bg552

I wrote this thread 4 months ago and this was the way the car was acting at the time:

"Been having this problem for the past 2 months now and havent been able to drive the car for fear of getting stranded. Most of the time, the car will start and run normally for 10 minutes or more. During this time, the car runs flawlessly (no miss, rough idle or anything). At some point after that, the engine will completely quit without any sort of warning. Sometimes it will start back up and run fine, then quit again the same way, or it wont start back up at all. Had it out the other day, it lost power, backfired, regained power and then stalled a minute later."

Now the car is sitting in the driveway and will not start whatsoever.

Where do i go next trying to track down this issue. I have already replaced:

- Opti distributor (cap and rotor looked fine and were not replaced)
- Spark Coil
- Ignition Control Module
- O2 Sensors

I have checked and verified that these properly work:

-MAP Sensor
-TPS Sensor


If i remember correctly there is no spark whatsoever at the coil.

Someone please give me some advice as to what to do next. I havent driven the poor car in months and because i recently had my ACL repaired, i cant drive my 6-speed WS6

bg552

This thread is regarding a 95' LT1 Camaro by the way, if you didnt catch it in my sig.

OBE1 95Z28

One possibility is an intermittent ignition switch; this could cause the engine to completely shut off.

bg552

Yeah but would it cause loss of power/backfiring?

1FstFormulaV8

I'm going through the exact same problem As soon as I find something I'll keep you posted or vice versa. Check out my thread, they are pretty much the same.

VintageMuscle

Make sure the #7 plug wire and the O2 sensor electrical lead are as far apart as possible. I've seen this create a lot of problems.

sbs

Sounds like you're having problems when it goes into closed loop. This is usually an O2 sensor problem.

Try unplugging the O2s and drive like that. If you don't have the problem then that confirms that it works in open loop and not in closed loop.

Is the PCM stock?

bg552

The PCM is not stock. It was sent a mail tuned PCM and sent my "core" back.