Question about 1999 Chevrolet Blazer

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Starts but well not stay running

99 s10 blazer will start but immediatly stops. new fuel pump. fuel psi 66
but system loses psi within 5 sec. had new cat conveter put on. check engine came on. Had code read bank 1 and 2 lean. vehicle would not start after code reading. HELP

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Sounds like you have some a leak some where in the system to where it is letting out the pressure you need to keep the car running i would check fuel pressure regulator and the fuel rails for any kind of damage to them

Posted on Jan 31, 2009

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Did you check fuel pump relay?

Posted on Dec 19, 2008

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Fuel pressure specs for gmc sonoma 4.3


2001-2004 gmc sonoma 4.3 [X, W Eng.] fuel system specs: 60-66 psi when you turn the ignition key (fuel pump) on without starting the engine. If fuel pressure drops back down quickly after fuel pump stops working (works for only 5 sec.) then you have a bad fuel pump or leaking injector spider.

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First check your fuel pressure it should be 60-66 psi with key on and engine off.If its within these specs check for clogged catalytic converter.

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1996 chevy blazer starts and then stops


Its either the fuel pump or the fuel regulator.Fuel pressure sure be 60-66 psi with key on and engine off.

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2000 blazer wont start, after 2 days it will start and run for 5 minutes but then it quits and wont start for 2 days


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Dec 09, 2011 | 2000 Chevrolet Blazer

3 Answers

2001 chevy blazer turns over but wont run. new fuel pump,new fuel filter,door switch ok,have gas and pressure at manifold, have spark,runs for a second with the help of starting fluid


Try to do the crank relearn:
Ensure that your battery is fully charged before attempting the relearn procedure. Do not leave any battery charger or jumper cables attached to the battery. Close the hood completely. Some applications require that the doors remain closed during the procedure.
96-99 S10
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start).
Allow the key to return to the all position (same as if the vehicle would have started). The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
2. When the theft system telltale stops flashing (or turns oft) turn the key to the off position for 5 seconds and then attempt tostart the vehicle. The vehicle should start on this cycle.
3. Once the vehicle is running, the password relearn is complete.

00 + S10
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start). Allow the key to return to the on position. (same as if the vehicle would have started)
2. The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
3. When the theft system telltale stops flashing (or turns off) turn the key to the off position for 5 seconds and then attempt to start the vehicle.
4. Repeat steps 1 through 3 two more times for a total of 3 cycles/30 minutes.
5. On the next cycle of turning the ignition key from off to crank the vehicle should start
6. Once the vehicle is running, the password is learned and this completes the cycle.
7. Clear any DTC's with a scan tool if necessary. DTC history will be cleared after 100 ignition cycles.

Thank you for using fixya and keep me posted, be glad to help you get your jimmy running 100%

Apr 26, 2010 | 2001 Chevrolet Blazer

2 Answers

Waths the fuel preasure on 99 gmc sierra


  • When the ignition switch is ON and the fuel pump is running, the fuel pressure indicated by the fuel pressure gauge should read 379-427 kPa (55-62 psi) . The spring pressure inside the fuel pressure regulator controls the fuel pressure.
  • A fuel system that drops more than 34 kPa (5 psi) in 10 minutes has a leak
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    I have a 2000 / s-10 pick-up what is the fuel pressure for starting and does the pressure change when running. It cranks and cranks but won't start until i spray starter fluid in air intake, than it runs...


    fuel pump issue. Soon it wont run at all. Fuel presure should stay consistant with key on.
    6 cyl 60 - 66 psi
    4 cyl 41 - 47 psi

    Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/thomas_c50676e836a18949

    Jan 13, 2010 | 1991 Chevrolet S-10 Blazer

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    97 Blazer low fuel pressure and stalls in gear


    If you have the spider fuel system, fuel pressure, key on engine off, 60--66 psi. After it starts it will run with less pressure. Are you using quality brand new fuel pumps?
    This fuel system is noted for problems, including the fuel poppets.
    fuel pressure regulator spider-c1lfixvngtm5q0chebbomq2y-3-0.jpg

    Mar 09, 2017 | 1997 Chevrolet Blazer

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