Q: When stopped at traffic light. My car hesitates and pops in the engine compartment unless you hold down the gas pedal.

asked by on

When you stop and try to go it hesitate and makes a popping sound in engine compartment. Unless you hold the rpm at 1000 . Acts as tho its out of gas even with a full tank changed all plugs and wires cap and rotor .

Hello there, many faults will cause a popping noise in the engine compartment of your 1998 GMC jimmy. You have done well replacing the spark plugs, wires, cap, and rotor. If the problem is still there after all those repairs other likely faults are an exhaust leak, vacuum leak, fuel pump, crank position sensor, or a fuel filter.

To avoid any unnecessary repairs, a qualified technician such as one from YourMechanic will be able to diagnose your engine pop and hesitation and make any repairs required to resolve the issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When stopped at traffic light. My car hesitates and pops in the engine compartment unless you hold down the gas pedal.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Throttle body spacers

I have used one of these type throttle body spacers on my truck and do not notice any change in the way my vehicle runs. It is supposed to increase power and acceleration. The theory is to increase the amount...

Q: Exaust smell coming through car vents, especially when idle. Engine has a clicking noise since having the spark plugs replaced.

From what you've described it sounds like there may be a loose spark plug. This would cause both of the issues you are describing. The clicking is the exhaust gas escaping through the spark plug hole, which also allows this...

Q: Hesitation when I push the accelerator.

Hi there, The problem you are having is most likely due to the fuel pressure not holding it's static pressure to the injectors. The fuel system needs to hold fuel pressure to the injectors in order for the injector to...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.