Was told it could be the pressure valves located under a inspection cover on the side of the ******, I would have to drop the ****** to get the cover off, the frame is in the way....... can stop the hard shifting once it starts by pulling the car off the road and shuting off the engine which resets the computer, then it shifts ok for a while. the computer keeps increasing the pressure in the lines until it maxes out and shifts hard again. will continue to shift hard until the computer is reset by shuting the engine off. What do you think...... thanks in advance for any help in the matter...........
The p1811 code is the most common code for transmission in 1977 on gm front wheel drive vehicles
code criteria --
if the shift into any gear takes longer than .65 seconds to complete, code p1811 will set
the PCM will command maximum line pressure inside of the transmission resulting in harsh shifting
Basically the PCM is sensing a slip and is is increasing line pressure to maximum in order to prevent the transmission from damaging itself
there is a service bulletin link ( http:/bit.ly/P1811_bulletin
I am referencing from-- peoplestranssno1.blogspot.com.au or phone 1-888-415-2098
I went google and typed in --monte carlo transmission fault code P1811-- and the payless transmission &clutch p1811 is first up
there are plenty of sites that will help with the P1811 code
Have the transmission control module tested.
SOURCE: monte carlo
You need to rebuild the transmission,it's over heating. May want to check your transmission cooler first .
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SOURCE: 1985 Chevy Monte Carlo, need body info.
the complete nose up to the front doors are bolted on.the only thing that gets a little tricky is the lower radiator support. just take youre time and it can be all disassembled and rebolted with out too much trouble.
good luck chris
SOURCE: 2007 Monte Carlo LT
Likely the signal lights are controlled by an electronic module, not by the traditional bi-metal flasher. The bi-metal unit clicks, the module is a circut board and does not do that.
SOURCE: My 95 Monte Carlo will keep overheating then
your temp. gauge could be defaulting or your thermometer
SOURCE: Air Bag light is on on my moms 1998 Chevy Monte Carlo
If your not familiar with air-bag systems don't touch it. If you make a mistake with your inspection and accidently set off the air-bag. It becomes a costly repair and/or could result in injury. special tools are used.
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