Skip the auto shop - Our mechanics make house calls

Q: The vehicle is experiencing a lack off power.

asked by on

G'day Robert, i drive a 1997 1FZ-FE FZJ80R 4.5L petrol Toyota Land cruiser,the vehicle is experiencing a lack of power and throttling between the RPM ranges of 2200-2800 only on hwy use, between 100 and 120 kms per hr in hwy gears.It's never had this problem before. It does not have an idle problem, pinging, stalling ,misfire or knocking problem. The timing is set at 7 degrees, The engine light does not appear at any stage . The parts that i have changed so far and are all genuine toyota parts, which i will list for you below. Spark Plugs,Ignition Leads,Air Flow Meter, Air Filter,Fuel Filter, Distributor .These parts where changed on the 18/11/2016. This vehicle has no oxygen sensor as the exhaust manifold has been changed with pacemaker extractors. The parts i haven't changed are> Throttle Position Sensor and Knock Sensors, Do you think these parts may be the problem ?

My car has 444400 miles.
My car has an automatic transmission.

A: Your throttle position sensor is a possibil...

Your throttle position sensor is a possibility if there is a spot along the sensor that is damaged. The vehicle data can be watched with a professional scan tool. As you sweep the throttle, you should see the voltage change at a steady pace. You may see the voltage reading drop out when the sensor pickup passes over the dead zones. Consider hiring an experienced technician like one from YourMechanic who can come out and take a closer look at the lack of power concern and offer a more personal diagnosis.

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: Car stopped randomly and didn't drive afterwards

Hello, thanks for writing in. The computer will go into a failure mode and may not allow the electronic throttle to open if it detects a major computer or sensor fault. There can be many possible failures that will cause...

Q: can I use 5w30 grade for 0w20 in engineoil for landcruiser 1ur-fe engine

Yes, per the manufacturer's specifications, 5W30 grade is the recommended oil for this motor.

Q: Car stalls when idling

Your problem may or may not be associated with the engine cleaning. But for a moment, let's assume that it is. You hit the right spot when you changed the distributor cap, but if there are any covers or tubes...

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.