Skip the auto shop - Our mechanics make house calls

Q: Hesitation stumble and lack of power at low rooms and speeds.

asked by on

Engine lacks power at takeoff speeds and low rpms. Shutters when cold. Rebuilt trans and engine. Fluids are still clear. New fuel filter, mass air flow sensor, tps sensor, New spider updated injectors, New iac sensor cleaned throttle body and egr valve and passages. Pcv valve functions as should checked for vacuum leaks. Took truck to belle tire for fuel pressure test and checked out. Can drive truck on highway at higher speeds with no issues. New billet distributor with rotor and cap. New spark plug wires and plugs.

My car has 1000 miles.

A: You should check the crankshaft damper for ...

You should check the crankshaft damper for evident movement of the damper's outside part from the inside part. The rubber in the middle may have slipped. This would cause the distributor timing to be set incorrectly. You can recheck the timing again to see if timing is not set correctly and needs to be adjusted again. Try advancing timing and see if problem goes away. If it does, then replace the damper and reset the timing to specifications. A certified mechanic, like one from YourMechanic, can come to your location to diagnose your loss of power firsthand if you end up needing assistance with this. Good luck.

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

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: Trying to determine if a Honda 2005 vtec (D172A) sohc, 127 hp has an O2 upstream sensor problem or the ECU

Hello. From what you describe it would appear that your upstream oxygen sensors are causing the issue. If you disconnect them and the vehicle runs better then it may very well be possible that the signal they are sending or...

Q: Top of steering shaft inside wheel sounds dry when turning how do you fix it?

It sounds like your steering clock spring in the column for the air bag and steering wheel controls is binding or getting ready to break. I recommend having the steering wheel inspected by a mechanic who can verify the problem...

Q: No oil pumpin on one head

A few different things can cause oil to not pump to one head. The most likely cause would be a clogged oil passage, damaged oil line, or a seal that has failed. During the repair process, parts of old seals...

Related articles

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...
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.