Skip the auto shop - Our mechanics make house calls

Q: Will not accelerate beyond 65 mph

asked by on

The car will not accelerate beyond 65/70 mph even with the accelerator all the way down. We've asked around thinking it might be the fuel filter but are being told these cars don't have a serviceable fuel filter...that you can't replace it? Do you know what could be causing this issue?

My car has 100000 miles.
My car has a manual transmission.

A: All vehicles have serviceable fuel filters,...

All vehicles have serviceable fuel filters, in fact your vehicle has 4 or more such filters. That is, EACH fuel injector has its own miniature filter basket so there are 4 potentially pluggable filters right there. There are some obvious potential causes of the symptom you are describing and a professional mechanic should be able to home in on the issue fast. The possibilities include: the catalytic converter could be obstructed due to the honeycomb inside failing; mass air flow sensor could be faulty, a faulty fuel pump, blocked strainer, malfunctioning injectors, incorrect basic ignition timing and/or advance, timing belt slipped, and so forth. Each of these possibilities have to be looked at in turn, but typically a decision tree applicable to your model is used to prioritize what to look at, as some failures are known to be more frequent than others. If you need to have this taken care of a qualified professional from YourMechanic can come to your car's location to diagnose the acceleration problem and guide you through repairs.

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: Front driver side tire moves side to side when jacked up

If you can move the tire in and out when on a jack then you may have a few different possible problems. The inner or outer tie rod ends may be worn. Your steering gear may also have worn bushings....

Q: Car hard starts, rough idles , fan on all the time and stalls when accelerating.

Hello. The symptoms you are experiencing can be caused by many things. A few things I would look at are the fuel, ignition, and engine management systems. If there is an issue with the components to any of these systems...

Q: The engine loses power after a longer drive

It is possible that your fuel pump would be getting weak. Often times if the fuel level is run low many times, this can cause the fuel pump to overheat. If the fuel pump overheats, this can cause it...

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...