99' Base 5 speed Cranks / No start / No codes / New CPS

[Fiddlebog]

Originally Posted by GLImages

I went through something similar. It ended up being a bad idle control valve. The unit on the side of the throttle body. I played with the parts shotgun and replaced just about anything fuel spark related chasing a start, but no crank issue. (Cps, maf, plugs, fuel pump, fuel reg, 02 sens, etc). Finally just happened to hear a slight buzzing from the the throttle body when checking fuel pressure for the 10th time, gave the ICV a couple taps, buzzing stopped, car cranked and ran like normal. Like nothing had been wrong. I put a bosch unit in, no issues since. I had never heard or read of one failing, so I looked over it multiple times. Just throwing that out there.

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Funny you should say that. Same exact thing happened to me. I actually took the whole unit apart and used some QD cleaner on it.
But when I was having the issue, I would still get some sputtering, and sometimes it would start but run really rough. Had a few other weird symptoms before that as well. All cleared up with a good clean though!

[GLImages]

Originally Posted by Fiddlebog

Funny you should say that. Same exact thing happened to me. I actually took the whole unit apart and used some QD cleaner on it.

But when I was having the issue, I would still get some sputtering, and sometimes it would start but run really rough. Had a few other weird symptoms before that as well. All cleared up with a good clean though!

Mine started with sputtering. Then just finally quit starting all together after a couple weeks of chasing my tail. What was throwing me off in my situation was the fuel pressure at the rail with car not running but key on was zero. New pump, regulator, cps, and still zero at the rail. Thankfully, I stumbled on the icv making noise. I swapped in a new one and had the normal 3.8 bar at the rail. I didn't think the ICV was THAT involved in fuel control. Its a simple 2 wire plug, so not sure what the ecu 'sees' from it. So to double check, I swapped the old ICV in and sure enough zero pressure at the rail again.



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