Question about 2003 Pontiac Aztek

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While im driving down the road if i hold the gas pedal down to maintain speed after a small amount of time the rpms drop to a resting rate while still maintaining speed then my car begins to stutter I guess is the only way i could explain it it also does it slightly if im just simply idleing but mostly when im maintaining speed

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Try a tune up first. new plugs and wires. then look at the rods, be sure all the supports are in place. some times bolts come loose, dropping the rods.

Posted on Oct 22, 2009

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This sounds like you have one of a few things that could be wrong. Your compression could be off in your Engine, your fuel injectors could be slightly plugged or you fuel pump could be going out. Hope this helps!

Posted on Jun 04, 2009

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YOU FUEL PUMP EITHER IN THE FUEL TANK OR ON THE LINE IS FAILING AND SHOULD BE REPLACED

Posted on Jun 03, 2009

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At times feels like driving on rippling surface and can feel it in the gas pedal


Nearly 100% sure that you have a failed gasket in your transmission, causing the transmission pump to suck air instead of transmission fluid. CHECK YOUR TRANSMISSION FLUID LEVEL, and consider having a standard transmission service performed as soon as possible (fluid and filter change).
Also, if you have recently had a transmission service done, they left out a small gasket (I've had that happen before).

May 12, 2015 | 1999 Chevrolet Silverado 1500

1 Answer

Does the driving on overdrive mode cause high fuel consumption, because the transmission use the first three ratios mostly?


driving in over drive mode actually is what gives the economy as the engine rpms will be around 300 less than direct drive . Lower rpms = fuel savings
OD should come in around 60 klm/hr and drop out at around 50 klm/hr. When you are accelerating hold the pedal in a set position and watch the rev counter (rpms ) and each gear change you will see the rpms drop and then build back up as the vehicle speed increases At 100klm/hr the revs should be around 3200 rpms or less but if over ( say 3500 rpms) then may be the OD is not coming in. One way to test a box operation is to find a speed shop with a dynomometer and test the gear selections against loads and engine rpms

Dec 23, 2014 | 2000 Audi A6

1 Answer

Rpms fluctuating in all gears


check fuel system, fuel filter maybe need replace or spark plug

Jul 31, 2013 | Honda Accord Cars & Trucks

1 Answer

Dies in neutral


Without more info it might be hard to figure this one out. I would start by replacing the Idle Air Solenoid. Also check to see if the EGR valve is open.

Jul 25, 2012 | 1999 Oldsmobile Alero

1 Answer

1988 Mercedes Benz 300E 3.0L Gasoline F.I. ''Sputtering at Idle


ok..you must have more than one car???? you don't drive the 300 atall im guessing. #1 start car drive up the road and \back to your house. #2 let it idle till problem starts. #3 once it does start with the problem keep it alive with the gas pedal. #4 once your have it safely from dying in higher rpms "rev it" like a kid would, you know like if you were gonna race some one lol. be careful not to over rev or damage engine. you should do this for five minutes no longer than that. #5 let it idle for another 5 minutes. #6 repeat every day until problem with idling decipates. it took mine 3 300e like 3 days of this. if your not going to drive the car once you get the problem out of the way. turn the car on everyday and let it idle for 5 minutes atleast and take it for a short drive once a week. they get lonelly you know lol. later on you can just turn the car on every 2 -3 days and let it idle but still take it on a short drive atleast once a week

Dec 31, 2009 | Mercedes-Benz E-Class Cars & Trucks

1 Answer

Rpms drop at high speed, mo matter how much gas applied.


Most times they will attach fuel pressure gauge and tape it to windshield or whatever is necessary, then run it down the road to duplicate conditions when you experience your problem. Perhaps fuel pump is getting weak and cannot supply enough fuel to maintain higher speeds etc. Have had ones that had proper pressure when cool, but after running a while, pressure drops right off. It's going to be a process of elimination right now, as no codes coming up, so If you have good spark at all times, then fuel pressure is most logical thing to confirm next. Can you include which engine as well, it may help narrow things down a bit too.

Oct 13, 2009 | 1993 Dodge Dakota

1 Answer

Car starts fine, but stalls at stops and takeoffs occasionlly


Most likely it is running too ritch. should be around 7%. Mine did ecactly the same thing and I had several things done . Had the throttle body cleaned and installed a O2 senser.runs great now.

Hope this helps

May 14, 2009 | 1993 Oldsmobile Cutlass Supreme

3 Answers

Car rev up and down at startup, also car jerks at release of gas


There is a vacuum leak somewhere in the intake system. A very common problem on these cars is a PCV valve that gets stuck open and replacing that first is very cheap. If that doesn't solve the problem, then you'll have to go hunting. Listening very carefully for a hissing sound in the engine compartment will often lead you to a hose that is off or a gasket that has failed. You can also spray small amounts of aerosol carb cleaner at suspect areas to confirm the leak. The engine will change revs when fed the carb cleaner.

Apr 20, 2009 | 1991 Honda Accord

1 Answer

Wont accelerate!!!


Sounds like a wiring problem and the clicking could be a breaker kicking on and off. As for the surging in the R.P.M.'s I would be taking a look at your throttle positioning sensor. Good luck and remember to rateall the replies you get, thanx.

Oct 27, 2008 | 1999 Chevrolet Blazer

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