When accelerating veh runs rough - 2001 Pontiac Grand Prix

Year make and model helps. Codes also. A few different things can affect timing.

Engine Runs Rough, Stalls, Hesitates on Acceleration, Hard ...

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Ford Probe Engine Runs Rough, Stalls, Hesitates on Acceleration, Hard Starting, Poor Performance. This is a verified problem based on 9 reports. Learn more ...

Starting Problems - 1997 Ford Probe - RepairPal

repairpal.com > Questions > Ford > Probe > 1997 Ford Probe

Dec 5, 2010 - Starting Problems on 1997 Ford Probe ... If the engine runs rough,stalls, hesitates on acceleration, is hard to start, or has generally poor ...

A new misfire/hesitation on accel. Problem.. - ProbeTalk.com Forums

forums.probetalk.com > Tech Section > 2nd Gen (93-97) V6 2.5L

that could be transmission issue/ front end issue/ with out driving the vehicle hard to say.
my 88 had overdrive shudder going up hill transmission need a rebuild. that all i got with out driving the veh srry.
when trying to figure out what going on with the veh you need to isolate the cause of the vibration , front. rear of the veh.put the veh on jack stand and drive it see if you can figure were that vibration is comeing from

idleairvalve stuck turn key to on poss 5 times with out starting veh after 5 time start veh should idle normal

the flashing ses lamp means theres a catlist damaging missfire with the eng DONT DRIVE get veh scaned to see what cyns are missfireing.

Check the fuel filter and replace one

It sounds like you need a complete tune up and filter change on the car/truck. By doing this it should correct your problem. Hope this will help you.

hi guess your engine has lack of power also a rough tick over ?your codes tell me you are running lean on bank 1and2 this can be due to many things its a matter of checking of one at a time 1 a bad coolant temp sensor 2vacuum leak 3 dirty injectors also reach over the top of your engine behind the intake dead centre of the windscreen there is a 9odeg rubber elbox check for a hole if thats your problem its only 3usd good luck please rate this answer thanks pete

no problem. If you are getting that low of voltage on a load then you might want to test the alternator as well to make sure it is running at capacity.

Jeep has been having a problem with this. i take it u have a 4.7L or a 3.7L. when the when to fix this problem they should of replaced all the valves (intake and exhaust). theres a tsb on this and the dealer can look it up. even if you paid for the service they will fix it for free cuz it wasn't fixed the first time. take it back to the them and tell the to read the tsb and fix it right.