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: I have a Subaru Impreza 2009 and the two charger ports do not work as aux and there is no aux cable input even though the radio aux.

Check the fuses with the auxiliary charging ports to see if they have burned. If the fuse is good, then there is an open or short within the wiring to the charging ports. The radio has an auxiliary wire attached...

Q: Ecu vin verification

Hi there. This really isn't a service we offer or are best suited to give you any "good" advice on. When it comes to ECU's, we always defer to the OEM solution; due to the possibility of connectivity issues with...

Q: Feels like front right tire has vibration when turning left or merging lanes to the left at highway speed only. Bearings are okay

Hello, thanks for writing in. If the bearings are fine then the tires need to be checked first. If there is any uneven wear then this will occur. If the tires are all fine then the hubs need to be...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.