Skip the auto shop - Our mechanics make house calls

Q: no power only just goes

asked by on

Problem started with a jerk , loss of power and resumption normal. Then problem moving away , jerking , loss of power. Got worse jerking , no increase of rpm for more gas . car starts easily . slight surging and low idol speed . can increase this with the throttle. when idling , taken off plug leeds one at a time . runs on 3 cylinders hear that all 4 go when leed replaced.Opened air filter to see if there was O2 starvation. Slight but not excesive backfiring

My car has 150000 miles.
My car has a manual transmission.

A: The jerking may be related to what is calle...

The jerking may be related to what is called a mass air flow sensor which is a unit that regulates air flow into the intake as it is mixed with fuel prior to being injected into the motor. When this is not working correctly, this can cause the jerking problem you are describing. This can also contribute to the backfiring problem if the engine is running lean. I would recommend having an expert from YourMechanic come to your home to diagnose and repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Truck dies when not on the throttle.

Hello. A few things I would check are the timing, the idle air control valve, and the condition of the vacuum hoses. Retarded ignition timing can sometimes cause low throttle issues, and can definitely cause stalling. The idle air control...

Q: When I push the gas the RPM go up and down and don't got power the RPM going to down when I stop and the light is overhet

Hello. From what you describe it would appear that your vehicle is overheating at stops, and then cooling off when it gets moving. This can be caused by a few different problems. A few common causes are: clogged...

Q: High idling happening occasionally after driving over 8 miles

Hi there. Most of the time this is caused by a problem with the throttle body. I usually clean it out first and inspect it for wear. If there is wear around the throttle plate then it needs to be...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...