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MAP sensor & h22 timing belt w/man ten

 
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Old 10-26-2010, 10:00 PM
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MAP sensor & h22 timing belt w/man ten

Worked on the car today.

Recently I've been having a rough idle. At first it was once in a while, it would bounce when at temp, now its constant. Cold start is a little higher then normal (was 1.5k now 2.2k). All hose's have been checked, and I cleaned out the IAC with carb cleaner.

Playing around with the plugs, once the MAP sensor is unplugged, then rough idle will stop, but idle slightly high at 1500, compared to its normal 800. My father said the sensor is probably bad, except, there is no CEL for it when its plugged it (the CEL will come on when unplugged).

I tried to make reason of it like this. The car will turn to a rough idle (bounce) when at temp, when it wants to drop to an idle of 800-1k. Removing the map sensor jumps the idle to 1500, too high for the rough idle to kick in. Does that make sense? He said it didnt, I said it did. =p

I dont know what else to check though, expect the thermo valve, but the only idle problem is the roughness, no trouble starting...etc.

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Did the timing belt today also, well in the process. I changed the auto tensioner to manual. Trying to slip the belt onto the top cam gears seems nearly impossible. -.-; Its so tight, its right there, but wont give enough to slip over both cams. Any tricks any of you used for this?

Last edited by Terror; 10-26-2010 at 10:02 PM.
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Old 10-27-2010, 11:37 AM
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Re: MAP sensor & h22 timing belt w/man ten

We figured out the timing belt. Its whining, but its probably from the bottom pulley rubbing on the plastic, there was evidence of it when we first took it off it was all eaten up, so hopefully the whine will go away.

However, I have a rough idle now all the time, even at cold start. But no CEL. Any insight?
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