Q: 1997 chevrolet lumina that has a p0401 code that is persistant

Hello. Unfortunately, without hearing the noise myself it is hard to make an accurate recommendation. The first thing that needs to be determined is the type of noise that is present and the possible sources. Rattling or knocking noises while...

Hi there. If your instrument cluster stops working intermittently, then it may have a bad circuit board or a bad connection. I have found issues related to the ground connection in the instrument cluster. Most of the time, this connection...

There seems to be a mechanical failure concerning your window regulator and motor assembly. In many cases, the window can become separated from the regulator and the motor moves, but the glass does not. The window regulator and motor assembly...

Hello. Cleaning the throttle body and idle valve may have been needed, but the intermittent starting and dying symptom can be the camshaft (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) and crankshaft sensors (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement). These are the codes P0335 (https://www.yourmechanic.com/article/p0335-obd-ii-trouble-code-crankshaft-position-sensor-a-circuit-malfunction-by-spencer-clayton) and P0340 (https://www.yourmechanic.com/article/p0340-obd-ii-trouble-code-camshaft-position-sensor-circuit-malfunction-by-jamahl-walker). The code P0446...

I think the rear differential: the ring-and-pinion gears and bearings specifically, are worn out (especially given your mileage). Your specifics about the conditions under which the whine is heard are excellent for diagnostics - well done! Since the whine increases...

The TPMS will need to be checked to see if the new sensor is not working or there is another sensor failure. you may have a low tire or failed sensor. Once the system is checked again the if the...

The vehicle is not equipped with an fuel pump inertia switch. Your vehicle uses fuel cutoff solenoid on engine only.

On a vehicle that has a transverse mounted engine, you may need to start by removing the passenger front wheel and splash guard. This is not always necessary but will help to access the tensioner and serpentine belt. Once the...

Hi there. It is likely that the ignition switch or ignition relay is damaged. These two components typically cause the type of symptoms you are describing. It might be a good idea to have a professional mechanic come to your...