Q: Hi I needed to get my O2 sensors replaced on a 2006 Porsche Cayenne. Once done is your work warrantied and how quickly can it be d

With A/C systems, it is important to know in what order things turn on and off. From your description, it sounds as though the compressor clutch is only engaging for a short period of time. This is usually due to...

Hello there, thank you for asking about your 1987 Oldsmobile Toronado. This is something that would require first hand inspection for complete diagnosis. However, there is a technical service bulletin (TSB) that may pertain to your issue. The TSB is...

Hey there. If the motor will only start with the use of starting fluid, this suggests you may have a fuel supply problem such as faulty or dirty fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement). If you have replaced the fuel pump and fuel...

Hi there. The code P0420 (https://www.yourmechanic.com/article/p0420-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-1-by-jamahl-walker) means that the catalytic converter is below threshold and cannot burn off any emissions in the exhaust stream. The O2 sensors have pickup this fault and put the engine into limp mode. As for...

Hi there. The noise is coming from the lug nuts. Check all of the lug nuts and make sure that they are tight. If the lug nuts (https://www.yourmechanic.com/services/rotate-tires) are tight, then look at the center of the wheel and make...

On some car alarm systems, if battery voltage drops below a threshold, the alarm goes off. In your circumstance, you should have the battery load tested (https://www.yourmechanic.com/services/battery-is-dead-inspection) to rule the battery in or out as a possible cause. The security...

Hello - this is a challenge, since you have multiple serious problems. The P1259 problem is most likely what is putting your engine into "limp mode". P1259 (https://www.yourmechanic.com/question/got-code-p1259-after-check-engine-light) in a Honda is a problem with the variable valve timing mechanism...

Hello and thanks for writing in. Depending on what the vehicle does when trying to start it may help to narrow this down. If it produces a click sound, this may be related to a faulty starter solenoid. If it...

Hi there. Honestly, your acceleration issues could be a combination of bad O2 sensors (upstream and downstream), faulty electrical harness or connections and the catalytic converter being clogged or worn out. It's also possible that fuel system components are dirty...