1992 Other Chevrolet Models

1992 CHEVROLET
205,000 MILES • 6 CYL • FWD • AUTOMATIC
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GMCTRUCKER
  • MEMBER
  • 1 POST
i have a 1992 chevy lumina euro with a 3.1 engine & it jumps & jerks going down the road & it dies at stops but starts right back up. i have replaced the EGR valve, modulator valve, plugs & fuel filter. now what?
Aug 24, 2008 at 1:12 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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MERLIN2021
  • CAR REPAIR CONTRIBUTOR
  • 17,250 POSTS
You may have a vacuum leak, get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs! If that doesnt do it, you may need a new idle air control valve, it's bolted to the throttlebody
If no leaks found check coils and fuel pressure.
https://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.
You can rent the test gauge at Autozone.
Aug 24, 2008 at 6:42 AM
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