HELP...Major Problems with new combo!!!

SaleenGTS · 02-25-2001, 01:18 AM

Ok, I just got back from Dallas(600 mile trip to break in heads and cam)

Well, my car just started running like crap. It will be running fine, and then just start missing out of nowhere.

The funny thing is, that if I keep the car moving in gear, let off the gas, and turn the key off, and back on again real quick, it clears up. And then it will start doing it again.

I tried un-plugging the battery, then the computer to reset everything, and after I did that I started it up, and it immediately felt like it lost 40-50 hp...it won't spin at all in 2nd.

I also developed a mysterious ticking/crackleing sound on my passengers side inside the motor somewhere, it is very eratic, not in sync with rpm. It is not an exhaust leak, I think it is a clogged lifter, or something.

Guys PLEASE help, I am desperate. Thank you

------------------
Dustin
1993 Cobra #1926

Bassani Full lengths,Bassani short X-pipe, American thunder Cat back, 3.55's. More to come...

90dpscoupe · 02-25-2001, 01:27 AM

Mustangs have been known to have he TFI modules go bad on long trips, but usually in hot weather? mine did this a year ago but cleared up on it's own.

Now the other problem i dont know what that would be? hope you find the problem.

BowTie Eater 5 Liter · 02-25-2001, 01:28 AM

I Would Think You Blew A Head Gasket
Whats Your Timing At?

------------------
1988 Mustang GT, T-5
No Smog Pump (Shorty Belt), Dumps At The End Of Stock H-Pipe (Sounds Mean), K&N Air Filter (Stock Air Box, Removed air silendcer), 198.9 rwhp @4200 (235 Motor!!), 285 lbs-ft @2900 (336 Motor!!!).
My Stang This Is What Dynomax Ultra-Flo's Do (Soon To Be On My Stang!)
Future Plans Call For A 351 Windsor

Unit 5302 · 02-25-2001, 02:09 AM

Sounds like your computer is screwed to me. That's just based on an example of the exact same thing that happened on an old 88LX 4 banger I had. Same exact thing. A mechanic I know wacked it with a screwdriver. Damn thing ran perfect. I felt like an idiot. Oh well, that cleared up a problem that I had for months. Incidentally the engine blew up the next day. Tell me that's not ironic?

Anyway, sounds like it's the computer, or another emissions sensor. Otherwise the problem wouldn't go away when the car was shut off and refired rolling down the road.

Still, you said you cleared the computer, let the engine cool off, started it and it lost a bunch of power?

Here are my best guesses.

Computer
MAF Sensor
TFI Module
Fuel Pump

Those are just some ideas that I have.

I hate those kinds of problems.

Good Luck!

90dpscoupe · 02-25-2001, 03:05 AM

I suggest a code scanner, just my .2

lol, like unit says, i hate those kind of problems.

bcinyuz · 02-25-2001, 05:56 AM

To tell you the truth, someting like that has to be one of three things. First of all check all your electrical connections you know(batt,spark plug wires,throttle possition sensor,injector wires), stuff like that. Second try searching for a vaccum leak near the upper intake assuming you havent all ready. The third thing I could tell you is to check the fuel system (the pump,filter,lines both steel and rubber,regulator) and so on. I hope these things will help solve your problem, good luck.

[This message has been edited by bcinyuz (edited 02-25-2001).]

dinomite · 02-25-2001, 10:04 AM

I would agree that it must be computer/sensors. If it goes away when you simply cycle the power, then it sounds a lot like computer. Thats a trick I use when I don't want to stare at that check engine lite, just turn it off and on real quick.

Skyman · 02-25-2001, 10:24 PM

AHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!

I seriously hope I've got it here. I knew this sounded so familar. ITS IDENTICAL to what happened when I had a plug wire too close to a header and it melted the insulation. AT higher rpm it would jump through the wire to the header and short out, creating this exactly situation.

This might not be it, but check all that stuff out asap!

