What are the symptoms of a 4Runner engine problem?
Symptoms are loping idle from ~200rpm – 1000rpm. Problem comes and goes and does not seem related to the engine temperature. Other than that, the truck runs very well with a smooth acceleration and gas mileage in the low-mid 20s (remarkable for a 4Runner).
What does it mean when your engine idle is too low?
If your idle is too low, it could be the IAC not talking to the computer correctly. Disconnect the IAC connector for a couple seconds while your engine is idling. If your engine idle didn’t change, you can suspect it to be the IAC. If it is working properly, unplugging it would cause your idle to freak out.
How can I tell if my idle control valve is working?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
What happens when the idle control motor is disconnected?
With the Idle Control Motor disconnected, get back into the vehicle and start the engine again. The engine should still start and run without any issue despite the idle control motor being disconnected. Be sure to tuck the wiring you disconnected up in the engine bay so it doesn’t get caught in any moving parts.
What kind of engine does a Toyota 4Runner have?
I have a 1994 Toyota 4Runner 3VZ-E (V6) SR5 with 192K. Recently, it started having problems idling (cold or warm). Symptoms are loping idle from ~200rpm – 1000rpm.
What should I do if my idle speed changes?
The next time idle lopes, take the handle of a screwdriver and tap on the Idle Air Control valve. If the idle speed changes when doing this replace the IAC valve. What system does this truck use for “cold starts”? Some use an extra fuel injector in the throttle body and perhaps this injector is not closing properly and dripping in some extra fuel.
Why is my Ford 3.0L engine still running?
Catastrophic engine failure was the eventual result of this condition. The only outward sign that something might be wrong with the water pump is rust colored coolant. The normally green liquid would become brown. This is an indication that the water pump impellers are breaking down.
What’s the average idle speed of a Toyota 4Runner?
By now, more than 200k miles it was running really rough. I got 17mpg or so (normally 22-25)because almost all my commutes and roads/highways are 50-70mph in my area. My check engine was always solid an would blink on any take off or even cruising on the highway.
How many miles does a 1998 Toyota 4Runner have?
I have a ’98 4-cyl. (2.7L 3RZ-FE) 4runner. I bought this 4runner from the first owner. it had 180,000 miles in it for 3,500 and boy did it run smooth. Before this, we used to have a the same ’98 4-cyl. model until it rolled over which was totaled (no injuries whatsoever).