My 98 LE, with 70k miles, which otherwise runs flawlessly, idles a couple of hundred rpm higher than it should since a mechanic took off and reinstalled the intake manifold to replace a coolant hose.
They have turned the idle adjustment screw all the way down, and the idle goes down for a few days it seems, and then, comes back up.
The idle now also varies a little - it was rock solid before, and now will waver a little bit.
I thought vacuum leak - and sprayed water all around the intake manifold while it was idling, without any change in idle speed, so I think its not a vacuum leak.
I also have noticed that the transmission seems to hunt a little in and out of overdrive on the road.
I saw a post earlier about someone's hunting transmission - which someone responded to with a remark about throttle position sensor - which made me think - perhaps I've got a funny one of those things - but - does the TPS affect the idle?
And, it seems the car lacks power on hills at speed - not by much, but it feels like there is a difference.
The car lives in Acapulco, at my house there, so I don't have access to AutoZone's code readers.
All this is shadowed by a leaking muffler pipe - where the flexible link is in the passenger side pipe. I don't think that would have any effect on what I'm talking about - but, you never know. I bought a new pipe and it will be installed shortly.
Any suggestions?
THANKS in advance.
