Engine looses power and Back fires
10

Asked by Matthew Jan 18, 2015 at 01:07 PM about the 2002 Chevrolet Silverado 2500HD LS Extended Cab LB 4WD

Question type: Maintenance & Repair

The engine looses power when shifting down a gear on hills, the passenger side exhaust manifold is cherry hot . I changed the fuel pump, filter, EGR valve. Had the codes read and reset , Knock sensor comes up and O2 sensor. Where should I look now?

3 Answers
10

Matthew answered 9 years ago

no I have not replaced the knock sensor yet. The engine does not have any taps that I can hear. Does have an exhaust leak.

1 people found this helpful.
Mark helpful
10

Matthew answered 9 years ago

The engine seem to act up when it gets warm. When its cold it runs fine. Not sure what code for knock sensor will check this weekend.

Mark helpful
10

Matthew answered 9 years ago

Ok, I replaced both Knock sensors. The engine light went out but it still has same problem. It seems it runs fine on the flat but when come to hill it losses all power. Back fires. Any help any one. Should I start replacing coils, plugs, wires???

Mark helpful

Your Answer:

Related Questions

  • Engine looses power and Back fires 3 Answers

    The engine looses power when shifting down a gear on hills, the passenger side exhaust manifold is cherry hot . I changed the fuel pump, filter, EGR valve. Had the codes read and reset , Knock sensor ...

    2002 Chevrolet Silverado 2500HD LS Extended Cab LB 4WD

    -

    Maintenance & Repair

  • reduced engine power light 2 Answers

    what causes the reduced engine power light to go on. constant in town driving. usually goes off when idling in park has done twice while in drive at stop light.

    2008 Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • I have a 2003 Chevy Silverado 2500, the gauges will shut off after engine is turned off and back on. 1 Answer

    The gauges in the instrument panel will not work after turning off the truck and starting it back up. they will how ever start back up the next day or if I touch the power window switch.

    2003 Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • 2011 chevrolet silverado 6.0 looses power steering when turning right 1 Answer

    already changed power steering pump and hydrooboost because it was leaking

    2011 Chevrolet Silverado 2500HD LT Crew Cab RWD

    -

    Maintenance & Repair

  • backfiring and power loss 5 Answers

    Got a '91 chevy silverado 2500 4x4 5.7L. Got it from an old farmer. Just replaced the starter. Ran fine. Yesterday it started backfiring and it started smoking. I let it sit until it was done then ...

    1999 Chevrolet Silverado 2500HD LB 4WD

    -

    Maintenance & Repair

Silverado 2500HD

Looking for a Used Silverado 2500HD in your area?

CarGurus has 1,285 nationwide Silverado 2500HD listings starting at $8,995.

Postal Code:

Shortcuts

Search Chevrolet Silverado 2500HD Questions

CarGurus Experts

  • #1
    GuruXPQGJ
    Reputation
    1,430
  • #2
    Reelin68
    Reputation
    1,200
  • #3
    Steven Loeffler
    Reputation
    1,160
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
17 Great Deals out of 1,640 listings starting at $9,988
Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used Ford F-250 Super Duty
24 Great Deals out of 1,204 listings starting at $7,995
Used GMC Sierra 1500
148 Great Deals out of 7,258 listings starting at $3,950
Used Dodge RAM 2500
23 listings starting at $9,975
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used Ford F-350 Super Duty
39 Great Deals out of 2,598 listings starting at $8,888
Used Toyota Tundra
35 Great Deals out of 1,184 listings starting at $8,500
Used Chevrolet Silverado 3500
4 listings starting at $29,975
Used Chevrolet Tahoe
24 Great Deals out of 911 listings starting at $11,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.