JustAnswer > Chevy
Ask A Question|Register|Login|Help
JustAnswer

Chevrolet

Ask a Chevy Question, Get an Answer ASAP!

Have your own Chevy question?

15 Chevy Mechanics are Online Now
characters left:
Not a Chevy Question?

Question

I have a 1990 chevy pick up trk 1500 , 5.7 engine. I have no voltage to the fuel pump fuse or relay.Engine turns over and I have fire to the plugs.Where would be my next test point for voltage to the fuel pump.     kmb3

Submitted: 642 days and 21 hours ago.
Category: Chevy
Value: $9
Status: AWAITING CUSTOMER ACTION
+
Read More

Optional Information

Optional Information:
1990 1500 P/u silverado 5.7

Already Tried:
testing voltage with the key on at the fuel pump fuse and fuel pump relay.

Answer

Hello XXXX, You should have power to the orange wire at the relay ,if not check the gray fuse link at the junction on the fire wall. If the relay is turning on, you will then get power out of it to the in line fuse. The black and white at the relay will only have power when you turn the key on for a few seconds ,then turn of if the engine is not running. It is controlled by the ECM. sending a wiring diagram and some information to help you find the problem,Jerry.

graphic
View Full Image
graphic
View Full Image
graphic
View Full Image

Picture
Expert: roadsidejerry
Pos. Feedback: 99.4 %
Accepts: 538
Answered: 2/4/2008

auto mechanic

Auto Mechanic 39 years, 30 with NYPD Fleet Service Division

+
Read More

Related Chevy Questions

  • sqeeking noises when i turn left and clunking noises already
  • I have a 2005 2500 hd duramax and I have a error code co201.
  • first of all my temp gauge is not working it is stuck at zer...
  • What is idal voltage of mas airflow switch .My code reader
  • 1997 S-10 4x4 pickup auto V-6 will not crank or start. Batt
  • I am trying to replace the oil pump on a 1998 k2500 4wd 350c...
  • Is there a hand-held programmer for the Allison Transmission...
  • 2001 Astro Van hood is stuck. Can't tell if cable is broken...



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.