Q: Fuel trim bank 1

Hi, it could be a failed brake light switch. If you have a faulty brake light switch, the shifter will not move. Locate the brake light switch by the brake pedal and check to see if the rubber bumper is...

You may be having a problem with one or more of the wheel speed sensors. Make sure all of the tires are of the same size and type and then have the system checked to see what wheel speed sensor...

Hey there. This sounds like an anti-theft issue which could also be related to the chip in your key not being properly read by the car's computer. I would suggest taking it to the dealer and seeing if they can...

Hello. If your transmission is having trouble identifying gears, then there is likely an issue with one of the sensors or components. It may be possible that the input or output speed sensors (https://www.yourmechanic.com/services/speed-sensor-replacement), or one of the shift solenoids...

Hi, thanks for writing in. I'd be happy to provide my insight. There are a few other possibilities with this scenario. The blower switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-blower-motor-switch), the blower motor itself, function switch or the blower fan relay (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-blower-motor-relay) could have a...

It is very difficult to definitively say what the issue is. Have you had the vehicle scanned for diagnostic troubleshooting codes (https://www.yourmechanic.com/article/how-to-read-and-understand-check-engine-light-codes-by-jason-unrau)? If not, you should start there. Due to your vehicle being pre-1996, the method of receiving codes will...

Hi there. The P0033 OBD-II error code (https://www.yourmechanic.com/article/p0033-obd-ii-trouble-code-turbo-charger-or-supercharger-bypass-valve-control-circuit-deleted-by-john-nelson) is a generic code that typically indicates a problem with the Turbocharger or Supercharger Bypass Valve Control Circuit. In most cases, the reason the code is triggered is due to a vacuum...

Hi there. If oil is causing the spark plug on cylinder number 4 to foul out every 600 to 700 miles, then the valve guide seals to that cylinder are damaged and need replaced. The valve guide seals prevent excessive...

Hi There, What you are describing is a common problem with a dirty or faulty mass air flow sensor. The mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) monitors air intake as it is mixed with fuel prior to being injected into the...