Please help...very lost

Toeclicker · 11-20-2003, 06:32 PM

Ok, I just got a brand new aluminum radiator cause my stock on cracked...it took a week to get it and put it in and ever since my car has been shaking badly. When i start it up it shakes like crazy but once it warms up its not as bad. When im driving it shakes but only from 1000rpm to about 18000 rpm. I thought it might have been the clutch but there is no chatter or anything on the pedal. so i kind of dismissed that notion. i am going to take off the flywheel cover and see what its like in there but before i got started i wanted to post and see if anyone could help...anything would be greatly appreciated

BaLListic · 11-20-2003, 07:16 PM

so it started after the radiator install??? and also does it have an eletric fan or the regular stock fan???

Toeclicker · 11-20-2003, 07:39 PM

Yes, it was after the radiator amd whats weird is i didnt touch ANYTHING but the radiator. Its an electric fan i got from a limo

Pyromaniac79 · 11-21-2003, 10:26 AM

Sounds crazy but check you Harmonic balancer, mine went bad a month ago and now one of my buddies is also going bad.

Falcons Talon · 11-21-2003, 11:12 AM

I lost a blade off of my Black Magic and the car vibrated every time the fan turned on. Are all your fan blades intact?

Toeclicker · 11-21-2003, 06:12 PM

I already changed my harmonic balance about 3-4 months ago but i checked it anyway and it was fine...as for the fan idea...all the blades are connected at the ends. in my old car my rear main seal leaked and went all over my flywheel so my clutch was having a hard time catching. i had to take it all apart and i just hope i dont have to again. anyone, someone help me please?

BaLListic · 11-21-2003, 07:03 PM

you got me man sorry

84LX89GT · 11-21-2003, 07:09 PM

Could it be a misfire? You could try checking the spark plugs to make sure there's no coolant on them and that they're not fouled out. You could also try disconnecting and grounding individual spark plugs to isolate if there's a cylinder that's contributing less. Since it's not as bad when it warms up (air/fuel is easier to light when it's heated up) that's why it sounds like a misfire.
If you check the plugs you might as well do a compression test to make sure you didn't blow anything. How old are the plugs and wires?

Toeclicker · 11-21-2003, 09:05 PM

Great, now thats a start. I mean I hope thats not it but its defintely a start in a new direction. The plugs and wires are stock as far as i know. ive only had the car for about 10 months now. Wow seems a lot longer, but anyway. i got 2 days off in a row so that will be my project. THANKS!!! and ill keep ya updated

mustangII460 · 11-22-2003, 10:50 PM

Moisture in the distributor cap.

MidNiteBlu 5.0 · 11-23-2003, 12:01 AM

very well could be a misfire. I had a kind of shaking problem and i thought it was like a motor mount or balancer but it turned out to just be a misfire.

Coupe50h · 11-23-2003, 12:39 AM

It's easy to diagnose the difference in a balancer vibration, misfire, or driveline part?
hold the throttle kinda high about 3k plus while parked in neutral or parked, watch the tach, if it stumbles then you have a misfire, if the car shakes at a stop, it could be the balancer, if it vibrates while rolling not in gear, then it's a u-joint.

84LX89GT · 11-24-2003, 02:33 AM

Another thing i just noticed is that you have a 255 lph fuel pump. I don't know when you installed that, but after i installed mine i got a severe misfire at lower rpms, hard to keep running cold and when it warms up to operating temp it mostly goes away.
Anyway, after checking fuel pressure and seeing 85 psi no matter what the adjustable regulator is set at, i disconnected the return line and ran a hose into a bucket....fuel pressure dropped to 35 psi and the car ran fine. I reconnected it and disconnected it at the fuel pump and the pressure went back up to 85 psi, the return line was restricting flow and sending out my 30lb/hr injectors (30lb/hr flow at 85 psi....that's alot of fuel!) 255lph is too large for the return line size of 5/16 (i believe that's the size) so i now have to buy new AN fuel lines, fuel pickup and fuel rail to run the 255 lph pump.

11-20-2003, 06:32 PM	#1
Toeclicker Registered Member Join Date: Mar 2003 Location: florida Posts: 24	Please help...very lost Ok, I just got a brand new aluminum radiator cause my stock on cracked...it took a week to get it and put it in and ever since my car has been shaking badly. When i start it up it shakes like crazy but once it warms up its not as bad. When im driving it shakes but only from 1000rpm to about 18000 rpm. I thought it might have been the clutch but there is no chatter or anything on the pedal. so i kind of dismissed that notion. i am going to take off the flywheel cover and see what its like in there but before i got started i wanted to post and see if anyone could help...anything would be greatly appreciated __________________ 93 LX 5.0 swapped to 347 turbo

11-20-2003, 07:16 PM	#2
BaLListic Registered Member Join Date: Nov 2003 Location: Asheboro, NC Posts: 108	wasnt doing it before? so it started after the radiator install??? and also does it have an eletric fan or the regular stock fan???

