Skip the auto shop - Our mechanics make house calls

Q: Reduced engine power icon on

asked by on

Hey guys. I have a 2004 Cadillac SRX. Around two months ago the reduce engine power icon popped up. I took the car to mechanic and used OBD tool to scan code gave code saying throttle position sensor is faulty. We call the dealership and order both the sensor and the throttlebody because they're not sold separately. We install the part and reduced engine power icon disappears and I thought everything was OK now. Today The icon popped up again and I use the OBD two scanner and the same diagnostic popped up. I also noticed there was a little bit of oil in the intake hose that connects to the throttlebody when I disassembled it please help don't know what to do

My car has 178000 miles.
My car has an automatic transmission.

A: Hello - there are 2 problems here. The wiri...

Hello - there are 2 problems here. The wiring pigtail to the throttle position sensor (TPS) is likely bad and making a poor connection. This is a known problem with this model and engine. Replace the pigtail connector to the TPS. The oil you notice in the intake hose suggests a bad PCV valve, which should be replaced. For assistance with these issues, I would recommend having a Electrical Problems Inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose the TPS problem, get an accurate assessment of damage and cost estimate for repairs. I would recommend a PCV Valve Replacement Service to correct the PCV valve problem.

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: Check engine light

Hello. From what you describe it would appear that your vehicle may be experiencing some sort of engine management issue. The check engine light comes on when the computer detects some sort of issue with the vehicle's fuel, ignition, emissions,...

Q: module or unit?

Hi there. From the description you have provided, your vehicle Check Engine Light on with lots of warnings and exterior lighting acting weird, sounds like there may be a charging system related problem. I would recommend not driving your vehicle...

Q: i ran out of gas with my 2000 seville cadillac and refueled, it rolls over but won't start, why?

In all likelihood, the fuel pump has failed. Fuel pumps rely on gasoline for lubrication as well as cooling. Run it dry and it can overheat. When you turn the key to the ON position without trying to start it,...

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...
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.