Q: High idle, loss of power, overheating
My car has been idling high. While I'm driving, it seems to lose engine power and gets a bit overheated. However, the temperature gauge is showing normal operating temperature. I had the transmission fluid and coolant levels checked and they are at appropriate levels too. What should do to improve the way it runs?
Recommended Services
| Clean Throttle Body | $109.17 - $370.59 | Get a Quote |
| Thermostat Replacement | $157.20 - $759.78 | Get a Quote |
| Loss of power Inspection | $94.99 - $114.99 | Get a Quote |
| Car is overheating Inspection | $94.99 - $114.99 | Get a Quote |
Hello. Thanks for writing in about your 1994 GMC K1500 Suburban. A dirty throttle body will cause the power loss and RPM fluctuations. Also, a thermostat opening slow could be the cause of your overheating concern. This should be checked to see if the thermostat gauge is returning readings that are inaccurate. If you want to have this looked at, a certified professional from YourMechanic can come to your car’s location to diagnose your vehicle’s loss of power and overheating.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
How do you turn on the Auto Headlight function?
If your car is equipped with auto headlights, this is more than a convenience feature. They will automatically turn on and off based on the level of ambient light outside. That ensures better safety at all times while driving (we’ve...
Car shuts off when stopped or going slow
There are many reasons why a vehicle may stall at a stop or at low RPM. I would recommend having your vehicle's stalling issue inspected (https://www.yourmechanic.com/services/car-is-stalling-inspection) at by a knowledgable technician, such as one from YourMechanic, to determine the exact...
Tires grinding when I turn left or right
This is probably something that needs to be looked at as soon as possible. Two likely causes could be the either an inner fender liner that is dragging in the tire or the plastic belly pan has either come loose...
I have a secon generation Honda FIT 2009 model. Which fluid should i use for my transmission CVT or ATF?
You should use Honda ATF-Z1 fluid. This is supposed to be the correct fluid for all vehicles 2010 and older.
Throttle position sensor adjustment
Hi there. In many cases, the TPS sensor needs to be calibrated correctly after rebuilding throttle body and cleaning idle control valve. It should have a voltage reading of 0.50 volts while the throttle is closed, key engaged but engine...
Sport mode fuse location in 2012 Nissan Rogue?
Hello. My research does not indicate that there is not a fuse for the sport mode feature. It may be possible that the switch itself is bad, or that there is an engine management issue that is preventing the sport...
My car is showing code P1445
Hi Emily. This is one of the common codes associated with the secondary air injection system on that particular Toyota engine. One of the valves may have failed or has contamination inside. The secondary air injection system is an emission...
Codes p0300, p0304
Hi there. As you already know, replacing components without diagnoses can be expensive and time consuming without resolution. A faulty fuel injector(s) is a possibility (https://www.yourmechanic.com/services/fuel-injector-replacement) but, the P0304 (#4 cylinder misfire) may be affecting other cylinders causing the P0300...
Trouble starting car after refueling.
Your car has a small purge valve that controls the venting of fumes from the fuel tank as these fumes build up inside, particularly when you are refueling the car with gas. The EVAP system prevents fuel vapors from the...
Related articles
A Buyer's Guide to the 2012 GMC Yukon Hybrid
The The GMC Yukon is about as big and powerful as any SUV can ever get. However, in the past, that also meant paying a large sum every time you hit the pump. GMC has addressed this problem with their...
How Long Does an Oil Cooler Last?
The The heat that the engine produces can produce a lot of damage in the right situation. Making sure that all of the systems on a car that reduce the heat of the engine are working properly is important. The...
How to Keep Your Car Running Well When It’s Hot Outside
Your Your car is affected considerably by the environment around it, including: Cold, freezing temperatures Dry, arid climates Hot temperatures and direct sunlight Precipitation in the form of rain or snow If your car is exposed to moisture all the...
Browse other content
Estimates
Maintenance