Q: Engine noise, RPM fluctuation, ABS, 4x4 warning on

asked by on

Several days ago, the dash in my car started showing the check engine light on. The car went into a limp mode. After I restarted it, the car began to shake badly and the engine shut off. I attempted to start it back up but it shut off again. I took it to a mechanic and he opened the hood. The engine was making clicking sounds. I was told that the problem was the timing chain had been skipping. He had the valves and gaskets replaced and there were no engine noises afterwards. However, another problem appeared. The RPMs would jump up and down erratically. The fluctuation of RPMs was occuring at higher speeds as well as during idling.

One time, I was driving at 90 mph, and it just switched to neutral. At that point, the dash was showing the ABS light on, the check engine light on and the 4x4 error. After taking the car to the mechanic again, the error code appeared indicating the turbo cooler. After having the turbo radiator replaced, and the car was restarted, another error code popped up showing the throttle issue. However, the throttle body checks out fine. I was told that I would need a DME replacement due to bad ECU. As I have already spent a lot of money, I'm reluctant to pay even more for something that might not be the cause of the problem. What do you think? Should I get it replaced or is there something else causing this?

Hello. It sounds like you have a problem with the DME (digital motor electronics) and the ECU (engine control unit). It would not be a mistake to have these two things replaced. It is an expensive repair but I’m confident that this will solve your issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Engine noise, RPM fluctuation, ABS, 4x4 warning on

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: I hear a creaking/squeak kinda noise when turning my steering wheel

Hello, thank you for the video. If the noise occurs when the vehicle is sitting still like the video shows, then you are less worried about any suspension components, and you want to focus in on the tie rods, ball...

Q: Nissan primera p11 won't rev pass 2500 rpm

Hi there. The car sounds like it has gone into limp mode for some reason. I would double check to be sure the MAF is working properly as this will cause this type of reaction as well. Check to see...

Q: Vehicle won't go over 20 MPH

With the speed limitation and the loud noise, I recommend not driving the vehicle until it has been diagnosed and repaired. It sounds like the vehicle is either in limp mode or a mechanical failure has stopped the vehicle from...

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 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...
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...