Q: Sometimes my car hesitates after a stop when trying to accelerate. The check engine light comes on

Hot engine coolant, possibly leaking in the passenger compartment via the heater core, or a heater control valve, may be the source of this unpleasant smell. It doesn't take much of a leak (a few drops will do) to create...

Code P0120 (https://www.yourmechanic.com/article/p0120-obd-ii-trouble-code-tps-a-circuit-malfunction-by-jay-safford) relates to the throttle position sensor and can be caused by the following: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing Bad TPS Bad PCM Code P0220 (https://www.yourmechanic.com/article/p0220-obd-ii-trouble-code-throttle-pedal-position-sensor-switch-circuit-b-malfunction-by-andrew-quinn) relates to the throttle...

Hello. Even though your lights and radio are still working, the battery may still not have enough voltage to engage the starter. Use a multi meter to ensure your battery is testing at least 12.6 volts. Next, test your alternator...

Hey there. This is likely related to the fuel level sending unit (https://www.yourmechanic.com/services/fuel-gauge-sender-replacement) inside your fuel tank. This is a unit that using a float system to measure the fuel level inside your fuel tank and relays this information to...

This may be related to many different things such as a bad oxygen sensor (this monitors the activity of the catalytic converter), a bad or dirty idle air control valve, or potentially low fuel pressure. The low fuel pressure will...

Hi there. There are several possible causes for the lightening bolt to remain on. The PCM (powertrain control module) has recognized an electrical fault in the ETC (electronic throttle control) system and disables the starter relay, creating a no crank...

Hi there. Beyond the MAF sensor, in most cases, an engine that stumbles when it's cold is caused by one of three different components: clogged fuel injectors, a dirty throttle body, or an EGR valve (https://www.yourmechanic.com/services/exhaust-gas-recirculation-egr-valve-replacement) that is damaged or...

The E 30 can be a great driving car, but at 20 years old, It can have just about anything wrong. The self-diagnostics on the car are not very sophisticated, so you will have to do a systematic diagnosis. Making...

Hello, thank you for writing in. It is perfectly fine, and preferred by some, to run fully synthetic oil in your vehicle. You must make sure it matches the weight rating listed in your owner's manual. While we cannot personally...