When you start the motor, and it's cold the fan clutch will make something like the noise you describe, until the rpms reach a point at which it disengages and freewheels along (it only works below 2200 rpm or so). How long the motor will remain at fast idle is something that the coolant temperature sensor will determine, so you could have a problem there and the symptom be an unusually long time at 1500-1800 rpm fast idle. Ben There is a common condition where the 1FZFE motor will idle too high during warm up. The fast idle speed seems to vary from vehicle to vehicle, and is usually somewhere between 1,200 and 2,000 rev/min. It is controlled by the ISC (idle speed control) valve. This valve is simply a device which allows more or less air (as determined by ECU) to bypass the throttle butterfly, and thus affect idle speed. In other words; without the throttle butterfly being opened by the driver, the ECU will allow more air to bypass for an increase in idle speed, or less air to bypass for a reduction in idle speed. On cold start, sensors seeing low temperature cause the ECU to open the ISC valve fully. "Excessive" cold start idle speed can be reduced by "fiddling" with the ISC valve to shorten it's stroke. For a full write-up of the modification, including high resolution photographs, go to http://tinyurl.com/2jcrlk. Dave
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It is about 190 f.
Clogged filter, low oil, thin oil, worn out engine.
You can find an engine diagram in your owners manual for your 1997 4 cylinder Jeep Wrangler. If you no longer have a copy of your owners manual, you can contact Jeep, and they will send you a new one.
If you ran it out of oil, you may have locked up the engine. It needs oil for lubrication. No oil...no engine.
2.4L inline 4 cylinder
They had a 2.4L 4 cylinder engine.
2.4 L, 4 cylinder, 150 HP.
There are a number of reasons why a 1991 Toyota Corolla engine would stop running after startup. It could the idle control, an EGR leak, or low fuel pressure.Ê
Many engines have an automatic shut off when the engine becomes too hot. Once the engine cools down it may also be equipped with an automatic startup.
Should be at least 125 psi, with all 25 percent of each other.
A 2001 PT Cruiser will get around 20 mpg in the city and 26 mpg on the highway. The PT Cruiser has a 4 cylinder, 2.4 liter engine and takes regular gasoline.
HZJ80 is the engine type... I have a 92 land cruiser GX and it has got that number on the plate.. It's the 6 cylinder in ligne, 4.2 liter engine code.. Cheers!
1999 Toyota camery 4 cyl leaks oil when engine running
You can find a good PT Cruiser Engine online or through your a PT Cruiser dealership.
Loss of coolant with no apparent leak, engine overheating, white smoke from the exhaust (especially at startup), oil level overfull, a white foamy substance on the underside of the oil fill cap, air bubbles escaping from the radiator, engine running, cap off, & possible engine miss.
The issue here sounds like it's the master cylinder failing. It is not retaining pressure when the engine is running. The reason they feel fine when the engine is not running is because the failing master cylinder is not getting power, and in essence is being bypassed.