Pulling codes - Please help!!!!!! - Page 2

Smokedawg · 05-31-2001, 03:07 PM

Man, it sounds like more than a few of us stangers in Indiana are having problmes..Must be the air.

------------------
347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del

2FastLX · 06-01-2001, 01:29 AM

Well, I didn't get anything done to the car yet because I was too busy at work tonight. I will hopefully know something by this weekend. I'll be up Saturday morning Mark.

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

withamc · 06-01-2001, 01:37 AM

2FastLX - Check the harnesses going to your O2 sensors. When I put in my first set of headers one of the harnesses got pushed up against the header and shorted. The computer threw out a code (don't remember which) that indicated "always reads lean" on the KOER test and ran really rich till I found the burned cable and fixed it. DON'T SELL THE CAR!

Casper5.0 · 06-01-2001, 03:09 AM

you might wanna try an ect sensor, my car wouldn't idle below 1200 rpm and would spit raw fuel out the dumps at idle, and would run real rich at idle as well. mine also seemed like it was overheating the whole time. once i changed that sensor it ran perfect. good luck!! and don't give up, i was on the verge of selling mine as well......

------------------
94 cobra, steeda tri-ax, ultra flo's

14.2 @ 99 (stock)

Rick 91GT · 06-01-2001, 08:09 AM

Damn one day I check and you are looking for info on codes the next time I check it's I'm going to sell this thing...

Don't worry Kev it's most likely something simple and you'll find it. I have a damn oil leak and my 3K mile King Cobra clutch is slipping. So either the rear seal blew and got oil all over the clutch or the rear of the pan is leaking, I was too pissed to play with it yesterday, guess I'm not heading to the track tonight for my first runs

.

------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

2FastLX · 06-01-2001, 10:54 AM

I was pretty pi$$ed that day Rick

Anyway, the car came out of it somewhat and is back to the way it was just before the O2 install. It still runs like crap, but at least it's drivable.

The car has tons of power when you get on it and it doesn't hesitate a bit.

What is the ECT sensor and where is it located? Is there any way to test it? Also, how much do they run?

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

2FastLX · 06-03-2001, 09:48 PM

All right. Now I'm really pi$$ed!

We checked everything we could think of over the last 2 days and we found a problem that is yet to be explained. My vacuum is only running 5 inches at idle

We checked the compression and it was between 140 to 150lbs. So we thought maybe it was because the rockers aren't letting the valves close all the way so we tested the compression with the car idling and it was fine. When you give it gas the compression drops to around 90lbs then goes back up at idle. Is that normal??

Any other suggestions on how to diagnose a low vacuum problem?

Thanks for all the help guys!!

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

Rick 91GT · 06-03-2001, 11:28 PM

Kev buddy something is F****D UP, 5" of hg at idle aint **** , is your brake pedal stiff? My old cam only pulled 9" and my pedal was stiff and I had to hit the brakes to make the brake booster work. That cam should pull atleast 15", you have a leak or something somewhere. Let me sleep on it and think...

------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

jimberg · 06-04-2001, 12:45 AM

Where are you testing for vacuum?

Beavisgod7 · 06-04-2001, 02:25 AM

Sell It. Some vacuum line or hose is obviously disconnected, or cam timing is WAAY out.

2FastLX · 06-04-2001, 09:34 AM

We checked everywhere for a vacuum line not connected and couldn't find a thing wrong. If there was a leak leaking that much vacuum you'd think you'd be able to hear it pretty good because you can hear the 5 inches it's pulling when you remove a vac line. We checked the vacuum in a few different places I believe ( I was operating the clutch pedal and key

).

We also tried spraying carb cleaner around the intake to check for leaks and it was fine.

Cam timing is on the money. I installed the timing gears myself and know they were lined up. The car wouldn't run as good as it does at WOT if it wasn't. The car runs great once it gets up in the RPM's, and just sputters in the lower end. If the cam timing is off it can't be more than a tooth which wouldn't cause this much of a vac problem anyway. But I know it's not off even a tooth.

Would it help to start plgging off every vacuum line I can until I find the one that is causing the problems? I still have to try pinching off the vac hose to the booster to see if that fixes the problem. I will do that tonight at work.

