I have a 2004 Rendezvous, yesterday I was driving and started losing engine power going uphill, This morning I changed the oil which needed to be changed, I took it for a test drive and it seemed the problem had gone away, 1 hour later as I was driving it did it again, I could only do about 35 MPH going uphill, will this be an engine, transmission problem? or changing the air filter will solve it, Please Help!!!
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2004 Buick Rendezvous Question: Engine?
Answer #1mastertech6371 May 30, 2011, 10:42Master
sounds like a clogged cat converter . a shop can do a snap throttle test with a vacuum gauge to confirm.
Answer #2patrick mannion from Greg Solow's Engine Room, May 30, 2011, 22:30Master
Another possibility is a failing fuel pump, unable to provide sufficient fuel pressure or volume. Is there a Check Engine Light/Service Engine soon light on? If so codes stored in the computer of your car may indicate where the problem is.
Replyeddieyelena, May 31, 2011, 18:39Rookie
I have no lights whatsoever and it only does it now if I press the acelerator too hard if I go easy on it I have no problem and can do about 70 MPH