My Pontiac grand prix se has no power
Where to start,
- Check exhaust
-- Blueish smoke, Could be Fried Cylendar Rings, Verify With Compression test - Also check if the oil level is going down
-- White Smoke, Could be spark plugs, wires, or coil pack
--- Check oil for a white or brownish foam, if so head or intake gasket.
- if 3.4L, intake gaskets are a common issue, sometimes you can hear it sucking if you accelerate from the throttle body. (Be carefull, moving parts!)
- See if vehicle is having a problem with climbing over a certain RPM, If so
-- Plugged Fuel Filter
-- Plug Catalytic Converter
-- Plugged Air Filter
- If automatic
-- See if transmission is kicking down a gear during harder acceleration.
Also note that a bad TPS (Throttle Position Censor) located on the throttle body can cause this as well. Often felt as very poor acceleration or studdering during acceleration.
Failing O2 censor can cause an issue like this as well, unhooking the censor completely will put the car in a failure default setting that will allow it to operate close to normal, but make sure you replace it if it has failed to avoid replacing Catalytic Converter as well.
Start there, but it could be many other things as well. If check engine light is on, get it read. or pick up a code reader and read it yourself.
Oct 12, 2014 |
Cars & Trucks