Question about Cadillac Cars & Trucks
Check for a failed cat converter blocking the exhaust gasses
run the fault codes to check for other faulty sensors
Posted on Jan 04, 2017
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Posted on Jan 02, 2017
what u do is go to your local auto supply store and buy throttlebody cleaner you remove the rubber hose from the throttle body with the engine off of course u open the throttle and spray cleaner in it then use a tooth brush inside it replace the hose done
except it will be hard to start the first time crank engine over with foot to the floor on the gas pedal do not pump it
Posted on Oct 19, 2008
SOURCE: no acceleration
I had the same problem with one exception. It would rev higher than 3500 but the higher it revved the more it bogged. I had the catalytic converter replaced. I thought I bought a new car. Acceleration is just like new. It was easy enough to test. My mechanic cut a hole in the exhaust pipe in front of the catalytic converter. It sounded like a truck but the acceleration difference was immediate. Easy diagnosis.
The car is hard to shift because the more you press on the accelerator the more the computer for the transmission won't let it shift. Which in turn causes the car to bog more sending more unburned fuel into the catalytic converter. Which in turn causes more carbon build up and more back pressure. Vicious cycle. It will only get worse.
My thermostat caused the entire problem. Thermostat was stuck open, engine never got to operating temp most days. Car burned rich. Bad gas mileage. A lot of unspent fuel being dumped into the converter. Probably have some underlying cause that needs to be addressed. Bad plugs, wires, coil, fuel filter.
Posted on Jan 21, 2009
Check your fuel pressure it should be between 25-35. If you do not want to test it then just replace it. If you have to spray gas into the throttle body and it runs great when floored then you are not getting sufficent fuel to your engine and that is the fuel pump
Posted on Feb 14, 2009
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