Question about 1991 Chevrolet S-10 Blazer
Blazer will not accelerate over 3000 RPM but will drive. It will drive but will not drive over 15MPH. It does idle and will drive but only 15 MPH. Please help.
Run fault codes to determine why the CPU placed the engine in limp mode. Check oil and coolant levels.
Posted on Jan 01, 2014
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Posted on Jan 02, 2017
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
SOURCE: won't go over 15mph
Is your check engine light on? It may be your catalytic converter is clogged, if it seems to idle ok, but no power, and also your rpm's would sound different while reving it up past 3,000. Also have someone stand behind you at the tailpipe while reving it, and see if the flow seems restricted. Does it smell like rotten eggs, or a weird sulpher smell? If you live by an auto zone or advance auto they offer a free OBD 2 scann to read your check engine light.
Posted on Dec 14, 2008
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
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