Dumb question...

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Dumb question...

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> S-10 & Blazer >> Dumb question...

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Dumb question... - 4/28/2008 5:08:38 PM

awright21

Posts: 7
Joined: 4/27/2008
Status: offline

Hey guys, a little trivia for ya. I have a 91 S-10 with a major fuel problem...I'm not getting any. So, I have decided to raplace the fuel pump. I know it would be easier to remove the bed than to try and drop the gas tank so that is what I am going to do. But I got under the truck today and got looking at it and was a little confused by the bolts holding the bed on. Are the holes threaded and how hard is it to get it to line back up?
Thanks guys.
Adam

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It's 4wd for a reason...

Post #: 1

RE: Dumb question... - 4/28/2008 5:47:48 PM

shawnvw

Posts: 1109
Joined: 1/18/2008
Status: offline

In my opinion, it would be WAY easier to drop the tank. 2 bolts, and a couple fuel lines. The bed is welded to the body, so you would be removing the entire rear body of the truck.

Are you sure it needs a fuel pump? have you checked fuses, the relay, and made sure you had 12v at the pump?

(in reply to awright21)

Post #: 2

RE: Dumb question... - 4/28/2008 9:22:31 PM

awright21

Posts: 7
Joined: 4/27/2008
Status: offline

I am almost absolutely completely unsure of what the hell the problem is. haha

The truck will crank up and run for a few minutes then shut off. It is a 91 4.3 with the TBI. When it shuts off you can try and crank it and watch the injectors and they are not even spraying. If you let it sit for several hours and try it again it will crank again and run for a few more minutes. I called Auto Zone today and they have a fuel pump for 49.99 so I was going to try that but if you have any other suggestions I am open to anything.

Thanks,

Adam

_____________________________

It's 4wd for a reason...

(in reply to shawnvw)

Post #: 3

RE: Dumb question... - 4/28/2008 10:33:09 PM

engine2

Posts: 1707
Joined: 12/24/2006
Status: offline

If you are sure its the fuel pump, I would drop the tank versus removing the bed

(in reply to awright21)

Post #: 4

RE: Dumb question... - 4/29/2008 12:59:20 PM

shawnvw

Posts: 1109
Joined: 1/18/2008
Status: offline

Check for fuel pressure while the truck won't start....the pump may be working while the injectors aren't firing.

(in reply to engine2)

Post #: 5

RE: Dumb question... - 4/30/2008 8:53:44 PM

awright21

Posts: 7
Joined: 4/27/2008
Status: offline

Awesome, thanks man. I will have to get a gauge and check it.
thanks again

(in reply to shawnvw)

Post #: 6

RE: Dumb question... - 5/29/2008 3:59:59 AM

Snedhead

Posts: 4
Joined: 4/23/2008
Status: offline

I dont know if you figured this one out yet but i wood follow the line of its not the pump just because it will fire up at all have you checked the fuel filter if i is not letting the fuel through at a good rate you will get loss of presure at the TB.

(in reply to awright21)

Post #: 7