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1991 Buick Regal Question: stalling

 

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stonge30, Beverly Hills, CA, September 18, 2009, 19:30
 Rookie

my cars service engine soon light came on 3 days ago; goes on and off. Car has now stalled 4 times while driving but only when applying the brakes. brakes are also faulty have had them checked and can not find anything wrong with them. Help please!! LOVE MY CAR!

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, September 18, 2009, 20:46
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     Master

    If the Check Engine light/Service Engine Soon light illuminates while you are driving, the car's on board computer sees a fault in the engines management system that is causing an excess amount of pollutants to be emitted from your car. This could result in engine damage if left neglected. Some problems that can cause the Check Engine light to stay on may take two "drive cycles' to complete before illuminating the Check Engine Light. The computer sees a problem and looks for an identical set of circumstances to occur to confirm that it has indeed seen a problem before turning on the light. A Check Engine light that continually flashes while you are driving is serious and is a sign that the computer sees a problem that seriously risks damaging the catalytic converter which may result in an expensive repair or even may cause a fire! Diagnostic codes are stored in the vehicle's computer and can be retrieved using a scantool that communicates with the computer in your car. We have in our Repairpal website an encyclopedia with in depth articles about computer, and computer control systems, emission and driveability problems. http://repairpal.com/check-engine-light.
    The cause for stalling when brakes are applied should be more obvious when the scan tool is used to retrieve codes.
    What is wrong with the brakes, excess pedal travel, spongy pedal, noise when braking, hard pedal or excess pedal effort required to slow down the car?

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    Visitor, August 31, 2010, 09:40
     Rookie

    sounds like my 92 buick regla 3.1. i checked it on the thingie and it said electronic spark timing monitor error number 42, found an instructional vid on youtube that tells how to fix it

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    Visitor, September 29, 2010, 21:51

    haha! bringing a thread back to life! If your car stalls when you apply the breaks you have a (probably unpleasant) vaccume leak between your cylinder head and your brake booster, if the vaccume leak is bad enough you will feel it in the break pedal, it will feel like you no longer have power breaks (to test pump your break pedal while the car is off, feel familiar?) a vaccume leak will also cause your engine to run rough and turn on the MIL (check engine light) to find and fix the vaccume leak just pop your hood and try to locate the obnoxious hissing noise on the line between your engine and your brake booster, repair the line with electrical tape for a quick fix or replace it for a proper fix, make sure the line isnt rubbing or being cooked on something, the lines do get old and crumbly and break, but if its rubbing or melting your problem will reoccur! hope this helps!

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