Question about 1991 Chevrolet S-10 Blazer
It will idle and drive but only 15 MPH will not accelerate over 3000 RPH. Please help
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Posted on Jan 02, 2017
Is the check engine light on? If so check what codes are stored. It sounds like the m a p sensor.
Good luck dont forget to rate.
Posted on Mar 08, 2009
Your going to have to get the ECM scanned, Auto Zone scan's for free and most garage now will scan for $10.00 to $15.00 since they all have the scanners now and need the business.
You could have a Vehicle Velocity Sensor (V V S) going bad or the wire harness it self. The V.V.S tells the ECM how fast the drive shaft is rotating and calculate's what gear it should be in relative with the engine speed and throttle position, and transmission fluid pressure.
Regardless you need the Blazer scanned to pin point why your transmission is shifting the way it is. Could be as simple as time for transmission oil and filter change for $125.00 or a loose wire harness.
Check your transmission fluid and try not to run the blazer to hard, to replace the transmission start at $1,900.00 for a rebuilt.
Good luck and hope this helps. Keep me posted
Posted on May 26, 2009
I'm actually going through the same thing, after i just had my fuel pump replaced. Mine turned out to be my Mass Air Flow sensor (MAF) which when not working properly has the same effects as your acceleration not working.
Posted on Oct 05, 2009
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