What is a egr valve

Elizabeth Perez

Asked by Jun 04, 2016 at 11:09 PM about the 1990 Chevrolet C/K 2500 Silverado Extended Cab LB

Question type: Maintenance & Repair

I have changed pretty much everything my truck
won't stay running ive changed distributor cap ac
comPressor spark plugs starter fuel pump spark
plug cords fuel filter and still it only ran for about
15 minutes shut off even after I let cool it starts
then shut off as if I have no gas,  it has gas. I just
put like 30. 00 total since yesterday after changing
ac compressor.  What's wrong?

2 Answers

Johnny Rico

did you check the coils or modules. what about fuel pressure. fuel filter. does it stall just idleing or when driving. uf driving it could the egr valve. (exhaust gas recirculator) not operating as it should by staying open when driving. have you checked idle air control. any other vacumm leaks. could be a new part that is already bad you have replaced. anywho throwing parts at it wont solve your peoblem as ot could be anything but diagnosing it properly might be your best bet.


Possible Ignition Control Module. Heat from the engine can affect this once they start breaking down. This can be tested at Auto Zone if you take it out. If the EGR valve was bad you would notice a hesitation when stepping on the gas pedal. When the engine is warmed up and dies on you check for spark out of the coil, it should be white in color, not a orange yellow in color.

Your Answer

Add photo

Related Questions

  • Tell me how to fix my truck. 12 answers

    I have a 1995 chevy truck it's a 2500 7.4 454. It flashed codes 32 and 36 I have replaced egr, throttle positioning unite, O2 sensor, map sensor, temp sensor, ignition coil, distributor cap and rotor....

    1995 Chevrolet C/K 2500 Cheyenne Extended Cab LB HD 4WD


    Maintenance & Repair

  • 95 Chevy Truck 5.7 idles rough seems loss power any ideas 3 answers

    95 Chevy needs some help checked for air leaks put in new fuel filter still idles rough any ideas

    1995 Chevrolet C/K 2500 Silverado Standard Cab LB 4WD


    Maintenance & Repair

  • My chevy won't pull out right? 2 answers

    When I go to pull out of my driveway my truck studders and it will stall changed the coil packs but don't understand it

    2000 Chevrolet C/K 2500 Extended Cab LB 4WD


    Maintenance & Repair

  • why is my 5.7 vortec engine idling to low 1 answer

    97 chevy with 5.7 vortec engine : its idling ruff and low , had it scanned , indicated spider injector needed replacing , had it replaced , starts right up now , still idles ruff and low , but now it ...

    1997 Chevrolet C/K 2500 Silverado Extended Cab LB HD 4WD


    Maintenance & Repair

  • why is my truck surging 4 answers

    ive changed egr valve all sensors engine compression check

    1995 Chevrolet C/K 2500



Search Chevrolet C/K 2500 Questions

Chevrolet C/K 2500 Experts

#1 joemom
Reputation 160
#2 Rowefast
Reputation 120
#3 tennisshoes
Reputation 110
View All

Related Models For Sale

Used Chevrolet C/K 3500"
299 listings starting at $5,995
Used Chevrolet C/K 1500"
1,138 listings starting at $2,400
Used GMC Sierra 2500"
223 listings starting at $2,895
Used Ford F-250"
609 listings starting at $3,995
Used Ford F-150"
3,267 Great Deals out of 216,697 listings starting at $1,500
Used GMC Sierra 1500"
1,024 Great Deals out of 56,926 listings starting at $2,300