Skip the auto shop - Our mechanics make house calls

Q: Car has no power

asked by on

Runs ruff and idles ruff if u throttle it a little it stays at 1.5 rpm then after 20 seconds goes to .5 rpm and idles ruff again.All Cylinders have good compression. My Cadillac converter is not clogged new fuel pump and fuel strainer. New vacuum solenoid also it takes sometimes time to rev the engine when u floor the throttle rpms don't raise right away they slowly increase very ruff. The problem started with car slowly loosing power now it has very little power also I changed a new ecu

A: Hello. This can be caused by a number of th...

Hello. This can be caused by a number of things. Most of the time it is caused by the timing belt being worn out causing the timing to be slightly off. This is enough to affect the power of the engine. If the timing is fine and if the catalytic converter is fine then you either have a failing throttle body or possibly a sensor failure. I typically install a scan tool to the vehicle first to see if all of the sensors are reading correctly. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your vehicle’s loss of power.

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: Bosch's Website Says My Car Can Accept a Universal O2 Sensor

The definitive answer is "maybe" But with late model cars, I prefer to use the original equipment. A universal sensor, if wired correctly will not damage your system, but it also might not solve your problem. The ECM in your...

Q: car wont start

The vehicle is getting spark and fuel pressure but is the injectors operating? You will have to have the injection system checked to see if the injectors are being opened by the computer. I have seen these cars get spark...

Q: Goes in gear but goes no where. Bleed the clutch

This sounds like you have a bad clutch or transmission input shaft is not turning for some reason. You should have the transmission removed to have the transmission and clutch checked to isolate the cause of the no clutch engagement....

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.