Skyler

------------------
-1989 Saleen Mustang #406-TFS Heads, E-303 Cam, Edelbrock Intake, and more.
-Videos (MPEG)-
0-110MPH In car view (963k)
All Throttle through 3 gears! (497k)
Tire Smoking Burnout! (218k)

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02-25-2001, 01:18 AM	#1
SaleenGTS RICE taste like Chicken Join Date: Jun 2000 Location: Edmond, OK Posts: 687	HELP...Major Problems with new combo!!! Ok, I just got back from Dallas(600 mile trip to break in heads and cam) Well, my car just started running like crap. It will be running fine, and then just start missing out of nowhere. The funny thing is, that if I keep the car moving in gear, let off the gas, and turn the key off, and back on again real quick, it clears up. And then it will start doing it again. I tried un-plugging the battery, then the computer to reset everything, and after I did that I started it up, and it immediately felt like it lost 40-50 hp...it won't spin at all in 2nd. I also developed a mysterious ticking/crackleing sound on my passengers side inside the motor somewhere, it is very eratic, not in sync with rpm. It is not an exhaust leak, I think it is a clogged lifter, or something. Guys PLEASE help, I am desperate. Thank you ------------------ Dustin 1993 Cobra #1926 Bassani Full lengths,Bassani short X-pipe, American thunder Cat back, 3.55's. More to come...

02-25-2001, 01:27 AM	#2
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	Mustangs have been known to have he TFI modules go bad on long trips, but usually in hot weather? mine did this a year ago but cleared up on it's own. Now the other problem i dont know what that would be? hope you find the problem.

02-25-2001, 01:28 AM	#3
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	I Would Think You Blew A Head Gasket Whats Your Timing At? ------------------ 1988 Mustang GT, T-5 No Smog Pump (Shorty Belt), Dumps At The End Of Stock H-Pipe (Sounds Mean), K&N Air Filter (Stock Air Box, Removed air silendcer), 198.9 rwhp @4200 (235 Motor!!), 285 lbs-ft @2900 (336 Motor!!!). My Stang This Is What Dynomax Ultra-Flo's Do (Soon To Be On My Stang!) Future Plans Call For A 351 Windsor

02-25-2001, 02:09 AM	#4
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Sounds like your computer is screwed to me. That's just based on an example of the exact same thing that happened on an old 88LX 4 banger I had. Same exact thing. A mechanic I know wacked it with a screwdriver. Damn thing ran perfect. I felt like an idiot. Oh well, that cleared up a problem that I had for months. Incidentally the engine blew up the next day. Tell me that's not ironic? Anyway, sounds like it's the computer, or another emissions sensor. Otherwise the problem wouldn't go away when the car was shut off and refired rolling down the road. Still, you said you cleared the computer, let the engine cool off, started it and it lost a bunch of power? Here are my best guesses. Computer MAF Sensor TFI Module Fuel Pump Those are just some ideas that I have. I hate those kinds of problems. Good Luck!

02-25-2001, 03:05 AM	#5
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	I suggest a code scanner, just my .2 lol, like unit says, i hate those kind of problems.

02-25-2001, 05:56 AM	#6
bcinyuz Registered Member Join Date: Aug 2000 Location: lodi,ca,usa Posts: 86	To tell you the truth, someting like that has to be one of three things. First of all check all your electrical connections you know(batt,spark plug wires,throttle possition sensor,injector wires), stuff like that. Second try searching for a vaccum leak near the upper intake assuming you havent all ready. The third thing I could tell you is to check the fuel system (the pump,filter,lines both steel and rubber,regulator) and so on. I hope these things will help solve your problem, good luck. [This message has been edited by bcinyuz (edited 02-25-2001).]

02-25-2001, 10:04 AM	#7
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	I would agree that it must be computer/sensors. If it goes away when you simply cycle the power, then it sounds a lot like computer. Thats a trick I use when I don't want to stare at that check engine lite, just turn it off and on real quick.

02-25-2001, 10:24 PM	#8
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	AHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!! I seriously hope I've got it here. I knew this sounded so familar. ITS IDENTICAL to what happened when I had a plug wire too close to a header and it melted the insulation. AT higher rpm it would jump through the wire to the header and short out, creating this exactly situation. This might not be it, but check all that stuff out asap! Skyler ------------------ -1989 Saleen Mustang #406-TFS Heads, E-303 Cam, Edelbrock Intake, and more. -Videos (MPEG)- 0-110MPH In car view (963k) All Throttle through 3 gears! (497k) Tire Smoking Burnout! (218k)