grand prix issues

Asked by Sep 15, 2016 at 12:00 PM about the 2003 Pontiac Grand Prix GT

Question type: Maintenance & Repair

my car has zero accereration   it  pulled a maf code
so i bought a new one, still does the sams thing
every time i step on the gas the car just revs high
and sputters.  And will not rev past 3000.  Why

6 Answers

16,105

May need to clean the throttle body and IAC with throttle body cleaner (have to remove & replace gaskets), while at it use the throttle body cleaner to clean the PCV valve & vacuum hose too. Do a complete tune up or at least check/test plugs & wires. Check all fuse's. Make sure all sensors connectors are getting a good connection.

1 out of 1 people think this is helpful.
3,865

If its revving high, but not accelerating it sounds like transmission issues. If you were scanning for codes though some sort of transmission code should have come up. Hmmmmm.

Its not he tranni. It like its like there s air flow problem. When eze off after gunning it. It does like . Dog pantting kind of noise

16,105

Does it have a good air filter on it? Transmission codes has to be read by high end dealer scanners a regular scanner can not see trans codes. Dog panting, check or replace your spark plugs & Wires and that they are all tight and also the EGR, PCV Valves & Vacuum hoses, look for Vacuum leaks at the intake manifold and be sure PCV valve is inside valve cover correct. Do the dreaded compression check on each cylinder. Check that the ignition coil and distributor & rotor are good. and do as I said above in first post and check all electrical connections.

1 out of 1 people think this is helpful.

My manifold is melted all 2 Hell. On the in side why is this. It's brand new

16,105

May have been running very rich. and or very hot.

1 out of 1 people think this is helpful.

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