lt1 ignition issue
Thread Starter
Launching!
Joined: May 2004
Posts: 275
Likes: 0
From: miami
lt1 ignition issue car has brand new spark plugs, opti, plug wires and water pump have 12k miles. i get a stutter now and then and sometimes the car will shut down in traffic. im praying it isnt the opti and i dont think it is. any thoughts??? 
TECH Fanatic
Joined: Sep 2002
Posts: 1,112
Likes: 0
From: BLOOMFIELD, NY
i dont think it is your opti. If it was it would not be fine durring wot. I am thinking you have some sort of intake leak. Do you have access to a scanner or any sort.
When my o2s were bad the car would act up down low but run fine at wot. So that is also a possibility.
When my o2s were bad the car would act up down low but run fine at wot. So that is also a possibility.
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TECH Senior Member
Joined: Jun 2003
Posts: 9,339
Likes: 3
From: NYC metro area
Originally Posted by 96SCTA
i dont think it is your opti. If it was it would not be fine durring wot. I am thinking you have some sort of intake leak. Do you have access to a scanner or any sort.
When my o2s were bad the car would act up down low but run fine at wot. So that is also a possibility.
When my o2s were bad the car would act up down low but run fine at wot. So that is also a possibility.
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I had a leak in my elbow once and that was causing some stutter. What year is this car? If you have no cats and it has OBDII electronics then your rear sensors may be screwing you up.
Thread Starter
Launching!
Joined: May 2004
Posts: 275
Likes: 0
From: miami
Originally Posted by dhdenney
I had a leak in my elbow once and that was causing some stutter. What year is this car? If you have no cats and it has OBDII electronics then your rear sensors may be screwing you up.
I would pick up some O2 sims for the rear then. I've never fooled with OBD2 but if they make O2 sims for the rear sensors and not for the front (at least I've never seen them), then those rear ones must do something. 
Teching In
Joined: Apr 2004
Posts: 11
Likes: 0
From: Lancaster PA
hey i had a problem very similar to that in my 93. The ignition module was goin out and would cause the car to stall every once in a while. The shop couldnt diagnose it, cause it only threw a code when it decided to act up. The part is only like 80 bucks from the dealer....might be the problem?