Changed Maf senor, crankshaft, fuses, spark plugs. fuel filter and ignition modulator and the car starts but only runs about five mins. before stalling. No engine light comes on. No bad codes show up. Can't find any bad hoses. My mechanic teacher has looked and we can't figure it out. I am a student and can't afford to fix much more and nothing I have spent money on has worked so far. When I first put the maf in the car worked great for about a week but the transmission was still skipping


Asked by Apr 10, 2015 at 09:47 AM about the 2002 Buick LeSabre Custom

Question type: Maintenance & Repair

Changed Maf sensor, crankshaft, fuses spark plug fuel filter and ignition modulator. Checked hoses. No engine light comes on no bad codes show up.  After replacing maf the car worked great for a week but still skipped in the transmission..  NOw it starts and runs five min. before stalling.  Sounds great for the five mins.  My mechanic teacher has looked over and we are stumped.

3 Answers


Sounds like the original problem was with the transmission. Most likely a shift solenoid. GM transmissions are troublesome with their shift solenoids. As for the current stalling go back over the work you've done to the engine. Possibly one of the new parts you installed is defective. Your school should have a scan tool that can capture "freeze frame" data as your driving. When it stalls see what's going on. My first guess would be the IAC. HTH. -Jim


Nothing showed up when we did the scan tool. Does it matter what brand senors you buy? Are there certain things that can go wrong that don't show up on the scan tool?

1 out of 1 people think this is helpful.

It doesn't really matter what brand you buy but you get what you pay for. There are things that can go wrong that won't trigger the check engine light so there'll be no trouble codes. If the stalling is happening as you approach a stop light or at idle check for a dirty/malfunctioning IAC or dirty throttle plate. Be sure you clean them and you should be able to see what's going on with the IAC using a scan tool. The IAC position will be shown in points (numbers). You should also be able to view the throttle position using the scan tool. The throttle position sensor will provide that information. HTH. -Jim

Your Answer

Add photo

Related Questions

  • why my lasaber keeps stalling 1 answer

    My LeSabre started having the tansmission skip when going down the road and then eventually it just started stalling and the start up again. I replaced the spark plugs and then my mechanic instructor...

    2002 Buick LeSabre Custom


    Maintenance & Repair

  • stalling problem92 buick lesabre 23 answers

    My car has 229.000 miles it likes stalling after 30 minutes and wont start for 5 minutes anyone one know what's wrong coils or crankshaft sensor I fixed the ignition module I'm not sure where to go n...

    1992 Buick LeSabre Custom


    Maintenance & Repair

  • how to remove a dash cover buick lesabre 2004 274 answers

    2004 Buick LeSabre


    Maintenance & Repair

  • 2000 Buick 3800 series motor developed a skip check cool pack found one that seemed bad replaced it same thing any ideas 3 answers

    Skip check coil packs found one not working replaced it new one doing same thing is it the circuit. Board they mounted on

    2000 Buick LeSabre Custom


    Maintenance & Repair

  • Possible Mods? 37 answers

    I want to put some performance parts on this car but there isn't alot out there. I've found Cold air intake Intake manifold Exhaust manifold, but very little else. Anyone have some advice?

    1994 Buick LeSabre Custom


    Car Customization


Looking for a Used LeSabre in your area?

CarGurus has 2,604 nationwide LeSabre listings starting at $1,450.


Search Buick LeSabre Questions

Buick LeSabre Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,830
#2 John Saffrahn
John Saffrahn
Reputation 1,500
Reputation 1,340
View All

Related Models For Sale

Used Chevrolet Impala"
997 Great Deals out of 35,743 listings starting at $700
Used Buick Century"
1,289 listings starting at $3,295
Used Buick Regal"
194 Great Deals out of 10,577 listings starting at $5,900
Used Toyota Camry"
1,734 Great Deals out of 98,547 listings starting at $895
Used Cadillac DeVille"
2,387 listings starting at $1,000
Used Lincoln Town Car"
49 Great Deals out of 2,404 listings starting at $1,542
Used Mercury Grand Marquis"
55 Great Deals out of 2,589 listings starting at $1,300
Used Honda Accord"
1,393 Great Deals out of 78,668 listings starting at $1,395
Used Ford Taurus"
363 Great Deals out of 23,136 listings starting at $1,400
Used Nissan Maxima"
491 Great Deals out of 24,113 listings starting at $800
Used Chevrolet Malibu"
1,220 Great Deals out of 72,684 listings starting at $695
Used Nissan Altima"
1,569 Great Deals out of 87,988 listings starting at $1,195

Used Cars For Sale

2005 Buick LeSabre Custom For Sale
10 Great Deals out of 286 listings starting at $1,700