Now I am pi$$ed. I have no idea what is wrong with this darn car. It was working just fine, I drove it home parked it now nothing !! The car will power up, and crank over but that is about it. The fuel pump is doing its job (priming) and fuel is all the way to the TBI unit so the fuel filter is not plugged. I had the module under the distributer cap checked at Autozone and it showed to be good. I am not getting any pulses to the injectors, and I am not getting any spark to the plugs. Yes there is gas in it too. (I did check that, lol) I tried 2 different coils, still nothing. I even bought a new computer, and nothing. I also checked the fuse on the fenderwell by the battery and it is good too. All the fuses under the dash are just fine. What in the world could I be missing ??? Do any of you have an idea of what I can check next ??
Thanks for any help in advance !!!
Stryker

I did a search also and read for close to two hours and couldn't come up with anything I haven't already tried.

 

Sounds like either your ESC module went bad or your something is wrong with your coil wire. Could also be a bad ground to the ignition. Are all the electronic plugs attached to the dist & coil???
maybe its time to replace your rotor? Those are all things that you didn't mention that would cause you to have a problem.

 

if you have no fuel and no sparl then your ignition is not getting a crank signal. replace the module and look at your grounds to make sur ethey are clean and in good contact

later
tim

 

If you don't mind explaining, what all grounds are you talking about ? The ones from the engine to the body ? The one from the battery to the body ? Or are there grounds on (in) the elictrical connectors ? The rotor is only about 6 months old and the coil wire shows to be good with my ohm meter. I am on my way right now to pick up a new module. Thanks and keep the replies comin please !!

Stryker..

 

Ok here are the things that I have replaced :
New plug wires and coil wire
New rotor (dist. cap looked good)
New coil
New computer (still has old prom chip)
New electronic spark control (ESC) module
Ignition module (under dist. cap) checked out ok on 2 different machines 3 times each.
Checked fuse on firewall by battery - its ok
All fuses under dash are ok
Fuel pumps up and pressurizes

Still no spark to plugs and injectors do not pulse. I have checked all of the grounds that I know of and even checked for ground on the distributor and the ignition module, all over the intake, block, exhaust manifolds (I know a little overkill, but hey) and all was well. Also, all of the electrical connections have been triple checked to the distributor, coil and modules. Ok now, anyone have any ideas ?? I am open to all suggestions !! Could it possibly be in any of the wiring ? What should I check first ?? Oh by the way, I just realized that I didn't say what kind of car I have (if it matters). I have a '91 Camaro RS with the 305 and 5-speed.
Thanks
Stryker

 

hows the pickup coil? A bad or weak pickup coil in the dist. will stop you cold in your tracks because of the lack of reference pulse to the ecm.

 

also, does the computer give the "12" no engine running code when teh key is int he on position and the A+B terms are jumpered? The SES light should flash once when the key is turned tot eh on position to let you know all is supposedly well witht the ecm itself.

 

I had a problem like that too. I replaced the pick up coil in the distributor and the car started on the first try. Before you remove the distributor from the car mark everything up so that installation will be easy. After I replaced mine the car started up on the first crank. The pickup coil is only 10-15 dollars. Good luck!

 

What about the VATS security key? The VATS system will sure leave you stranded if it takes a dump.

 

I will try the pickup coil tonight. As far as the VATS goes, it is disabled. And besides that, if the VATS was out, the car wouldn't even crank over, which it does. Thanks for all who replied, and I'll let you all know how it goes.

Stryker

 

i had the same thing on a friends 3rd gen... just to let you know, we replaced everything you did and the pick up coil, did not help! It turned out being the module you tested all those times, like you it tested good for us time and time again at three different stores, after about $150 dollars of parts that were un needed, it was the module anyways, tested good all day long... but it was bad.

 

With VATS problem, engine will crank just never start. I have been stuck a few times waiting out that 15 minutes for the VATS to reset to get my car to start. So I disabled the VATS. My 99 Trans Am will do the same thing if I turn the engine off and then try and restart it too quickly.

The ignition module can test good and still be bad. I carry a spare one of the blasted things since they are prone to just up and die on you.

 

Thats the 5th or 6th post I've read that someone has said the module was bad even tho they had it tested a dozen times. I would try that before I did the pickup coil. I didn't like the idea of tearing my distributer apart but it was much easier than I thought it woud be. Mark everything or youll end up with fire coming out of the tbi like i did

 

That's what happened to me. After it tested good, I banged my head on the f**king wall for three day trying to figure it out. You might wanna try what eventually clued me in. One night I had the ignition in the ON postition and started slowly wiggling the connections at the ignition module and the injectors would pulse once at a time so then I knew that it had to be the module.

Tom

 

OK, I went to Autozone to get a new ignition module and now a new problem. There are two to choose from. I took in my old ignition module, and they couldn't even cross reference the #'s that were on there. So, now I ask, is there any difference that anyone knows of for ignition modules in a '91 RS with a 305 TBI ?? Which one should I get ? Thanks,
Stryker

 

Ding Ding Ding Ding, we have a winner !! It WAS the darned ignition module ! Boy, if I would have only known that about $200 ago. I suppose the good thing is, I know (hope) that no sensors or the computer will be going out any time soon. And to think, I was just gettin ready to buy a new distributer too. (lol) Thanks a million to all who have helped me out with this !!

Stryker

 

I'm glad that you found the problem. Kinda pisses you off though huh? I know that I was pretty ticked