when i replaced tb water pump etc my battery was disconnected for a few days. when i reconnected and cleared all codes including an srs seatbelt sensor code that had been plaguing me for 2 years it went out! finally! thank god iwas so tired of seeing that red light. and it has stayed off.

Not sure ...

took iac off, noticed some slight green of what appeared to be minor corrosion unless Volvo uses a green grease. cleaned this off and then cleaned inside iac valve - did have some gunk but seemed difficult to fully clean. Also cleaned its connector. Ohms at prongs 1 and 3 were 23.2 (inside 18-28 ...

Yep, I think the idle control valve is next. the throttle body got doused pretty clean as did the intake when I took the intake off during the oil trap replacement. I did not do the icv at that time. should have but since the other stuff took a while to do I wanted to just wrap it up.

Thanks I'll ...

changed fuel filter - no major difference.

Noticing that when started cold, idle is smooth then once warmed up fairly shortly thereafter the idle quality becomes intermitent. Goes to 850 stays there then occasionally down to 500 and goes back up.

Just did back to back techron then seafoam hope ...

I believe the code you are referring to is probably 1 2 2 at B2 (cruise) that stays on.

I'm not getting any codes in A1 or A2 or any cels for the first time ever in the four years I have had this car.

I just recently replaced the oil trap. Everything has been gone over with a fine tooth comb over ...

Thanks for the info. I do have this manual downloaded just had not looked at the instrument panel section.

Went thru sequence 3 for the tachometer section and the tach and speedo went vertical. I cleared the 1 3 2 code from A7 and it gave me a 1 1 1 but it will probably will come back I'm sure. I ...

oh, ok... you are talking about the oil trap. Just changed mine. Was a wee bit of a job. It was really really gunked up with oil including large solid burnt looking chunks at 145000 miles.

what is oil separator?

any side effects?

Hope and think you're right. I looked almost everywhere in the manual could not find anything about port A7.

Do you know where this info may bewritten in the manual or elsewhere?

thanks

Or is code 1 3 2 on A7 no RPM sensor signal.

If so where is the RPM sensor?

thanks