The racing up and down at idle is call enging loping, usually caused by a vacuum leak. It could also be caused by a sticking choke at the carb. Whatever the case may be, you will need to start by hooking up a smoke machine to find the source of the leak. Also check your coolant level.
my 1991 Toyota 4x4 22re had the same race up and down idle. it was a low coolant level.
2jz swap, hands down the best choice.
A compression check and cylinder leak-down test should tell you the condition of your engine.
you have to separate engine and transmission
when the engine weres down
Becuase you're revving the engine. Becuase you're revving the engine.
Follow the positive battery cable down to the engine. It is bolted to the starter.
What causes a 1998 Pontiac transport to run hot and engine shuts off
when the engine dies
Could be caused by load placed on engine by A/C compressor
Remove the negative battery cable. Follow the posative cable down to the starter. remove the wires then the bolts holding it to the engine. Label the wires to make sure they go back where they came from.
Either a faulty engine temperature sensor or the wiring to it.
It is on the right-hand (passenger side) of the engine block about half way down.
Check out this link http://www.4wheelnoffroad.com/ Scroll down on left side to technical, then scroll down to engine rebuild Good Luck
The most common cause of engine surging (rev up and down) is a dirty air filter.
The engine is not running!
It's down on the side of the driver's side engine compartment.
Follow the top radiator hose down to the water outlet on the engine; the stat is in there.
On my 2008 Highlander, I started the engine and set the odometer to trip A. Shut off engine and restart while holding down the odometer button.
On my 92 Toyota Pickup V6 4X4, it is located in a different section than on the 4cyl. If you are looking straight at the engine, look to your right and down into the engine. Look for the LOWER radiator hose and follow it into the engine block. Romove the housing and this is where the thermostat on my truck was located
Revving up and down is usually a symptom of a dirty air filter.
you unbolt the rear of the subframe andlet it down enough to take out the rear engine mount
Flushing sludge from your engine is not a very smart thing to do. Almost every automotive technician will agree with that. Flushing out an engine causes all the sludge to drain down into the oil pan. Which in turn tends to plug up the oil pick up and causes engine damage.
Just scroll down to the "Related Links" Part of the page to see a link!
The governor spring adjustments