Question about 1997 Chevrolet Tahoe

2 Answers

1997 tahoe wont start

I can here the pump in tank run for 2 sec. fuel pressure is around 40psi at test port but drops to 0 very quickley if i spray gas in throtle body it will run for a little i took the top intake off and about to replace the fuel pressure reg. i thought it mite be bad ???? i guess if that dont work i will change the pump i thought the pressure should stay in system for at least a little while should i replase any thing else while im in there please help

Posted by on

  • electricman5 Nov 09, 2008

    great so if i put in a compleat pump assembly that should take care of it ???? and what kind of pump should i use should i replace injectors while it is apart and pressure regulator ??? thanks george

  • blendz Nov 10, 2008

    I just replaced my pump in my 97 tahoe a month ago but i did not replace the filter like an idiot,So my girl friend and i were out the other night and my truck just shuts off at the light no warning signs at all...Well i got under it pounded on the tank while she turned it over and she started.I figuered the new pump went bad because i never changed the filter it was probably making the pump work to hard or somthing.Well i went the next day and got a new pump w/ a new filter (had to cut the old one out) I installed the pump in no time... Went to fire it up and would not fire!!! I can hear the pump plain as day ..I actually drove it up on the ramps with the bad pump the same day ..... I dont know how to check the preassure,Can it be a bad pump "its Brand new" its not getting any gas in the intake at all .I did prime it myself thinking maybe that would work stayed running about 20 sec till gas ran out IM BOGGLED. New filter...New pump...did use a after market filter (Dont think that shoud Matter) Even went as far as bypassing the filter w/ a straight hose .Seems like the pump is working good > I even Disconnected the 2 fuel lines lines that appeard to be going right into the intake and it sprayed out all over the place ...I really dont want to pull that intake off but im not getting any gas through the injectors what else can i trouble shoot (did i miss anything? PLEASE HELP!!!!!

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I went and replaced the fuel pressure regulator because i had the upper intake off put it back togeather tested fuel pressure and now it goes to 45 psi and holds about 30 min. before it would not hold any pressure so i thought it would start but it dont do i need to change out the pump book says i need 60 to 65 psi not 45 psi what do you think i have a new airtex compleat unit is that a good one and should i have at least a 1/2 tank before i run pump for cooling???? help thanks george

Posted on Nov 10, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Chevrolet Expert
  • 293 Answers

It is not the regulator if it has 40 lbs of pressure try to pinch off the return line and if pressure drops quickly it is either the check valve in the pump or the rubber seal between the pump and the sending unit

Posted on Nov 09, 2008

  • pat  murray
    pat murray Nov 10, 2008

    i would pull the pump and inspect you may only need the seal between the pump and the sender you should not have to replace the injectors or the fuel pressure regulator

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

In the am my engine will crank but wont start until i pump the gas peddel 20 times then it starts, and will start everytime all day next morning wont star In the am its like it isnt getting gas??


Pumping the gas pedal on a fuel injected car doesn't really do anything.
However, cranking the engine for an extended period of time could "pump up" the fuel pressure.
You should have about 35psi in the fuel line when you first crank the engine. If the pressure is low, it could take 30-60 seconds to build up that pressure to get the engine to start. Min pressure is around 35-40psi. The pump in the tank could be leaking pressure back into the tank overnight, or the pump relay could be faulty.

Dec 14, 2015 | 1997 Plymouth Voyager

1 Answer

03 Tahoe Z71 Flex Fuel won't start and run. Engine turns over, fires, but won't start. I can hear the fuel pump run but it is not a steady sound like I would normally hear. I am getting a P0


It wouldn't hurt to check fuel pressure with a fuel pressure gauge. you should see somewhere around 48 - 55 psi. the test port is on the fuel rail about in the middle of the rail and on the drivers side.

If the fuel fuel pressure is low it wouldn't hurt to make sure there is power to the fuel pump before condemning it. Power is supplied to the pump by the larger of the two grey wires.

The fuel pump is located in the fuel tank and the fuel tank will need to be dropped from the vehicle in order to service the fuel pump.

If you decide to replace the fuel pump get an a/c delco or a delphi pump. These are the best two option for your vehicle. Do not get an airtex brand. They are not reliable pumps although they are cheap.

Let me know if you have any questions and thank you for using fixya.com!

Feb 25, 2012 | 2003 Chevrolet Tahoe

4 Answers

Why wont my truck start without starting fluid?


Could be the Glow plug control module or glow plus them selfs....

Aug 22, 2011 | 1997 Chevrolet Tahoe

4 Answers

1997 Z71 5.7, cranks but wont start, spray a little either into the air duct and starts up and runs fine. Did notice when driving the fuel gauge spins around 360 degrees.


i would check the fuel pressure regulator. sounds like it doesn't regulate the proper amount of fuel without you having to spray the either. also, your gage could have a short it , i would check the wiring to it.

Feb 12, 2011 | 1997 Chevrolet K1500

1 Answer

I have a 95 toyota 4runner 3.0. I just checked the fuel pressure and its around 40psi during idle but when I idle it up the pressure drops to around 10psi and it stumbles and wants to die. Im stumped, is...


It seems the fuel flow rate not the the pressure is the problem here. If you have checked all your fuel filters (including the one in the tank) and found them clear. And there is no kinks or obstruction in the fuel lines, then you will need to have the flow rate of the pump tested. The pump may have to be replaced. Check you pump relay too. It shopuld cause the pump to run for one second and stop until the engine fires. It may not be re-starting the pump again and the engine is trying to get by eith gravity feed.

Mar 18, 2010 | Toyota 4Runner Cars & Trucks

1 Answer

I have a 2000 Ford Windstar. My problem is it will not start sometimes. I can crank it over it starts for a sec then dies. The only way I can keep it running is by keeping my foot on the gas pedal. please...


sounds like a fuel regulator or fule pump. your going to have to test the fuel pressure the port to hook a pressure tester is on the fuel rail. anything below 35-40psi you will need  to prob replace regulator

Feb 20, 2010 | 2003 Chevrolet Malibu

2 Answers

Chevy tahoe wont start its as if its not getting gas


If you think it is not getting gas, then it may not be. You would need to verify this by installing a fuel pressure gauge. This truck MUST have at least 55 PSI. Even a few LBS less, the truck will not start.
If you do not have pressure, or it is low, a plugged fuel filter or faulty fuel pump would be the most likely problem. If no pressure at all, a quick test to check the fuel pump is to have someone in the truck trying to start it, and you go under and bang on the gas tank with a hammer. Many times this will free up a sticking pump. But, it will fail again.

Jan 23, 2010 | 2001 Chevrolet Tahoe

1 Answer

Won't Start


You need to run a fuel pump pressure drop test, after the engine is shut off the pressure should not drop more than 5 PSI, if it does the fuel pump check valve is defective and you will need to replace pump. You haven't picked up a tank of bad gass have you? it happens from time to time.

Aug 31, 2008 | 1997 Chevrolet Blazer

Not finding what you are looking for?
1997 Chevrolet Tahoe Logo

469 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70346 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6864 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...