still problems Need help please

88fivepointoh · 09-20-2002, 11:36 AM

ok i made a previous post for my original problem.. I changed my TFI module, pick up coil, and ignition coil.. the car won't go past 4000rpm.. it sounds like a serious rev limiter.. could my ECM be bad? It doesn't seem to me like its controling the timing correctly.. The car pulls hard till the tach hits about 4K then it just breaks up like a rev limiter.. i have no idea what is going on.. please help.. thanks!

09-20-2002, 12:58 PM

When is the last time you changed your fuel filter? I'd start with that. If the problem is still there then start the process of elimination with replacing the spark plugs, cap, rotor, plug wires....

Jthompson · 09-20-2002, 02:29 PM

you can spend a lot of money by replacing parts like that. A shop has a scope that you can hook it up to if you are not able to figure it out. Be careful by throwing parts at it, another guy on another board has sunk 1500 $ into parts into an 89 camaro and still has not found the problem yet

Skyman · 09-20-2002, 06:42 PM

I agree check the fuel filter, and make sure you have no shorts in your ignition. Also whats your timing at?

Skyler

88fivepointoh · 09-20-2002, 10:16 PM

my timing is at 12 degrees... I pulled the distributor out i lined up the crank to 0 degrees and put the distributor right on the #1 plug.. is that correct.. I also had my tfi checked and it tested bad.. so i put another one in and still the same issue.. i noticed that sometimes after i drive it for a little bit the rpm's that i can reach drop from 4000k to 3000k then i can'tr even reach 2500k without that rev limiter effect.. i also noticed like it runs, as if the timing spout is out when it is warm and if i pull the connector ot it makes no difference.. it is very strange.. i have a hunch that the ecm is bad and doesn't know what to do with timing.. any idea's? the tume up is in good shape.

88workcar · 09-21-2002, 07:57 AM

I don't remember if it was you, too weeks ago someone had this problem. I did too. For me, I changed the whole dist, I had the one from my old motor. It fixed my problem, hit 4000 bam poot pow chough, let off runs great, get back too 4000 same crap again.

09-20-2002, 12:58 PM	#2
Simi Stang Guest Posts: n/a	still problems When is the last time you changed your fuel filter? I'd start with that. If the problem is still there then start the process of elimination with replacing the spark plugs, cap, rotor, plug wires....

09-20-2002, 02:29 PM	#3
Jthompson Registered Member Join Date: Sep 2002 Location: Corona, Ca. Posts: 80	you can spend a lot of money by replacing parts like that. A shop has a scope that you can hook it up to if you are not able to figure it out. Be careful by throwing parts at it, another guy on another board has sunk 1500 $ into parts into an 89 camaro and still has not found the problem yet __________________ Jeremy 1986 Mustang GT Convertible 1972 2 door 302 Maverick 1994 POS head gasket clubbed broke down T-bird with $6000 left to pay off

09-20-2002, 06:42 PM	#4
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	I agree check the fuel filter, and make sure you have no shorts in your ignition. Also whats your timing at? Skyler __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

09-21-2002, 07:57 AM	#6
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I don't remember if it was you, too weeks ago someone had this problem. I did too. For me, I changed the whole dist, I had the one from my old motor. It fixed my problem, hit 4000 bam poot pow chough, let off runs great, get back too 4000 same crap again. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

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09-20-2002, 11:36 AM	#1
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	still problems Need help please ok i made a previous post for my original problem.. I changed my TFI module, pick up coil, and ignition coil.. the car won't go past 4000rpm.. it sounds like a serious rev limiter.. could my ECM be bad? It doesn't seem to me like its controling the timing correctly.. The car pulls hard till the tach hits about 4K then it just breaks up like a rev limiter.. i have no idea what is going on.. please help.. thanks!

09-20-2002, 10:16 PM	#5
88fivepointoh Registered Member Join Date: Aug 2002 Location: Rochester Posts: 553	my timing is at 12 degrees... I pulled the distributor out i lined up the crank to 0 degrees and put the distributor right on the #1 plug.. is that correct.. I also had my tfi checked and it tested bad.. so i put another one in and still the same issue.. i noticed that sometimes after i drive it for a little bit the rpm's that i can reach drop from 4000k to 3000k then i can'tr even reach 2500k without that rev limiter effect.. i also noticed like it runs, as if the timing spout is out when it is warm and if i pull the connector ot it makes no difference.. it is very strange.. i have a hunch that the ecm is bad and doesn't know what to do with timing.. any idea's? the tume up is in good shape.