Skip the auto shop - Our mechanics make house calls

Q: engine noise, sluggish, leaks

asked by on

I have 2 questions. 1) When I step on the gas I feel and hear the engine roaring while driving, but it doesn't go as fast as it should I can tell because my brother's 2004 DTS flies when you step on the gas pedal. When I put it into 3rd gear it runs normally, but when I put it in drive it doesn't act right. It's leaking about a dollar size puddle of transmission fluid. I checked the fluids and they are all good. Do I need to replace the tcc solenoid? Could that be the problem? 2) I came home today and parked my car in the garage. 2 hours later it leaked oil the size of a soda can. I moved the car to make sure the leak was from my car and the same thing happened 2 hours later. I checked all the lines going to the motor to see if one slipped off or was cracked and didn't see anything wrong until I looked under the car and saw oil dripping slowly. I checked it yesterday, and was at the regular level. When I looked today it was almost dry. When I lifted the hood my motor and radiator cover had some oil on them. I did a scan on it and didn't get any codes for the motor. The only codes I got are p0174 and p1860. I can tell the difference between motor oil and transmission fluid, and I didn't mix them up. What is going on with my car? Thank you.

A: First off, the P0174 code is for the system...

First off, the P0174 code is for the system to lean, the P1860 code is for the TCC solenoid electrical system. The P1860 code points to possible transmission issues.

The acceleration issue could be due to many different items such as the torque converter, transmission fluid level, bad fuel pump, or a failing transmission. The oil leak could be coming from many places, but the most common since the leak is on the radiator cover is a oil line that is under pressure. From the symptoms you have described, this car should not be driven until these issues are resolved or the car could be damaged further. A qualified technician from YourMechanic will be able to diagnose your leaking issue and engine noise to determine what repairs are needed.

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: Check engine light on, temperature goes to hot, noisy engine, car shuddring and turns off.

Fault codes need to be read out from the engine computer. There is a technical service bulletin (TSB) out by Lexus that points to a faulty thermostat causing a Check Engine Light, and that the thermostat should be replaced based...

Q: I need to know if I am being ripped off

They sell a kit for $85 via Bonanza for your Audi A4. A timing chain solenoid replacement usually calls for about ~5.1 hours of labor which can average out to around $100 per hour. So I would expect around $800...

Q: Check engine light on & oil pressure dropped

Hello. It is possible that you are getting a false reading as a result of a faulty oil pressure switch. It is also possible that there is an oil leak and that’s what is causing the oil pressure to drop....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...