Skip the auto shop - Our mechanics make house calls

Q: Engine light on and vehicle running poorly.

asked by on

The Engine light indicates a need for service causing the transmission to shift rough. Sometimes the TC light comes on and the engine loses power. If I turn the car off and wait a few minutes, the car will run again, but the Engine lights stays on and the screen calls for service.

A: The symptoms your CTS is experiencing are s...

The symptoms your CTS is experiencing are symptoms I have seen often in prior Cadillacs. What I suspect is that your CTS is likely dealing with problems concerning the throttle body. The engine in your CTS is equipped with an electronic throttle body. If your Cadillac’s computer senses a problem with the throttle body or a problem with the attached sensors, then the TC light will illuminate with the a check engine light. Power will also be reduced and the vehicle will be made undrivable. Your Cadillac becomes undrivable in order to keep the engine safe from damage, caused by overheating. Along with the fact that the symptoms will likely be intermittent, the failed part could be the throttle body itself, one of the sensors attached to the throttle body, the connections to the throttle body or even a bad ground strap. Since there are so many possibilities, it is best to enlist the assistance of a certified mechanic to inspect why your car is losing power and displaying the check engine light. This is the quickest and safest way to get back on the road.

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

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: Loud Exhaust

Hi There, It sounds like the previous owner may have cut part of the exhaust muffler out or potentially removed the catalytic converter which may cause it to be a bit louder than normal. Unfortunately, without inspecting the car to...

Q: Clicking sound from brakes

Hi There, This can happen for a number of reasons, but is usually related to a brake pad being installed incorrectly or potentially a loose brake caliper. I would suggest taking a look at the springs, shims and clips that...

Q: I have a 2003 toyota camry with "check engine" light on. I was told by one mechanic at Goodyear that it is due to catalytic conve

I think what the mechanic was telling you is that there are two different ways to replace a catalytic converter. The first way is to have factory type parts installed, that will normally come with the converter, and the adjoining...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.