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・Fair and transparent pricing

Get a quote

What others are asking

Q: 2012 ford f-150with ecoboost. Makes roaring sound when foot lifted off accelerator when going > 20 mph.runs fine. runs fine.

Hi there. A roaring sound while decelerating can be caused by a damaged wheel bearing or in some cases an exhaust leak. Depending on where the noise is coming from would determine the source of the issue and thus, the...

Q: car has bad smell when I run it coming from under the hood

For this diagnosis it would've been helpful if the smell was described in more detail to help you with the problem. For example, the smell of a dead animal versus the smell of burnt oil. If you cannot describe it...

Q: Car jerking at high temperatures

A lot of people have a misconception about traction control. Traction control is not a system of its own, it has no module no parts no wires. It is actually an agreement if you will between different systems on your...

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...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...