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

2FastLX · 06-04-2001, 09:38 AM

I just remembered something...
My cruise control doesn't work and I was told a long time ago (when the car was stock) that it could be a vacuum line off in the fender. I'll have to pull that fender tonight and see what I can find. Is this very hard to do?

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

jimberg · 06-04-2001, 10:01 AM

Kevin, I think it would be a good idea to start plugging up every vacuum port one by one until vacuum is normal. That should give you a good idea of which one it is. Start with the big lines since it seems like it would be a pretty big leak.

Also, get another vacuum tester and make sure that yours is accurate or use the one you have on a friend's Mustang to see if it registers what you would expect.

------------------
351W 89 Mustang GT Convertible

2FastLX · 06-05-2001, 03:52 AM

Well, I've narrowed it down to absolutely no idea whatsoever. It has to be internal because with only one vac line left open it still has no vacuum at idle. Could it maybe be my exhaust has no back pressure? I'm lost.

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

WADS56 · 06-05-2001, 04:09 AM

Not sure if you thought of or checked this stuff but I will mention it any way. I know you checked the upper to lower gasket for a leak, but what about the lower intake gaskets. It happened to me before, it was drawing air from the lifter valley because of a bad gasket. You would think if that were the case your plugs readings would not be the same but they were.

I'm not trying to insult you by saying this one, but there is a huge vacum port on the bottom of the upper intake for the PVC. the hose may of sliped off during the installation.

5' of vacum is way to low it has to be getting air from someware.

------------------
347 W/ A-trim 6#'s, Canfield heads, out of the box Systemax II intake, solid roller cam. 11.1 @123mph 1.46 60FT

93lx 5.0 daily driver
MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

Rick 91GT · 06-05-2001, 07:17 AM

Kevin- I was looking through some old Automotive adn Chilton manuals last night. If your vacuum is staying consistantly low at 5 and does not vary it points to the intake leaking, there are so many things that effect vacuum like bad rings, valve seals, valve timing, cam timing, leaky head gasket, manifold etc.... but if the intake is leaking vacuum will be consitantly 9-10 points low. I alwyas pull vacuum off the empty port on the vacuum tree, how does your brake pedal feel when it is sitting at idle? WIth only 5" it should be stiff because my old cam only pulled 9-10" of hg at idle and that is not enough to operate the power brakes.

------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

2FastLX · 06-05-2001, 10:29 AM

We sprayed the carb cleaner all around the upper and lower intake. If it was sucking any air in there it would have shown up I would think.

And yeah, my brake booster quits completely at idle.

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

2FastLX · 06-12-2001, 01:54 PM

I just wanted to revive this topic to let you guys know I think we have it narrowed down to the valve lash. We checked the compression while it was running, but only did this on one cylinder. I was talking to my boss yesterday who used to be the head guy on an Indy car pit crew and he told me to check the valve lash. He said if only a couple valves were staying open it would cause vacuum problems. This has been one of my concerns ever since we got the car back together because we really kinda guessed at setting the rockers so I'm betting this is the problem. I will update this as soon as I know for sure.

Thanks for all the help guys!!!!!!!!!!!!!!!!

------------------
Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph

Indiana Stangers Association
Buy your parts here
ICQ# 42269241

QUIN · 06-12-2001, 02:40 PM

damn, i was about to offer you $1000 for it too.

oh well.

just kidding!
keep us informed.
Q

------------------
Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims

See my engine on user rides.

I see your shwartz is as big as mine, now lets see how well you handle it!

andy669 · 06-12-2001, 06:22 PM

What do you mean, "you guessed" on setting lifter preload? They should be 1/4 to 1/2 turn from zero lash. In other words, tighten the rockers up just until you cant turn the pushrods, then go another 1/4 to 1/2 turn.

