Q: Under WOT my car hesitates and bogs once it reaches high RPMs.

asked by on

My WRX bogs at WOT. I have changed the spark plugs but that didn't give me any luck. It feels as if it cuts fuel or just isn't getting enough of it. Sometimes when I start my car on a cold start I smell a slight hint of gas but then it goes away and I smell nothing. It idles perfect at 750RPM and does not over heat. I feel zero misfires, and have no misfire codes. The only codes I have are P0037 Rear 02 sensor Heater Control circuit Low input. & P1092 TGV System 2 (LH) Malfunction (Stuck open). I would really appreciate any info and thank you in advance!

My car has 143393 miles.
My car has a manual transmission.

Hi Juan. Thanks for submitting your question tonight. Issues at wide open throttle are typically caused by fuel restriction or fuel to air mixture problems, when the engine is getting too much fuel or not enough. This can be typically traced to mass air flow failure (or being clogged with debris) or dirty air filters. The fact you smell gas would also indicate a problem with the EGR valve as well. I’d start by making sure all of these systems are in tip-top shape first and go from there. To be honest, we don’t recommend driving a street vehicle at wide open throttle at any time.

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. Under WOT my car hesitates and bogs once it reaches high RPMs.

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: the lower control arm bushings split cracked and loose

The components on the lower arm are vended separately so you can refurbish an existing arm or you can buy a pre-assembled complete control arm (arm, bushings, and ball joint all installed). The pre-assembled left and right control arms, as...

Q: Recommendation on buying a Subaru--Impreza STI or a WRX

I'd go for the STI if I were you. And, like I've said many times--if you are getting a Subaru get a standard transmission. Their automatic transmissions stink. They are horrible. They wear out. They cost a fortune to fix....

Q: Slip differential slipping

Hello. When this happens it is an indication that the gears in your differential are worn out and need to be replaced. To repair this issue, the differential will need to be rebuilt or replaced. This should be done by...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.