Skip the auto shop - Our mechanics make house calls

Q: Engine is missing and gauges are not working properly

asked by on

The engine misses in varying levels. Goes from running smoothly to barely running. One time you start it it's fine the next it's horrible. The gauges act the same way. Mainly the tachometer, oil gauges. Was wondering if the computer could be bad . I checked electronic connections and the coils. Everything okay. The only code it reads is low engine temp.

My car has 180000 miles.
My car has an automatic transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided, concerning your vehicle misses at varying levels, running smooth to barely running, and tachometer and oil gauges erratic, may not be related. Assuming, the code for low engine temperature is a P0128, this could be a stuck open thermostat and should be corrected. The intermittent misfires should be recognized by the PCM (powertrain control module)/computer and set P0300-P0306 codes. The PCM could be faulty. Typically, the PCM is a rare failure. It could be, fuel delivery issue, such as a faulty fuel pump. It could be, an intermittent CKP (crankshaft position sensor). The IPC (instrument panel cluster) erratic gauge(s) is a common problem with GM vehicles. The motors driving the gauge(s) commonly fail and sometimes poor connections in the IPC circuit board are the reason for erratic gauges. I recommend having your vehicle's engine misfire and erratic gauges be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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・Save up to 30%

Get a quote

What others are asking

Q: Is engine replacement complicated?

This would be impossible to answer since the Crown Victoria never had these engines and adding the larger engine with unknown changes from one engine to the other. The motor mounting, exhaust manifolds, wiring harness and computers are all different....

Q: Car difficult to start, wants to die

Usually when a car is misfiring and running rough, there are a few different things that could be the cause. If the vehicle doesn't have enough air when starting or driving, the vehicle will want to misfire or stumble, there...

Q: Turns over strong but won't start.

With my experience with 04 Corvettes, the issue is likely the battery. With the amount of electrical components, the issue is simply battery drain. There are so many settings that require memory that the battery will drain just enough to...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.