2001 blazer 4.8 v6 engine

2001 CHEVROLET BLAZER
180,000 MILES
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PROBLEM2099
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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.
Oct 27, 2011 at 9:30 PM
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SATURNTECH9
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So the scanner wouldnt power up off the cars connector the scan tool connects too?We need to start by getting your codes first.
Oct 27, 2011 at 9:35 PM
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PROBLEM2099
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how would i go about getting that?
Oct 28, 2011 at 3:45 AM
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SATURNTECH9
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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.
Oct 28, 2011 at 4:00 PM
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PROBLEM2099
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the codes i was given are p0300 and p0101
Nov 1, 2011 at 5:29 PM
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SATURNTECH9
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Does the engine always have this big power loss?Also does the engine miss all the time or just on acelleration etc?
Nov 2, 2011 at 9:30 PM
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PROBLEM2099
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it seems just on acceleration
Nov 3, 2011 at 1:12 AM
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SATURNTECH9
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Have you checked for excessive back pressure in the exhaust?
Nov 4, 2011 at 3:16 AM
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PROBLEM2099
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No, how would I do that?
Nov 6, 2011 at 2:12 AM
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SATURNTECH9
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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.
Nov 6, 2011 at 4:02 PM
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