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Chevrolet Blazer has no power and engine bogs down

29 messages,  Last post on Aug 22, 2012 at 4:42 PM

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What is this discussion about? Chevrolet Blazer, Engine, SUV

Messages Page 2 of 4

#6 of 29 2000 Chevrolet Blazer Bogs down by mmstei2

Sep 03, 2008 (8:18 pm)

My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving. Can we have pressure without flow? Initially the code was p0171. Now that we cleared it it hasn't come back on. Pulled O2 sensor to relieve back pressure and there was no change. Cleaned connections on battery. On scanner TPS checks good( 0-100%). ABS coming on at brake, could that have anything to do with it( no light)?

#7 of 29 2000 blazer distribitor by silbs

Dec 06, 2008 (4:14 pm)

The car was backfiring and the mechanic said the distr. needed adjusting but that it was not adjustable. He made things work by "grinding" something. The car now runs fine, but am I in for trouble in the future because of this?

#8 of 29 no power at all... by jadoty

Jan 27, 2009 (8:34 am)

ok so the other day i had to make a two hour drive in relitivily cold weather. so i started my blazer 15 min before i left, and i noticed that the service engine soon light was flashing. so i popped the hood to check all my fluids and what not, everything was ok. the light shut off and then i left. i was driving down the road and my brack light turned on. then shut off.....about 30 min later i went to pass someone and it hesitated to accelerate, then about another half hour later it stalled on me while i was driving. i pulled into the gas station, and re started it, and it started fine. so then i continued. everything was fine until later on in the day. i the blazer sat for about 5 hours after the first set of stuff.....i was going to park in the parking spot, and it just died. i lost all my power, and i noticed that i had smoke coming from the right side of the hood. so i popped the hood and look for the source and i couldn't see anything. then i had someone come to help me get it in the parking spot and he wanted to try to jump me, and well when we tried that i almost killed his car. i drew so much power that i almost stopped his engine....originonally i was thinking O2 sensor due to the light the slow acceleration, but i still had good gas millage. so i am just a little confuse....and i do know how to jump a car....

#9 of 29 Re: no power at all... [jadoty] by jlflemmons

Jan 27, 2009 (8:27 pm)

Replying to: jadoty (Jan 27, 2009 8:34 am)
Have your battery checked. If it shorted out, it will pull enough current to overload (and possibly damage) the alternator and cause enough drag to kill the engine. It won't jump start either. The engine of the other car will slow down, and the jumper cables will heat up. Even running, the load of the shorted battery will cause a low voltage condition causing all sorts of issues for the computer.
 
I have seen two different cars just recently where batteries less than 90 days old have shorted out. Somebody (there are only a couple of companies that make batteries, they just change the labels for the different brands) is making junk batteries. I use Delco and have had no problems, Interstate seems to be okay. The bad ones were both from AutoZone.

#10 of 29 Re: 2000 blazer has no power. engine bogs down [dprovin] by 402driver

Sep 30, 2009 (7:13 pm)

Replying to: dprovin (Jun 12, 2008 7:18 pm)
Check for vacuum leaks downstream of the MAF. I had an issue with deteriorated vacuum lines allowing excess air into the intake manifold causing an intermittent misfire due to an excessively lean mixture. Was driving me NUTS.

#11 of 29 Re: 2000 blazer has no power. engine bogs down [402driver] by punshka

Jan 15, 2011 (3:45 am)

Replying to: 402driver (Sep 30, 2009 7:13 pm)
Good Morning,
 
We are going to ask you a stupid question, if you don't mind? What would MAF mean? We're not sure of what that could mean. Let me know. Thank you.

#12 of 29 Re: 2000 blazer has no power. engine bogs down [punshka] by skiextreme2

Jan 15, 2011 (5:30 am)

Replying to: punshka (Jan 15, 2011 3:45 am)
MAF is the mass air flow sensor and is located between the air filter box and the carb. You'd probably have one or both of these codes po101, po102 and possibly duplicate codes.
 
Rick

#13 of 29 Re: Response by punshka

Jan 15, 2011 (5:40 am)

Mr. Rick,
 
We don't have a MAF problem. Lets do this, go back and read all of my post that we've put up and please, let me know if I may have not went into depth about. We really need some help with fixing the issue that is at hand. Please, help, if possible. Thank you....

#14 of 29 Re: Response [punshka] by captferd

Jan 16, 2011 (1:14 am)

Replying to: punshka (Jan 15, 2011 5:40 am)
Are you smelling raw gas at all?

#15 of 29 Re: Response [captferd] by bchro2

Feb 03, 2011 (5:19 pm)

Replying to: captferd (Jan 16, 2011 1:14 am)
Got a question. I have a 2001 Blazer, last week as I was climbing a hill I attempted to accelerate and heard a "pop" and my engine started to bog down. Over this last week the bogging down has got progressively worse but only happens when you attempt to accelerate. I took my vehicle into the chevy dealership and now they have replaced plugs, wires, distributor cap, rotor, PCM (Powertrain Control Module), and still can't figure out what it causing the problem. In the past year the fuel pump and filter has been replaced twice, the intake manifold gasket, water pump, radiator, and I am sure some other things that I can't think of. Any ideas what could be the problem???
 
In addition, anytime you hit the gas to accelerate the RPM gauge suddenly shoots up to 3.5 and shoots back down to 2, and keeps going up and down until you let off of the gas.

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