Thread: 1991 4.9
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Old 07-05-09, 05:28 PM
DSkrab DSkrab is offline
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Cadillac(s): 1991 Sedan Deville
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Re: 1991 4.9

Quote:
Originally Posted by AMENCADDY View Post
Check your codes as suggested for clues. but if the car has no power there you may have a blown head gasket or worse. Compression check might be in order. Do you have any smoke, black, blue or white from your exhaust? Could even be transmission problems. How's your T fluid, clean or black?
I checked the computer codes. I'm not blowing any smoke, no water in the oil no oil in the water, It doesn't smell like it's running rich. I did a compession test on the front four cylinders 150 to 170 psi {I think I may have to break down and check the back 4, but it was startig to run bad when I changed plugs and they looked good}. It I need to no where the plug is that I have to jump to do the timing. The car idles
very uneven now rpms up, rpms down. Trans fluid is down half a quart but is vert clean. The car doesn't run fast and not go antwhere, if a load is put on it the motor just has no power.

Thanks