When driving 60 mph on highway, which I try not to do, the engine runs at or above 4000 rpm. Is this normal? Thanks
Is this a manual or automatic transmission? When was the last time the fluid was changed? If it's a 4 speed and a 4 cylinder engine than that could be the right RPM. It could also be the overdrive is not working. Some SUVs have a overdrive override button on or near the shifter.
Testimonial: "Thanks a lot Chris. It is an automatic 4 speed. Bought over the winter, so I am sure fluids need to be changed."
SOURCE: Blazer transmission not shifting properly beetween 1 and 2
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
SOURCE: At highway speed over 65 MPH the temp gauge goes to near redline,
POSSIBLE HEAD GASKET ISSUE i suggest having it looked at professionally, this is not a small fix unless its just the thermostat, which hovers around the $20 range and somewhat skilled and comfortable do it yourselfers can handle this one.
So if you are comfortable doing this or know someone who can try it, if not its garage time.
SOURCE: When I press the gas the engine is very loud and
Exhaust leak?Bad water pump bearing,bad idler pulley bearing,power steering unit,
Hello
The engine
and automatic transmission in this vehicles drive train
are fully electronically controlled by a computer called the PCM and
TCM (Power Train Control Module, Transmission Control Module). When a
problem like this or other drive-ability related problems occurs the
computer stores a record of the problem (there are of course some
exceptions to this, like the fuel pump, engine coolant temperature
sensor and MAF sensor for instance) in the form of a fault code in
its memory, to read these fault codes you must have the systems
memory scanned with a special tool. Once the fault code(s) are read
you then must perform the appropriate diagnostic testing to find and
resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL
A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR
HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
Did you flush the grit out of the transmission cooler and the lines to it? If not you may have ruined a new transmission.
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