11-20-2003, 07:39 PM	#3
Toeclicker Registered Member Join Date: Mar 2003 Location: florida Posts: 24	Yes, it was after the radiator amd whats weird is i didnt touch ANYTHING but the radiator. Its an electric fan i got from a limo __________________ 93 LX 5.0 swapped to 347 turbo

11-21-2003, 11:12 AM	#5
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	I lost a blade off of my Black Magic and the car vibrated every time the fan turned on. Are all your fan blades intact? __________________

11-21-2003, 06:12 PM	#6
Toeclicker Registered Member Join Date: Mar 2003 Location: florida Posts: 24	I already changed my harmonic balance about 3-4 months ago but i checked it anyway and it was fine...as for the fan idea...all the blades are connected at the ends. in my old car my rear main seal leaked and went all over my flywheel so my clutch was having a hard time catching. i had to take it all apart and i just hope i dont have to again. anyone, someone help me please? __________________ 93 LX 5.0 swapped to 347 turbo

11-21-2003, 10:26 AM	#4
Pyromaniac79 Registered Member Join Date: Oct 2003 Location: Enterprise, AL Posts: 26	Sounds crazy but check you Harmonic balancer, mine went bad a month ago and now one of my buddies is also going bad.

11-21-2003, 07:03 PM	#7
BaLListic Registered Member Join Date: Nov 2003 Location: Asheboro, NC Posts: 108	you got me man sorry

11-21-2003, 07:09 PM	#8
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Could it be a misfire? You could try checking the spark plugs to make sure there's no coolant on them and that they're not fouled out. You could also try disconnecting and grounding individual spark plugs to isolate if there's a cylinder that's contributing less. Since it's not as bad when it warms up (air/fuel is easier to light when it's heated up) that's why it sounds like a misfire. If you check the plugs you might as well do a compression test to make sure you didn't blow anything. How old are the plugs and wires? __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

11-21-2003, 09:05 PM	#9
Toeclicker Registered Member Join Date: Mar 2003 Location: florida Posts: 24	Great, now thats a start. I mean I hope thats not it but its defintely a start in a new direction. The plugs and wires are stock as far as i know. ive only had the car for about 10 months now. Wow seems a lot longer, but anyway. i got 2 days off in a row so that will be my project. THANKS!!! and ill keep ya updated __________________ 93 LX 5.0 swapped to 347 turbo

11-22-2003, 10:50 PM	#10
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Moisture in the distributor cap.

11-23-2003, 12:01 AM	#11
MidNiteBlu 5.0 I got something to say Join Date: Sep 2001 Location: San Diego, CA Posts: 1,557	very well could be a misfire. I had a kind of shaking problem and i thought it was like a motor mount or balancer but it turned out to just be a misfire. __________________ 91 LX Hatch 5.0 - made for the twisties 89 LX Hatchback 5.0 5spd. stolen/stripped 4/7/05 http://www.mustangworks.com/cgi-bin/...splay.cgi?3494 1987 Toyota Pickup Ricer Haters Club Member #33 Want a custom gauge cluster for your Vintage Mustang? www.jmeenterprises.com

11-23-2003, 12:39 AM	#12
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	It's easy to diagnose the difference in a balancer vibration, misfire, or driveline part? hold the throttle kinda high about 3k plus while parked in neutral or parked, watch the tach, if it stumbles then you have a misfire, if the car shakes at a stop, it could be the balancer, if it vibrates while rolling not in gear, then it's a u-joint. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

11-24-2003, 02:33 AM	#13
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Another thing i just noticed is that you have a 255 lph fuel pump. I don't know when you installed that, but after i installed mine i got a severe misfire at lower rpms, hard to keep running cold and when it warms up to operating temp it mostly goes away. Anyway, after checking fuel pressure and seeing 85 psi no matter what the adjustable regulator is set at, i disconnected the return line and ran a hose into a bucket....fuel pressure dropped to 35 psi and the car ran fine. I reconnected it and disconnected it at the fuel pump and the pressure went back up to 85 psi, the return line was restricting flow and sending out my 30lb/hr injectors (30lb/hr flow at 85 psi....that's alot of fuel!) 255lph is too large for the return line size of 5/16 (i believe that's the size) so i now have to buy new AN fuel lines, fuel pickup and fuel rail to run the 255 lph pump. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

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