Idles fines but hesitates when trying to accelerate
SOURCE: i have a 1995 chevy lumina 3.1 and upon starting
you need a tune up...plugs, possible wires too, they might have a lot of carbon tracking deposits on them ...clean (IAC) sensor, if you"ve never cleaned it, believe me it"ll be dirty.. and then make sure you completely clean you throttle body too inside and out! but wait an hour after before starting to let it air dry...clean air filter or replace it, and replace fuel filter if it hasn"t been replace in a long time. also after you"ve done this purchase a can of Sea Foam fuel system cleaner $10 and pour 1/2 can into 1/2 tank of gas and drive around even if its running "a little rough", for about 30 minutes and this should clean out any fuel injectors that may be possibly clogged up! if you you cant drive the car but will idle only after cleaning (idle air control), pour some seafoam in the tank and let it idle for about ten minutes then try to see if it will run. If none of this works then you probably have a fuel pump not putting out the correct pressure!
SOURCE: Hi, my 2002 malibu hesitate
Hi,
Code 300= multiple cylinder misfiring detected
Code 404= EGR valve position sensor circut fault (could mean bad EGR valve or tube leak)
Code 443= EVAP VMV circut fault
All these codes could be a by product of the real problem which I suspect is mechanical in nature.
The whistling sound you hear is what concerns me. That sound is usually due to your engine sucking air from either a leaking intake manifold gasket, a leaking plenum gasket, a leaking or cracked / broken vaccuum line / air hose, or air intake hose is off or loose. Check all your vaccum hoses / plastic lines especially the rubber connecting boots and 90 degree boot connectors and your air filter, filter box is sealed and air intake hose from air filter box is tight / air filter not restricted. If all those look ok, spray starting fluid around intake to engine mating surface where gasket is while motor is idling. if it revs up, locate that area and spray it several times verifying motor revs up each time. That would indicate a leak in the gasket. Do this also for the intake plenum, but do not spray near the air intake hose from air filter box or throttle body.
See if any of those isolate a problem and let us know if you find anything......Mike
SOURCE: hesitation , skipping,engine cuts out when accelerating
Im having the same issue I believe. I have a 94\' Chevy 1500 and when i accelerate it will jerk like the gas has cut out but it wont stall. It just jerks and slows me down. It only seems to do it when going up a hill. I feel like it could be the fuel pump or possibly some intake gaskets?
SOURCE: 2002 chevy avalanche hesitates when accelrating and check engine light starts blinking
THE BLINKING MEANS THERE IS A MULTIPLE CYLINDER MISFIRE CAUSING CONVERTER DAMAGE. NOT SURE KNOWING WHAT MOTOR YOU HAVE IF ITS THE 4.2 THERE IS A CAM SENSOR ON THE PASS SIDE FRONT OF THE HEAD THAT GM HAD SEVERAL PROBLEMS WITH. FIND A PLACE THAT WILL PULL THE DTC CODE FOR YOU. VERIFY ITS A MISFIRE AND/OR CAM SENSOR CODE, IF IT IS REPLACE THE CAM SENSOR. YOU HAVE TO REPOSITION THE POWER STEERING PUMP TO REMOVE AND INSTALL THE SENSOR
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