Question about 2007 Buick Rendezvous CXL SUV

2 Answers

M buick stalls when I am driving it. I have to pull over, put it in park and it starts back up again. never know when it will happen. Replaced fuel pump. Dealer cant figure out what is wrong. says it has to stall when they have computer on it.

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  • mdhunter1518 Oct 01, 2010

    it quits when my foot is on the accelerator! They say they have driven and driven it but unless it happens while they are driving it, they dont know what the problem is.

  • ryan Jul 17, 2013

    my 2007 buick rendezvous does the exact same thing word for word. i was wondering if you found a fix for the problem

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2 Answers

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  • Buick Master
  • 757 Answers

It doesn't really need to have the computer connected, a simple OBDII scan tool while driving will suffice.

I'm am assuming that when your Buick stalls it is when you are at a stop light or at any other time that you aren't pressing the throttle.
That problem is likely caused by a faulty or dirty IAC valve. The valve is an electronic choke that allows air to the engine when the throttle body valve is closed...hence, your foot is off the gas.

Less common problems for random in gear stalling is an engine-side/bank 1 oxygen sensor fault, a vacuum leak, TPS fault or CPS fault. But those also cause a starting problem as well which is not mentioned in your query.

Posted on Sep 30, 2010

  • 1 more comment 
  • Mike LaPres
    Mike LaPres Oct 01, 2010

    Does the service engine soon light come on or flash?

  • mdhunter1518 Oct 02, 2010

    no engine light, just battery light after car quits. At first I thought it was the battery and new one installed also. new spark plugs, fuel pump, air filter installed

  • Mike LaPres
    Mike LaPres Oct 02, 2010

    Have the alternator tested. Autozone and Parts Plus will do it for free.

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Pure nonsense
Did they even drive it, with the scanner on it, not likely
They don't want those jobs,why else would you, and thousands of people on this site,have the same problems with dealers.

Find a good repair shop close to home.

Does the dealer even know, if your loosing spark,fuel,or anything else? Easier to give it back to you

Posted on Sep 30, 2010

  • Anonymous Oct 01, 2010

    You can go to a dealer,maybe a different one or a local repair shop, but you need to leave the vehicle, until it does act up, or someone really good at diagnosing these sort of issues,is on to something.
    Not knowing when it will quit or be repaired, is unacceptable. You see other people on the site, in a similar situation. Only continued and proper testing will give results.

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