5.7 chevy 1500 loses power

Asked by Oct 20, 2012 at 11:10 AM about the 1996 Chevrolet C/K 1500 Cheyenne Extended Cab RWD

Question type: Maintenance & Repair

When i get on a hill and down shift the Engine loses power.
this truck had o2  sensor code with a vacccum leak that was
repaired. Fuel psi is 35. Could an o2senzor do this

3 Answers

35,945

Is it 35 at idle? While accelerating it should be closer to 45-50. If its 35 during acceleration its getting what's called fuel cut.

2 of 2 people found this helpful.
3,285

Does your truck seem hard to start or crank longer than normal? 1996-1999 vortec 5.7 require 60-66psi to start. Hook up fuel pressure gauge and just turn key on without starting it and check the pressure. Idle fuel pressure should be near 50psi, and under hard acceleration, should be back near 60psi. If you don't have enough pressure, 1st change the fuel filter, if that doesn't help, you need a fuel pump. Oh, and common sense here, make sure you don't have a leak somewhere.

1 of 1 people found this helpful.
10

having a problem with chevy votec 5.7. it runs fine till it gets to a moment where by it looses ecceloration and then it starts to run rough on less than 15 000RPM tryed the filters chacked all wires change the pedal sencor

1 of 1 people found this helpful.

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 807 nationwide C/K 1500 listings starting at $2,995.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,940
  • #2
    John Saffrahn
    Reputation
    2,680
  • #3
    Rowefast
    Reputation
    2,260
View All

Related Models For Sale

Used GMC Sierra 1500
1,305 Great Deals out of 63,547 listings starting at $1,200
Used Ford F-150
3,371 Great Deals out of 226,794 listings starting at $1,250
Used Chevrolet C/K 2500
206 listings starting at $2,495
Used Dodge Ram 1500
380 Great Deals out of 11,061 listings starting at $1,699
Used Chevrolet Tahoe
935 Great Deals out of 39,822 listings starting at $2,000
Used Chevrolet C/K 3500
187 listings starting at $6,990
Used Chevrolet Camaro
531 Great Deals out of 31,314 listings starting at $1,450
Used Toyota Tacoma
673 Great Deals out of 41,740 listings starting at $2,500
Used Chevrolet S-10
12 Great Deals out of 1,187 listings starting at $1,980

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.