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2001 Blazer 4.8 V6 engine

Tiny
PROBLEM2099
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 180,000 MILES
This is my first car so I have a few questions.

1st. As im driving The Service engine soon light will start flashing and as I accelerate the car seems very sluggish, as if something is holding it back. What could be the cause of this?

2nd. When I brought the car to my local auto parts store to get the reading from the comp, the Scanner seems to get no response at all. The guy told me that it just might be a fuse that is effecting it. What fuse would I have to look for to see if he was correct?

Any help would be appreciated.
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Thursday, October 27th, 2011 AT 9:30 PM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So the scanner wouldnt power up off the cars connector the scan tool connects too?We need to start by getting your codes first.
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Thursday, October 27th, 2011 AT 9:35 PM
Tiny
PROBLEM2099
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  • 10 POSTS
How would I go about getting that?
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Friday, October 28th, 2011 AT 3:45 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Look in the inside fuse box fuse number 2 its labeled cigar Ltr its a 15 amp fuse thats the one that powers your obd2 connector that the scan tool hooks up and powers the scan tool up. You should have power to both sides of that fuse. Let me know what you find.
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Friday, October 28th, 2011 AT 4:00 PM
Tiny
PROBLEM2099
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The codes I was given are p0300 and p0101
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Tuesday, November 1st, 2011 AT 5:29 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Does the engine always have this big power loss?Also does the engine miss all the time or just on acelleration etc?
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Wednesday, November 2nd, 2011 AT 9:30 PM
Tiny
PROBLEM2099
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  • 10 POSTS
It seems just on acceleration
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Thursday, November 3rd, 2011 AT 1:12 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Have you checked for excessive back pressure in the exhaust?
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Friday, November 4th, 2011 AT 3:16 AM
Tiny
PROBLEM2099
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No, how would I do that?
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Sunday, November 6th, 2011 AT 2:12 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
You would have a exhaust shop do it or get a back oressure tester and screw it into each exhaust manifold hold it at 2000 rpms and see what the pressure was.I just noticed you had a P0101 mass air flow sensor code try removing the mass airflow sensor and cleaning it with some mass air flow sensor cleaner. Then see if it runs any better if it does then looks like atleast one of the problems is a bad mass air flow sensor. Let me know what happens.
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Sunday, November 6th, 2011 AT 4:02 PM

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