Q: Throttle body problems

Can you see where the coolant is leaking? How often are you having to add antifreeze, always remember when you're having to add coolant to a system, if you don't add at least a mixture of coolant you will dilute...

This noise may be the starter internal gear reduction making the noise. The starter would need to be replaced to get rid of the noise. The battery should also be checked. I recommend having a mechanic, like the ones from...

Have the main integrated fuse relay box checked for connection issues (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-fuse-box). The fuse box on these vehicle have been known to cause stalling issues along with other erratic electrical issues. Contact a dealer to see if your vehicle may...

Hello there. This is a bit of a rare issue on the 1990 Chevrolet K2500. There are a few possible causes that come to mind with the issues going into reverse. The most common would be a shift solenoid (https://www.yourmechanic.com/services/shift-interlock-solenoid-replacement),...

This sounds like you may have a worn engine (https://www.yourmechanic.com/services/engine-mount-replacement) or transmission mount. I would visually inspect each mount and check for wear or cracks in the rubber bushings. Over time, a worn or cracked bushing may not absorb the...

Hi and thanks for contacting YourMechanic. Check the fuel pressure sensor (https://www.yourmechanic.com/services/fuel-pressure-sensor-replacement). If there is 60 psi, then check for power at the sensor. If there is power, then check for resistance on the sensor with the key off and...

Hi there: The only time a faulty power steering pressure switch could elevate the RPM is if it's causing the pump to draw more power to operate. However, the P0507 OBD-II Error (https://www.yourmechanic.com/article/p0507-obd-ii-trouble-code-idle-control-system-rpm-higher-than-expected-by-spencer-clayton) codes is more of an indicator of...

If you are sure that fuel is not flowing through the fuel filter that means that the fuel pump is not powered or is not functioning. When you turn the key to the "on" position, you should hear the in...

If the starter motor turns, but the starter pinion drive gear is not engaging the flywheel and turning the engine, there is a fault with the pinion drive gear and/or the actuating solenoid. The power to the solenoid can be...