Last post on Nov 26, 2013 at 1:43 PM
You are in the Chevrolet Blazer
What is this discussion about?
Chevrolet Blazer, GMC Jimmy, SUV
#269 of 496 Re: 2001 Chevy Blazer wont start [delk1977]
Apr 11, 2009 (11:22 am)
I had this same problem with my 2001 Blazer. i had to leave it at work overnight.i had it towed to a machanic the next day he put the key in and it started right up. he couldn't fine a problem. it started up fine for about 3 weeks,then same thing happen.so i did some research and this is what i found out.GM has serveral security systems.on the 2001 Blazer it is the pass key version so if your key becomes worn the system does.nt recognize your key the same cane happen with key that are not from the dealer. the good news is there is a easy fix. you have to reset the system, her's how(put the key in the ignition turn it to the start position the truck want start release it to the on position leave it in that position for 10 min.then turn the key to the off position wait 5 sec. then do this 2 more times. after the third time the next time you insert the key the system will recognize the key and start. it worked for me . Try IT..... cost 30 min. of time
#270 of 496 2002 Blazer intermittant start/stall
Apr 12, 2009 (5:54 pm)
2002 Blazer intermittantly will stall right after starting. I have to hold the accelerator for about 10 minutes until it idles normally (500 - 600 rpm) to go. Most times it starts and runs just fine. I never can tell when or where this stall problem will occur. It could be the first start of the day or it could happen after the 2nd, 3rd or 4th stop/start - I don't know when it will happen. All diagnostic codes of the computer come back normal and it doesn't happen while the service man has it.
#271 of 496 Fuel pump or injection system?
Apr 27, 2009 (5:21 am)
I have an 87 blazer with a 350. Wouldnt start yesterday, poured some fuel in the throttle body and it did and then died, is it the fuel pump in the tank or the injection system and is there a test to eliminate on or the other?
#272 of 496 Re: Fuel pump or injection system? [dself]
Apr 27, 2009 (4:58 pm)
Turn the key to "on" without going to the start position. You should hear a buzzing sound from the fuel tank as the fuel pump primes up. If you don't, turn the key off, and kick the bottom of the fuel tank two or three times and try starting again. Don't laugh, this is a well established "emergency recovery" for a dying fuel pump. If you do hear the buzz as the pump primes, check your fuel filter, and check for fuel pressure at the throttle body.
I am betting on a dying fuel pump.
#274 of 496 Rough starts but runs fine
Apr 28, 2009 (7:08 am)
Have a 2001 4.3 chevy blazer. have replaced spark plugs, fuel filter, air filter, egr valve. engine runs fine gets satisfactory gas milage. My problem is the initial start. Engine rumbles upon on start-up. Like the whole engine shakes. Engine always starts and runs fine but the initial start is always rough. when you shut the engine off it does the same thing. Some times worse than other. Any suggestions why this is happening? More of an annoyance than anything.
#275 of 496 1990 chevy blazer need sum help!!!!
May 16, 2009 (9:48 am)
1990 full size blazer with a tbi 350 its stalling out only after it gets warm idles great then try to rev it up after its warm and it stalls out 1800 rpms even does so while driving but always restarts.it hasnt thrown any codes good coil cap, rotor and wires can anyone help???
#276 of 496 Re: 1990 chevy blazer need sum help!!!! [marasmom25]
May 16, 2009 (2:28 pm)
#277 of 496 1995 Chevy Blazer
May 25, 2009 (9:49 am)
Hi, I've been reading the passed posts and found it very interesting, I've had my Blazer for over a year now, and want to tune it up. My little sissy truck ran fine up until I got the brite idea to drive from florida to virginia (some 1800 miles). Before I left I changed the oil, the battery, and the air filter. The plugs, rotor and cap had been replaced with in a the passed 6 month so i thought nothing of it. I left on a rainy morning, it rained most on the way up and back. I noticed about the South Caralina border and the Service engine soon light came on border the engine was running a little ruff, and the Catalytic converter sounded like it had hole in it, the brakes had no vaccum assist and were hard to push. the further north I went the worse it got it would stall at lights and idol fast and slow, but seemed fine on the highway. In virginia I changed the plugs cap rotor and PVC valve. No change, i raised the idol a little so it would run at stop lights. And headed back to Florida. Another damp trip, but the truck seemed to run better the further south I got. Any ideas of what may have caused this. It still seems tempermental but is running a little better. The truck is old with over 200,000 miles on it but up until now the only trouble i've had is a fuel pump and tires. Also i noticed alot of carbon (black powder around the mouth of the intake can this be cleaned out like a regular carb (spray gunk) and is there anything else I can changeout during a tune up? THanks
#278 of 496 Re: 1995 Chevy Blazer [jyoung4478]
May 25, 2009 (7:44 pm)
Okay, first off, not carb cleaner, but throttle body cleaner. Something different in the chemistry.
Second, check the vacuum line coming from the intake manifold over to the vacuum resevoir. Would be in the area around the brake booster.