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RPM Problem #590045 03/31/03 03:49 AM
Joined: Mar 2003 Posts: 23 New Brunswick, Canada S SteveCEG OP New CEG\'er
OP SteveCEG New CEG\'er S Joined: Mar 2003 Posts: 23 New Brunswick, Canada	Hi folks! Here's an intersting one to think about. My '98 Mystique (Zetec) will 'jitter' (that is, just about stall), when the engine is cold, and I pull it into reverse. If I let it sit for about 2 min, it's fine. The other problem is that if I have it sitting in park, and rev the engine, it will stutter between 1000-1500 rpm. Smoothes out after that.... I have a couple of ideas : 1) Change the O2 sensor (I've already changed the forward one) 2) TPS problem (but why does it work OK after it's warmed up a bit???) 3) Fuel pump (but it does it not matter how much fuel is in the tank) Filters are fine (changed recently - hey, with 200,000 mi, I have too!!!) Cheers!! '98 Mystique (Zetec - ATX) 430,000 km !!

Re: RPM Problem #590046 03/31/03 04:46 AM
Joined: May 2002 Posts: 21,653 Albany, Georgia K Kremithefrog I have no life
Kremithefrog I have no life K Joined: May 2002 Posts: 21,653 Albany, Georgia	my car does the same reverse thing your's does. don't know why. 98.5 SVT 91 Escort GT (almost sold) 96 ATX Zetec (i brake to watch you swerve) FS: SVT rear sway bar WTB: Very cheap beater CEG Dragon Run - October 13-15

Re: RPM Problem #590047 03/31/03 04:59 AM
Joined: Jun 2001 Posts: 2,299 Windsor CT J JSmith_dup1 Hard-core CEG'er
JSmith_dup1 Hard-core CEG'er J Joined: Jun 2001 Posts: 2,299 Windsor CT	Try cleaning the IAC valve and EGR valve and their passages through the intake manifold. I feel sorry for the people who don't drink. When they wake up in the morning, thats the best they're going to feel all day - former President Lyndon B. Johnson

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