Skip the auto shop - Our mechanics make house calls

Q: hesitant when i press the gas. and rpms below 1k at idle and makes grinding noise when started

asked by on

When i start my truck i think it misfires or something because it will make a loud grinding noise and it will only go to 1k rpms barely at idle if it even stays on. I can only get up to 30 mph and even that takes some time. I cant make it up hills at all, and the cat. Converter gets red hot. Its really hesitant when i press the gas and when i let go it trys to die so i have to press the clutch to keep it on and thats barely even working at this point. The oil gage is on the other side of the needle if that matter. And a boot on the small hose connected to the air filter hose and the top of the engine had a hole in it so i cut it from the hole and put it back on. I have no idea on what to do and every mechanic said it would cost 1 to 2 hundred to do the test the think they need to do and im broke. Someone please help...

My car has 180000 miles.
My car has a manual transmission.

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

Hi there. From the description you have provided, there would appear to a combination of problems, going on with your vehicle. The grinding sound as you start the engine may be starter related and could be the result of excessive cranking. The engine misfiring and barely staying on, could be caused by a leaking fuel pressure regulator. Removing the vacuum hose to the fuel pressure regulator and seeing raw fuel would be an indication, replacement is required. The catalytic converter getting red hot, is an indication of excessive fuel entering the catalytic converter. The catalytic converter may be damaged/restricted at this point and could be part of the reason there is such a lack of power. The clutch barely working may be, time for clutch replacement. The oil pressure gauge needle on the other side could be, a faulty oil pressure sending unit. Replacement of components without proper diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle's lack of power 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: Engine went into "limp home mode with power train fault wrench indicated in dash. It will not accelerate. Not pulling any load.

Hi there. Your vehicle's wrench light, Check Engine Light and lack of performance go hand in hand. The vehicle's PCM (powertrain control module) has recognized a fault and put the vehicle into limp home mode. It could be, a throttle...

Q: Code p0128

Code P0128 is engaged specifically when the engine itself does not get to operating temperature in a specified time period. The only things that can cause this problem is an issue with the thermostat, head temp sensor, and the coolant...

Q: vehicle using oil after complete engine overhaul

Engines that have been completely overhauled and rebuilt will burn some oil for the first couple of thousand miles. It is in these first couple of thousand miles that the engine does a lot of breaking in. After an engine...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
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.