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# Vacuum leakage # Air filter clogged # Fuel pump not delivering sufficient fuel to the injectors # Leaking head gasket # Timing belt and/or pulleys worn # Camshaft lobes worn
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∙ 16y ago
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Will spark plug gap causes a RPM gauge to go up and down while idling?
The spark plug gap can cause the RPMs to fluctuate, while idling. The more probable cause of the fluctuating RPMs is a bad camshaft.
Why does your 1997 KTM 360 stall while idling down hill?
It could stall if you use the rear brake while going downhill. Is this the case?
Why does my 1972 Ford Mustang with a ford 302 motor rev up and down while idling?
You have a vacuum leak at the intake.
What makes a 97 Saturn SC2 rpms go up and down while idling?
The Idle Air Control valve located in the throttle body.
Does your car use more gas idling or driving down the street?
It depends on how long you are idling, or how fast you are going. If you know you are going to be idling for a long time, it's best just to put your car in park.
94 E320 Mercedes idling up and down?
Have your sensors checked.
89 Toyota sr5 4wd 3liter while idling will rev up and down over and over again Its really bad when oil is down around half also when the clutch is pressed in?
check your coolant level.
What is the problem 1992 dodge caravan with 3.3 engine shuts down while on the road fuel sys good no codes will not restart for a while then run for a while and just shuts down?
sounds like ignition module. Check for spark while cranking engine when it decidedly shuts down on you.
When my car goes on the highway the heater doesn't work very goodwhy is this?
If it blows warm while idling and cool as you accelerate down the road, the coolant is low and or doesn't have proper mixture for your avg. temperature.
How do you stop 350 engine with fuel injections from idling to high?
set the idle down on the carb
Why does car heat up when idling and cool down when moving?
It is more than likely a thermostat
What could be the possible problems with a 1992 Ford Explorer that overheats while idling and driving under 35 mph but during freeway travel the temperature gauge cools down to normal?
Check and see if the fan cluch is good. Your fan. At higher speeds, the fan is not needed due to the high airflow. At low speeds and idle, you need the fan to operate to cool the car.
