5.7 chevy 1500 loses power

bobsyourdaughter
0

Asked by bobsyourdaughter Oct 20, 2012 at 11:10 AM about the 1996 Chevrolet C/K 1500 Reg. Cab 6.5-ft. Bed 4WD

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

John Saffrahn
16,115

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.

1 out of 1 people think this is helpful.
Kurt Burton
1,385

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 out of 1 people think this is helpful.
Joseph Mazonde
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 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

C/K 1500
Looking for a Used C/K 1500 in your area?
CarGurus has 1,088 nationwide C/K 1500 listings starting at $1,900.
ZIP:

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 John Saffrahn
John Saffrahn
Reputation 1,110
#2 Andrew Olsen
Andrew Olsen
Reputation 500
#3 Tom Demyan
Tom Demyan
Reputation 350
View All

Related Models For Sale

Used GMC Sierra 1500"
974 Great Deals out of 61,295 listings starting at $990
Used Ford F-150"
2,595 Great Deals out of 168,952 listings starting at $1,495
Used Dodge Ram Pickup 1500"
847 Great Deals out of 15,178 listings starting at $1,222
Used Chevrolet C/K 2500"
316 listings starting at $2,900
Used Chevrolet Tahoe"
1,007 Great Deals out of 33,065 listings starting at $2,500
Used Toyota Tacoma"
554 Great Deals out of 21,170 listings starting at $2,199
Used Chevrolet S-10"
55 Great Deals out of 1,970 listings starting at $1,599
Used Chevrolet Blazer"
29 Great Deals out of 2,132 listings starting at $1,850