Q: I own a 1987 toyota mr2 and when i turn it on it iddles at4000 rpms do you happen to know the reason why

First the location of the knocking must be determined. The fix will vary greatly depending on the cause of the noise. Suspension components may have become worn or broken. Brake pads with worn hardware can also make some noise as...

You must be a very good driver, because it's a 12-year-old Subaru and those are fast, little cars. Normally, those clutches are going to wear out a long time before that. It could easily be a throw-out bearing. If it...

If the battery is new and good, and the alternator is good and charging, the problem may actually be in the ignition switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ignition-switch). If you have another key, try using that one. Also, check your VIN number on safercar.gov...

Hey there, thanks for writing in about your 1997 Mercedes-Benz E300. This is also related to your other question regarding the coil springs. As explained, the perch is a structure that supports the coil springs. Often times, when one or...

Hello. To replace the ignition switch, the Technician would have been "near" the dash. The only possible connection would be if he did something to block or de-activate the air passages, blend door, or related controls or the A/C. If...

Hi and thanks for contacting YourMechanic. If you have a limited slip differential, then having 2 different size tires on the axle will cause the limited slip differential to make this noise. Eventually, the limited slip will stop working and...

Hi there. As you already know, replacing components without diagnoses can be expensive and time consuming without resolution. Circuit testing for the P0201 (#1 cylinder injector circuit fault) code needs to be performed to isolate the injector circuit fault (https://www.yourmechanic.com/services/electric-problems-inspection)....

Hi there. Assuming your door seals are good, the only thing that I can imagine is going on is one of two things. Either your AC is set to blowing air from the outside of the vehicle or your interior...

You may have a transmission sensor or mechanical issue in the transmission and will need to have the computer scanned for codes that will point to the problem.