misfiring out of ideas please help
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Joined: Sep 2000
Posts: 256
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From: indiana
misfiring out of ideas please help
ok im at my ropes end idleing and causal driving it doesnt seem to mis a lick but when i step in to it around 4000 its starts misfiring real bad ive replaced wires ,plugs, cap,rotor unhooked msd and msd coil and hooked up my stock ignition and coil and it still does it so i know its not them i replaced cap a week ago checked it today and it had a little grove between the terminals where it has been misfiring so i put another cap and rotor on it but it still mifiring when i get on it could it be my distibuter?computer? whats ? i have never been so baffeled please help later
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1992 camaro RS w/ 350tpi
195cc AFR heads with compition port work milled to 58cc
1 3/4 hooker long tube headers
4" mufflex system
custom ED Wright chip
eddelbroc intake base and runners and much more
new best ET 13.5 @104.66 on stock heads
no times with new afr heads hoping for 12's on motor
http://www.nav.to/badass355tpi
------------------
1992 camaro RS w/ 350tpi
195cc AFR heads with compition port work milled to 58cc
1 3/4 hooker long tube headers
4" mufflex system
custom ED Wright chip
eddelbroc intake base and runners and much more
new best ET 13.5 @104.66 on stock heads
no times with new afr heads hoping for 12's on motor
http://www.nav.to/badass355tpi
Member
Joined: Dec 1999
Posts: 176
Likes: 0
From: What?!? Am I still here?
Car: Mullitt mobile :)
Engine: it's stock LOL
Transmission: 700rJunk
Axle/Gears: 2 much 4 street not enough for strip
Have you replaced the ignition module?
Does your car have a remote coil? If so, check the wire from the coil to the cap.
Have had both of the above happen to me. The coil wire looked perfect from the outside, but after swapping it, looked in the boot and the clip that fastens on to the terminal had just about burnt in half. Caused exactly you described, but only at 4500 RPM and above.
Sparks a flyin'
Does your car have a remote coil? If so, check the wire from the coil to the cap.
Have had both of the above happen to me. The coil wire looked perfect from the outside, but after swapping it, looked in the boot and the clip that fastens on to the terminal had just about burnt in half. Caused exactly you described, but only at 4500 RPM and above.
Sparks a flyin'
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iTrader: (2)
Joined: Feb 2001
Posts: 938
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From: Hinesville, GA USA
Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
Does it do it when it's cold? Sometimes a plug wire will 'heatsoak' from the manifolds, not misfiring while it's not under load because of the lower amount of spark necessary. As soon as you step on it...
If so, change the wire if possible, then relocate the wire.
If so, change the wire if possible, then relocate the wire.
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
If you suspect the ignitoin take a look at the
pickup coil, ignition module and reluctor.
Reluctor can usually be seen cracked, the pucoil will have a greenish crud in it, check the resistance as well, should be right on at 800 (=/-25)ohms, when wiggling the wires, also look in the connector to the module for greenish crud.
If you're not really sure of the ignition, may want to change the fuel filter, as well as monitor fuel pressure too.
pickup coil, ignition module and reluctor.
Reluctor can usually be seen cracked, the pucoil will have a greenish crud in it, check the resistance as well, should be right on at 800 (=/-25)ohms, when wiggling the wires, also look in the connector to the module for greenish crud.
If you're not really sure of the ignition, may want to change the fuel filter, as well as monitor fuel pressure too.
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