1988 chevy Silverado
-
- Posts: 1
- Joined: Thu Sep 03, 2015 12:34 pm
1988 chevy Silverado
Just put a new engine in my truck runs great when hooked up to obd computer but when you disconnect the the obd it dies fuel pump stops pumping any ideas why?
Re: 1988 chevy Silverado
you should check the power coming out of your fuel pump relay. Should be a pink and black wire. then check power on the tan and white wire that goes to the fuel pump back at the tank or wire harness along the frame. According to the wiring diagram there is a 20A inline fuse between the pink and black wire and the tan and white wire. If you don't get power on the pink and black wires out of the relay try switching the relay out. (it should give you a two second prime when you cycle the key to the run position) start with that and let me know what you find out.
- Attachments
-
- Chevy pickup truck fuel pump wiring schematic.
- 89 pickup top1.jpg (221.98 KiB) Viewed 19946 times
-
- 89 pickup top2.jpg (96.52 KiB) Viewed 19946 times
-
- Chevrolet ignition wiring diagram.
- 89 pickup bottom.jpg (126.64 KiB) Viewed 19946 times
Browse "SIMILAR TOPICS" At The Bottom Of This Page.
Re: 1988 chevy Silverado
Do u have a 350 engine or a 305 engine? ?
Have not seen no one ask u this.. but it does make a difference. .
Thanks..
Have not seen no one ask u this.. but it does make a difference. .
Thanks..
-
- Similar Topics
- Replies
- Views
- Last post
-
-
New post 1988 GMC Sierra 1500 5.7 V8 High Idle,EGR not hooked up
by buddha131 » Sun Nov 22, 2015 11:28 am » in GMC Trucks - 1 Replies
- 6494 Views
-
Last post by carriedi
Sun Nov 22, 2015 5:58 pm
-
-
- 1 Replies
- 9116 Views
-
Last post by carriedi
Sat Oct 03, 2015 10:23 am
-
-
New post Chevy Silverado ac belt knocking
by rjlenny00 » Wed Jul 02, 2014 11:07 pm » in Chevy Silverado - 5 Replies
- 12238 Views
-
Last post by TerryAuto
Fri Jul 04, 2014 2:47 pm
-
-
-
New post 2002 Chevy Silverado radio gets no reception - help
by Nyrumest » Tue Jun 18, 2019 6:24 am » in Chevy Silverado - 1 Replies
- 10277 Views
-
Last post by carriedi
Tue Jun 18, 2019 11:01 am
-
-
-
New post 95 Chevy Silverado Crazy Mil Light Problem
by docclock » Fri Feb 24, 2017 10:34 am » in Chevy Silverado - 1 Replies
- 4848 Views
-
Last post by carriedi
Fri Feb 24, 2017 11:45 am
-