Last post on Mar 03, 2009 at 10:40 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
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Chevrolet S-10, Fuel System, Truck
#1 of 27 in the tank fuel pump replace
Apr 01, 2007 (9:21 am)
can the in tank pump be bypassed and a universal type external pump be mounted. the pumps run about 250 for a replacement but a external universal runs about 50.
#2 of 27 Re: in the tank fuel pump replace [jimmurray1946]
Apr 01, 2007 (12:30 pm)
This is the first I've heard of an "external universal fuel pump". Who manufactures them? Do they have a web site? Seems to me that any company that promotes a deviation from designed fuel delivery system is asking for a law suit when the thing starts leaking and burns down the garage.
#3 of 27 Re: in the tank fuel pump replace [jimmurray1946]
Apr 02, 2007 (8:10 am)
There are external pumps, need to be located as close to the tank as possible. Fuel pumps push better than pull. Make sure that the pump pressure is high enough for your application.
I never put one on, I myself would just bite the bullet and go with in tank.
#4 of 27 Re: in the tank fuel pump replace [gonogo]
Apr 02, 2007 (11:30 am)
thanks, this is not my truck but belongs to a woman on a limited fixed income that asked me to help her. her husband passed away and she is at a loss as to what to do about the truck as it is her only transportation. to purchase a new pump would reduce her spendable income for the month by half so you see why the external pump is a option. thanks, jim.
#5 of 27 Re: in the tank fuel pump replace [jimmurray1946]
Apr 03, 2007 (8:40 am)
Are you sure its the pump? Have you checked the inline pressure with a gauge?
#6 of 27 Re: in the tank fuel pump replace [hoodlatch]
Apr 03, 2007 (7:24 pm)
valid point, i will do that. i havnt looked at it as yet, i am basing the pump replacement on a report she recieved from a local mechanic shop. thanks for the suggestion.
#7 of 27 Re: in the tank fuel pump replace [jimmurray1946]
Apr 04, 2007 (8:23 am)
Before I went to too much trouble, I would change out the fuel filter. It's about $10. bucks and 30 minutes of work for a DIY'er. Don't forget to use your jack stands.
#8 of 27 Re: in the tank fuel pump replace [hoodlatch]
Apr 12, 2007 (8:48 am)
I am in the same boat as the OP, with an 88 S10 blazer. Good point about burning down the garage, but the same applies to having to drain 30 gallons out of the tank, before I can drop it so I am curious as well, to know if the pump in the tank, will block the flow, or allow an external one to pull through it.....
The 200 TBI FI system only requires 9-13 psi, so I am guessing there are some reasonably priced external pumps that can do that, but of course, its not something a dealer would recommend
I would settle for buying a $50 pump that would let me drive the truck till the tank ran out, and then drop the tank and do it right, and at 16mpg, that wouldn't take much.......
From a safety pov, using the same signal line to turn on the external pump, would maintain the integrity of whatever else exists between the computer, the oil pressure, and the relays.
Besides, as I said, I would settle for being able to drive it out of gas. Dropping the tank is not beyond me, but dealing with 30 gallons of fuel, is actually bordering on stupid.... After handling that much fuel, it would take a week for the buzz to wear off, so I could do the pump!
Thanks for any comments or suggestions.
#9 of 27 Re: in the tank fuel pump replace [singlewc]
Apr 12, 2007 (2:39 pm)
Have you crawled under it to see what all is involved to undo the bed and slide it over to get to the top of the tank? When I dropped the tank on my S-10 it had about 10 gallons in it which was more than I wanted to deal with. The next time, before I go through all that again, I'm going to pull the bed. While I have the bed off I'm going to make a removable access plate, something GM should have done from the beginning.
#10 of 27 Re: in the tank fuel pump replace [hoodlatch]
Apr 13, 2007 (10:00 am)