1990 Chevy S-10 Fuel Problems

GRAPEAPE3

MEMBER
1990 CHEVROLET S-10
6 CYL
4WD
MANUAL
148,000 MILES

I need your help, I am stumped. I have a 1990 Chevy S10 it was given to use for our 16 yr old daughter and therefore don't know alot about the vehicle. However in order to get it to run you have to shoot starting fluid in the throttle body. There was no sound coming from the fuel pump. However we went to start it the other day and the battery was dead. We put it on a battery charger and when we went to check it a couple hours later the fuel pump was running and wouldn't shut off. We disconnected the connection at the air/fuel switch and the fuel pump turned off. However now that we have plugged it back in and replaced the air/fuel switch the fuel pump will no longer work again.

Please help we may have a haunted fuel pump?

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

It takes a starting fluid to fire it up-you are not getting fuel.

Do you hear the fuel pump come on when key at run position if so check the fuel pressure and for injection pulses comeback with the readings asap.

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Sunday, August 30th, 2009 AT 4:06 PM

GRAPEAPE3

MEMBER
2 POSTS

I can not hear the fuel pump when I turn the key. However when it was hooked up to the battery charger it wouldn't shut off. Now it wont come on again.

Where is the fuel pump relay in this thing?

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Sunday, August 30th, 2009 AT 7:15 PM

RASMATAZ

MECHANIC
75,992 POSTS

The fuel pump relay is on the left front fender panel see no.3 below

Also try this at the fuel pump relay socket jumper the orange wire to the gray wire did the fuel pump come on? Before you do this make sure the ECM B fuse is good-Good Luck