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Update:
The air hose going from the bottom of the idle control valve to downstream the throttle is cracked. Not sure if it happend when I removed it or it was like that, but need to replace that in any case. different diameter at each end, any idea of what to use to replace, or does it need to be OEM part?
Also: I can see the bolt that holds the CPS in place. What the $*&#@ do you use to get in there? Long socket?
OK, I found this elsewhere on the board:
I had occasional hard starting, and eliminated virtrualy everything else step by step. Finally I replaced the CPS - the engine was transformed. They do get old, and so does the wiring leading to it. If it is getting on a bit (mine was 10 years and 300,000 miles old) replace it - they don't cost much.
Spray WD40 etc over the bolts and leave for several days.
Loosen the bolt. It is hard to get at - you need a small socket set with a flexible drive.
Try waggling the sensor. You can tell before you have got the bolt out whether the sensor is going to be seized in. If it won't budge, maybe think again. If it comes free - mine was loose- take it out.
For easier access you could drop the gearbox mounting cross member, but I managed it with nimble fingers.
Don't believe people who say they either work or not. They get old, tired and erratic, mostly in cold starting or sometimes when very hot.
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1991 white 240 auto
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