1998 Chevy Blazer has no power

Tiny
SIJONK9
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 153,000 MILES
Blazer idles fine but has no power when giving it a load. Fuel filter is fine took egr valve off and drove it and the m/v ran the same no power when giving it a load. Took catylitic convertor off and the vehicle still has no power. Also replaced cap, rotor, coil. Any suggestions?
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Monday, July 6th, 2009 AT 2:36 PM

11 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Has the check engine light come on? My concern is the catylatic converter may be plugged. Have you checked that?
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Monday, July 6th, 2009 AT 11:15 PM
Tiny
SIJONK9
  • MEMBER
I took it off and still no power with load.
Mtulipano@hotmail. Com
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Friday, July 10th, 2009 AT 3:34 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Have you checked for vacuum leaks (intake)? Also, have you checked fuel pump pressure?
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Friday, July 10th, 2009 AT 9:21 PM
Tiny
SIJONK9
  • MEMBER
The fuel pressure is 60psi with engine on. I will now check it with engine off and key on. I took the cat/conv off and checked it. I also ran the m/v w/out the convertor on and the m/v runs the same. It idles normal and no power when giving it a load.
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Saturday, July 11th, 2009 AT 7:43 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Let me know what you find.
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Saturday, July 11th, 2009 AT 8:00 PM
Tiny
SIJONK9
  • MEMBER
I found that the fuel pressure is 52-54 with key on and engine off. I also hooked up my obd2 scanner and the scanner tells me it has to be connected to the m/v ( obviously it is connected) I then connected the scanner to another m/v and the scanner is reading fine but not when I hook it up to the 98 blazer.
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Sunday, July 12th, 2009 AT 7:12 AM
Tiny
SIJONK9
  • MEMBER
The blazer is not idling anymore. I start it and it dies out.
Do you think fuel injector problems or sensors? I'm not a mechanic so my knowledge is limited.
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Sunday, July 12th, 2009 AT 8:41 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds more like a sensor. The fuel pressure is good. Make sure there isn't an intake gasket leaking.
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Sunday, July 12th, 2009 AT 10:47 PM
Tiny
SIJONK9
  • MEMBER
Ok J+N,
I puuled the Spark plugs out and they are burnt to a crisp. I put in new plugs and tried to start it. It would not stay running. I pulled one plug out and it was black and smelled of fuel after only cranking the engine 3 times. I then cleaned that plug and returned it and pulled the fuel pump relay. The m/v started and ran rough for 10 sec then died obviously b/c of no fuel. Do u still think its a sensor or a fuel injector spider problem. If its a sensor what kind would it be. I'm sorry to sound like an idiot but i'm trying to fix this m/v. Thx a bunch
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Monday, July 13th, 2009 AT 6:54 PM
Tiny
MTULIPANO
  • MEMBER
Do you think it could be the fuel regulator. Again I get 62 psi when the enginge was running ( now its not) and 56 psi with engine off key on.
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Tuesday, July 14th, 2009 AT 6:54 PM
Tiny
MTULIPANO
  • MEMBER
The cannister that is attached to the engine pipe was clogged. I never thought to check that as I checked the cat/conv. Thx for the help though.
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Saturday, July 25th, 2009 AT 4:24 PM

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