Skip the auto shop - Our mechanics make house calls

Q: Reduced engine power warning on, power loss, RPM decrease - 2005 Chevrolet Suburban

asked by on

My car has gone 152,000 miles and has an automatic transmission. The other day I was driving on the highway at around 45 mph. The dashboard started showing the reduced engine power light illuminated. Suddenly, the car began to lose power. I looked at the tachometer and the RPM was around 1100 and wouldn't increase. What might be the problem?

A: It is possible there is an issue in the ele...

It is possible there is an issue in the electronic throttle control system. Faults need to be read out of the engine computer to determine if this is the case. Accelerator pedal position sensor, throttle position sensor, or throttle motor output could all be causes for the engine to go into what appears to be a failsafe mode. You may want to enlist the help of a mechanic, such as a certified technician from YourMechanic, who will be able to read out faults and correct this loss of power issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Get a quote

What others are asking

Q: Grinding noise, no acceleration, and filthy transmission fluid

Hello. If your batteries are dying that fast, then something is staying on electrically in your vehicle. If you do not have power windows or door then this should make it simple to diagnose. I typically start by checking...

Q: I want to install tachometer what do I hook to in the ignition switch?

Hi there. Take the power wire to the tachometer (the input wire) and hook it into the return wire on the coil system. This will register the tachometer and make it work. Put the ground wire on a good source...

Q: Can't get out of Park w/o manual release 2007 BMW 328

Hello - I would check your brake light switch and the fuse for the brake lights. If you have no brake lights, the brake switch has likely failed, preventing the shifter from leaving the Park position, without the manual override....

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.