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95 6bolt misfire/stumble

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Spanky_DSM

10+ Year Contributor
1,159
3
Sep 28, 2010
El Paso, Texas
1995 GST

ECM v2
14b or 16g turbo
Mishimoto fmic
Intake
560cc injectors
Exhaust leak, but at the downpipe.
Fuel pump unknown
Supposedly 6 bolt swap
Non 95/96 cas option used via Link

I bought the car not running but so far i have gotten it to idle by fixing the wiring for the O2 sensor ( i got it to cycle), Coolant tps wiring which now works, along with the maf not having a proper signal so i the signal wire to the ECU.

The cars stock boost gauge is based off of the Maf signal. Oddest thing is that sometimes when my alt belt screeches its pegged to the top and the car acts up so after a few light revs it goes back down and the car idles properly but still cant move under its own power.

I don't know if the Coil pack wiring is wrong because "its a 6 bolt", and the firing order is 4123 which is odd (wont start switched around). PIC INCLUDED

I also don't know if i'm running the proper CAS so i would love for you guys to verify for me.
PIC INCLUDED

Lastly, I have a idle log provided to let the ecm pros let me know if my maf reading are correct, ignition timing cycling properly along with other values. Sadly i don't have a timing light to verify ignition timing but please take a look regardless.
The idle log has the timing cable grounded till about 25 seconds so that is when i unground it.
This car is a wiring mess due to a horrible wire tuck.

I need this car for when i start school by the next 2 weeks, so any help is greatly appreciated.
 

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95 used a cam sensor behind the timing cover. That cas looks like a painted 2g cas from a 97. I use a black top round dome cas on my 6 bolt lower 7 bolt head. Firing order stays the same 4123. And the injector plugs don't need to be swapped around. Try using the cas signal invert feature in your link. That should fix you up
 
Thank you for the reply. I understand the difference between the 95 cas, but this being a 6 bolt, could the issue be that it's not a 1g cas instead of the 97plus cas? I also forgot to mention the cas is inverted thru link.
 
I highly recommend a basic check first compression,mechanical timing,fuel pressure, then I would start digging into the harness.
 
I highly recommend a basic check first compression,mechanical timing,fuel pressure, then I would start digging into the harness.

I haven't checked compression, but mechanical timing is good and I wouldn't suspect the fpr
be over ran especially at idle even with a 255wally which I doubt it has, and if you saw this wire mess I'm sure you'd start tracing wires. Regardless you are correct a compression test is the first place to check with any engine bought not running.

But may I add the car stumbles like its bi polar. I would suspect it to be continuous if it was low on compression.
 
...That cas looks like a painted 2g cas from a 97.
It's a 1990 CAS.

Thank you for the reply. I understand the difference between the 95 cas, but this being a 6 bolt, could the issue be that it's not a 1g cas instead of the 97plus cas? I also forgot to mention the cas is inverted thru link.
The only way it would be an issue using a 2Gb CAS is if you didn't also have a Kiggly crank sensor for that "6-bolt" engine of yours. As it is, you don't care about any of that because you have a 1G cam sensor.

I'm curious just what it is you are trying to show us with the picture you provided of your coil packs? We can't see what cylinders any of the spark plug cables (wires) are going. It's the spark plug cables that need to be swapped -- the plug wires -- not the wires going to the coil packs. Are you uncertain whether the wiring to the coil packs is correct? :confused:
 
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