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05-31-2001, 03:07 PM	#21
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	Man, it sounds like more than a few of us stangers in Indiana are having problmes..Must be the air. ------------------ 347 Stroker Motor: Balanced, A9P Computer, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley Fuel Regulator, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 79mm Mass Air Unit, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Short Throw Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del

06-01-2001, 01:29 AM	#22
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	Well, I didn't get anything done to the car yet because I was too busy at work tonight. I will hopefully know something by this weekend. I'll be up Saturday morning Mark. ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-01-2001, 01:37 AM	#23
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	2FastLX - Check the harnesses going to your O2 sensors. When I put in my first set of headers one of the harnesses got pushed up against the header and shorted. The computer threw out a code (don't remember which) that indicated "always reads lean" on the KOER test and ran really rich till I found the burned cable and fixed it. DON'T SELL THE CAR!

06-01-2001, 03:09 AM	#24
Casper5.0 Registered Member Join Date: Jun 2000 Location: Stillwater, OK Posts: 107	you might wanna try an ect sensor, my car wouldn't idle below 1200 rpm and would spit raw fuel out the dumps at idle, and would run real rich at idle as well. mine also seemed like it was overheating the whole time. once i changed that sensor it ran perfect. good luck!! and don't give up, i was on the verge of selling mine as well...... ------------------ 94 cobra, steeda tri-ax, ultra flo's 14.2 @ 99 (stock)

06-01-2001, 08:09 AM	#25
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Damn one day I check and you are looking for info on codes the next time I check it's I'm going to sell this thing... Don't worry Kev it's most likely something simple and you'll find it. I have a damn oil leak and my 3K mile King Cobra clutch is slipping. So either the rear seal blew and got oil all over the clutch or the rear of the pan is leaking, I was too pissed to play with it yesterday, guess I'm not heading to the track tonight for my first runs . ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

06-01-2001, 10:54 AM	#26
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	I was pretty pi$$ed that day Rick Anyway, the car came out of it somewhat and is back to the way it was just before the O2 install. It still runs like crap, but at least it's drivable. The car has tons of power when you get on it and it doesn't hesitate a bit. What is the ECT sensor and where is it located? Is there any way to test it? Also, how much do they run? ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-03-2001, 09:48 PM	#27
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	All right. Now I'm really pi$$ed! We checked everything we could think of over the last 2 days and we found a problem that is yet to be explained. My vacuum is only running 5 inches at idle We checked the compression and it was between 140 to 150lbs. So we thought maybe it was because the rockers aren't letting the valves close all the way so we tested the compression with the car idling and it was fine. When you give it gas the compression drops to around 90lbs then goes back up at idle. Is that normal?? Any other suggestions on how to diagnose a low vacuum problem? Thanks for all the help guys!! ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-03-2001, 11:28 PM	#28
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Kev buddy something is F**D UP, 5" of hg at idle aint ** , is your brake pedal stiff? My old cam only pulled 9" and my pedal was stiff and I had to hit the brakes to make the brake booster work. That cam should pull atleast 15", you have a leak or something somewhere. Let me sleep on it and think... ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

06-04-2001, 12:45 AM	#29
jimberg Registered Member Join Date: Oct 1998 Location: Rogers, MN Posts: 2,089	Where are you testing for vacuum?

06-04-2001, 02:25 AM	#30
Beavisgod7 Registered Member Join Date: Jun 2001 Location: Riverdale IL Posts: 3	Sell It. Some vacuum line or hose is obviously disconnected, or cam timing is WAAY out.

06-04-2001, 09:34 AM	#31
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	We checked everywhere for a vacuum line not connected and couldn't find a thing wrong. If there was a leak leaking that much vacuum you'd think you'd be able to hear it pretty good because you can hear the 5 inches it's pulling when you remove a vac line. We checked the vacuum in a few different places I believe ( I was operating the clutch pedal and key ). We also tried spraying carb cleaner around the intake to check for leaks and it was fine. Cam timing is on the money. I installed the timing gears myself and know they were lined up. The car wouldn't run as good as it does at WOT if it wasn't. The car runs great once it gets up in the RPM's, and just sputters in the lower end. If the cam timing is off it can't be more than a tooth which wouldn't cause this much of a vac problem anyway. But I know it's not off even a tooth. Would it help to start plgging off every vacuum line I can until I find the one that is causing the problems? I still have to try pinching off the vac hose to the booster to see if that fixes the problem. I will do that tonight at work. ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-04-2001, 09:38 AM	#32
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	I just remembered something... My cruise control doesn't work and I was told a long time ago (when the car was stock) that it could be a vacuum line off in the fender. I'll have to pull that fender tonight and see what I can find. Is this very hard to do? ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-04-2001, 10:01 AM	#33
jimberg Registered Member Join Date: Oct 1998 Location: Rogers, MN Posts: 2,089	Kevin, I think it would be a good idea to start plugging up every vacuum port one by one until vacuum is normal. That should give you a good idea of which one it is. Start with the big lines since it seems like it would be a pretty big leak. Also, get another vacuum tester and make sure that yours is accurate or use the one you have on a friend's Mustang to see if it registers what you would expect. ------------------ 351W 89 Mustang GT Convertible

