Question about 2000 Chevrolet Blazer

1 Answer

2000 Blazer Will not stay running

I have a 2000 Blazer 4WD with 180,000 miles and an automatic transmission. Cruising down the highway at 60 mph, ambient temp is 95 (roughly) degrees, the truck acts like it is running out of gas. Kick it up into neutral and give it gas and it and shuts down. This is after about 30 minutes. Fuel tank is half or better. Fuel pump does not run when key is turned on, but runs when key is turned off, engine cranks, but will not start. Let it sit for 20 minutes or so, fuel pump runs when key is turned on and when key is turned off. Engine will start, but it sputters and usually dies. After about 45 minutes to an hour or longer, fuel pump runs when key is turned on and then off, engine cranks and runs like a top, then dies again. No check engine light or codes in the ecm. I am a mechanic, but do not have a whole lot of expertise with this fuel system and i don't want to needlessly change parts. I thought it might be the fuel pump so
today I dropped the fuel tank and installed some fuel line from the outlet to the return on the fuel pump. Let the pump run for almost an hour with no defects or issues. Put everything back together and cranked it up. Ran like a kitten for about ten minutes, then the same thing. Fuel pump relay in the fuse box was almost too hot to touch. Swapped it for the rear window relay and after a while, it started up, but after 10 minutes, the same issues arise. No check engine light, no codes, no truck. No fuses are blown. I have checked the ignition system and there are no issues with that. Any thoughts?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 6,826 Answers

Wow, you seemed to have changed what I would have recommended to someone in your shoes.

If the fuel pump relay is hot, I think that there could be a crossed wire somewhere.

I would take it to an auto electric shop to diagnose problem if it's worth putting more money into it.

Posted on Jul 05, 2010

Ad

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.
New users get to try the service completely Free afterwhich it costs $6 per call 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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Ford Explorer 1998 rebuilt transmission



Hello
The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM


Did you flush the grit out of the transmission cooler and the lines to it? If not you may have ruined a new transmission.

Aug 30, 2012 | 1998 Ford Explorer

1 Answer

Automatic, V-6, ideal RPM at 70 MPH?


Sounds like the transmission is not shifting into a higher gear. 2,500 to 3,000 rpm would be more realistic for a highway cruising speed. The higher rpm may not be a big deal as far as the engine is concerned but it will hit you pocket book pretty good when you loose the mpg that you should get. I would personally either limit your driving until it can be checked or at least slow down so that the RPMs are in the range listed above. Let me know what they find, my curiosity is peaked!

Feb 22, 2012 | 1989 Dodge Raider

1 Answer

I have an 87 pontiac bonneville engine has a bit over 250k miles, and it runs rather well, however it will stall out at times, and for no appearant reason, sometimes when stopped at a light, sometimes when...


if you already replaced the fuel filter, it could be low fuel pressure to engine from a bad fuel pump. check the fuel pump relay first ! it could be getting hot and shutting down. check the fuse too. and run some good injecter cleaner in it, the injecters might be clogging up. good-day !

Aug 30, 2011 | 1997 Pontiac Bonneville

1 Answer

Truck shifts out of gear at 50 to 60 miles an hour jumps in and out of overdrive at those speeds


check the tps ( throttle position sensor ). a bad tps causes transmission shift issues, bucking, jerking, idle surging, engine cutoff, hesitation on take off, surge while cruising down highway. am not saying this does the trick, but it is a good starting point. good-day !

Jul 19, 2011 | 1996 Dodge Ram

2 Answers

"OD off" light up on


The OD is a extra gear do you need it not really you can drive 150 miles if anything its the switch button that went out

Jun 12, 2011 | 2000 Toyota Camry

1 Answer

DUE TO DEAD BATTERY 4WD WAS TOWED 25 MILES WITH


I don't have good news for you.
If you have an automatic tranny on your 4WD this is prohibited, per Toyota. It's your transmission that's probably making the noise. It's lubricated when the engine runs and the transmission pump is circulating oil through the system. During towing, when your drive wheels were spinning with the engine off, no fluid was being pumped through the system. Friction, etc. can quickly wear down bearings and seals, etc.

If this was towed professionally they should have known better... You might have a case due to professional negligence.

Hope this helps, but sorry.

Jul 27, 2010 | 2007 Toyota RAV4

2 Answers

1997 Dodge Ram 4x4 1500 transmission shifting problems.


good day, you may try replacing your automatic transmission fluid, a good run will be noticeable, hope this helps, have a nice day

Feb 08, 2010 | Dodge Ram 1500 Cars & Trucks

1 Answer

97 4 runner 4wd seems to struggle or slip over 60 mph


Your electronic overdrive is worn... Go to a transmission specialist to have it serviced &/or repaired.

Jun 13, 2009 | 1997 Toyota 4Runner

1 Answer

Automatic transmission wont shift.


smell the fluid, does it smell like burnt rubber, if it does you may have burnt the clutches. also if is 4wd make sure is not in 4wd.

May 28, 2009 | 1997 Chevrolet Blazer

Not finding what you are looking for?
2000 Chevrolet Blazer Logo

321 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8514 Answers

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

Answer questions

Manuals & User Guides

Loading...