CPS failure - Maybe?

[ToddL]

Below is the message I posted a couple of months ago. I decided to replace the timing belt and CPS since I couldn't find anything else that could be causing the problem. Once I pulled the timing covers off I could see that the water pump had been leaking onto the CPS. So, I'm hoping this is the problem. I'm waiting for the new water pump I ordered. Once I get it back together hopefully my problem will be solved. Do the symtems I described below sound like a CPS failure?

Thanks
Todd

I'm still having problems with my 93 ATX. I have problems starting it (I need to use starting fluid) and when it's running it won't idle and sounds like it's running on only a couple of cylinders. I found that if I can get it rolling I let it rev up around 4000-5000 RPM and something frees up and the car goes back to normal. If I let it idle for a minute or so it starts to run ruff again and if I turn it off I have trouble restarting it. Any ideas what the problem could be? The first couple of times this happened the problem went away, but now it won't start without the starting fluid. I checked the codes a couple of times and got different readings each time. I got the codes for the MAF multiple times so I tried replacing it but that wasn't the problem. I cleared the codes, ran the car, and rechecked them a couple of times and I seemed to get different codes each time. Here is what I got.
KOEO tests:
1st try (engine not at operating temp): 116, 636, - 158, 172, 176, 533, 542, 556
2nd try: 111 - 158
3rd try: 111 - 122, 157, 158, 542,
KOER test:
Note - I had to keep my foot on the gas to keep the car running during the test because it runs so poorly.
Only try: 116, 136, 129, 167, 225

Even though I didn't get any codes for cam or crank position sensors are these posibilities? It almost sounds like it's out of time.

Any help will be greatly appreciated.

Todd

 

[jthomas68]

There is 1 easy way to diagnose a bad CPS.When it won`t start,look at the tach.If the needle sits at 0,it`s the CPS.If is jumps to a few hundred rpm`s,it`s not the CPS.

 

[BeatDaSHO]

wow man. sounds like you got some problems. first off.....your cps has probably not failed you yet because you have not gotten a code yet. since your water pump is leaking, i would replace both the cps and water pump. now....for the rest of your problems...check your plug wells for oil. this can be a common problem for the SHO which can cause things to go hectic. but to answer your question......the cps will not fix your problem because this has nothing to do with it. check the plug wells for oil and tell me if you find it.

Greg

 

[ToddL]

There's no oil in any of the plug wells.