06-05-2001, 03:52 AM	#34
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	Well, I've narrowed it down to absolutely no idea whatsoever. It has to be internal because with only one vac line left open it still has no vacuum at idle. Could it maybe be my exhaust has no back pressure? I'm lost. ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-05-2001, 04:09 AM	#35
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	Not sure if you thought of or checked this stuff but I will mention it any way. I know you checked the upper to lower gasket for a leak, but what about the lower intake gaskets. It happened to me before, it was drawing air from the lifter valley because of a bad gasket. You would think if that were the case your plugs readings would not be the same but they were. I'm not trying to insult you by saying this one, but there is a huge vacum port on the bottom of the upper intake for the PVC. the hose may of sliped off during the installation. 5' of vacum is way to low it has to be getting air from someware. ------------------ 347 W/ A-trim 6#'s, Canfield heads, out of the box Systemax II intake, solid roller cam. 11.1 @123mph 1.46 60FT 93lx 5.0 daily driver MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288

06-05-2001, 07:17 AM	#36
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Kevin- I was looking through some old Automotive adn Chilton manuals last night. If your vacuum is staying consistantly low at 5 and does not vary it points to the intake leaking, there are so many things that effect vacuum like bad rings, valve seals, valve timing, cam timing, leaky head gasket, manifold etc.... but if the intake is leaking vacuum will be consitantly 9-10 points low. I alwyas pull vacuum off the empty port on the vacuum tree, how does your brake pedal feel when it is sitting at idle? WIth only 5" it should be stiff because my old cam only pulled 9-10" of hg at idle and that is not enough to operate the power brakes. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

06-05-2001, 10:29 AM	#37
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	We sprayed the carb cleaner all around the upper and lower intake. If it was sucking any air in there it would have shown up I would think. And yeah, my brake booster quits completely at idle. ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-12-2001, 01:54 PM	#38
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	I just wanted to revive this topic to let you guys know I think we have it narrowed down to the valve lash. We checked the compression while it was running, but only did this on one cylinder. I was talking to my boss yesterday who used to be the head guy on an Indy car pit crew and he told me to check the valve lash. He said if only a couple valves were staying open it would cause vacuum problems. This has been one of my concerns ever since we got the car back together because we really kinda guessed at setting the rockers so I'm betting this is the problem. I will update this as soon as I know for sure. Thanks for all the help guys!!!!!!!!!!!!!!!! ------------------ Too much to list. Best ET on the car so far with stock 2.73 gears - 13.73@102mph Indiana Stangers Association Buy your parts here ICQ# 42269241

06-12-2001, 02:40 PM	#39
QUIN Registered Member Join Date: May 1999 Location: Chillicothe, OH. Posts: 1,289	damn, i was about to offer you $1000 for it too. oh well. just kidding! keep us informed. Q ------------------ Quin, 87 GT,306,forged/cut pistons,edelbrock head\intake,steeda#18cam,1.7rr,MSD Blaster tfi coil,A9L,pro-m75mm,24#inj,accufab65mm,2.5"pipes,hooker headers,dynomax exhaust,3.73 gr,110 lph fp,moroso cold air,ASP pullies, weld rims See my engine on user rides. I see your shwartz is as big as mine, now lets see how well you handle it!

06-12-2001, 06:22 PM	#40
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	What do you mean, "you guessed" on setting lifter preload? They should be 1/4 to 1/2 turn from zero lash. In other words, tighten the rockers up just until you cant turn the pushrods, then go another 1/4 to 1/2 turn.