[SuperCricket]

This is likely a giant shot in the dark, but I thought I would try telling my problems here. I've posted at every other LS1 message board, including LS1tech.com which I was sure would help me out, but to no avail.

The LS1 was running great in the 94 Camaro, until randomly, one day these problems occured.

Symptoms:
- Car will barely start, most of the time afterfires and shoots flames out the exhaust, but wont start up. Sometimes it will not start after 10 minutes of trying, sometimes it will fire right up.

- Tachometer doesn't work (it used to). When you turn they key on, the tach will move up a milimeter from the bottom and sit the entire time.

- *FIXED* Speedometer thinks you are moving. When I let the clutch out after starting the engine, with the tranny in neutral, the speedo goes up to 10 mph. If you rev the engine, it goes up thinking you are moving.

Things we've tried/checked:
- Ground wires on each side of the dash, and by the drivers seat are all good
- Main engine ground strap good
- Smaller 2 grounds on each side of the engine bay are good
- Every fuse inside engine bay and inside cab are good
- Unplugged and plugged back in all transmission wiring connectors
- Unplugged and plugged back in the 3 front and rear ABS sensors
- Unplugged and plugged back in ABS module connector
- Installed new crank position sensor
- Installed new cam position sensor
- Gone through every connector in the entire harness of the car

On LS1tech and everywhere else I received lame responses like (you've got your speedo plugged into your tach!) I don't know anyone else who has transplanted an entire drivetrain into another car and used the stock wiring harness. Seems like most transplants end up with a Painless harness or something else.

At any rate, the blasted car is ready to run... if it would just run. Everything else on the car is ready to let it move and drive!

/Cries for help

[Ojustracing]

Well onto the tach. Think it about it this way. Out of the PCM there is a signal wire that goes directly too the tach. The PCM take's the signal from the Cam sensor and converts it to a signal that the tach can use and if the tach has power, the tach will work.

So with that said, if the PCM is seeing wrong info, is converting the info wrong, or is missing some info. The car will have problems. Like I said before If you can 100% say that the tach stopped working at the same time the car is having problems. Then we can narrow your problem down.

If I had you go out to a properly functioning car, find the wire coming out of the pcm that sends the signal to the tach and have you cut it right at the pcm. The tach will stop working, but the car will function normally. I hope this explain's for you. That why you need to get some form of scanner on the car to see what the computer readings are. I have not said this before because alot of people would go right out and find one and put one in. I have seen PCM's go bad. I had 2 chrysler mini van come in for bad pcm's(No start complaints) on one car it had 2 defective pcm and the other one had 1 defective. These PCM were right from chysler.

My question is does the check engine light turn on when the car is in the run position? You also say your switch panel is wired OK, What does this mean, Have you gone around the factory wiring to run cooling fans, fuel pump, and what else. Please let me know. John