2002 Toyota Corolla - Engine Swap

Look for disconnected, wrongly connected or loosely connected vacuum line

Thanks, I was going to have my son look at this but you confirmed my thoughts.

Was the swapped engine evaluated while in its original vehicle? I assume the engine is a used piece of equipment because for that car I would think a new replacement engine would be cost prohibitive over a new car. Engine swaps are a risky undertaking due to the fact that most cars, even from the same production year, can have huge differences due to differing dealer options, place of manufacture, and available parts at time of assembly. An experienced mechanic can usually re-rout, or bypass these stumbling blocks. But a mechanic not specialized in the particular model of car may have missed something simple like a vacuum hose, or may not have realized something as serious as a difference in Idle Air Control Valve construction. Another wonderful thing that swapping an engine does is force you to look at any and every component that was switched that might pertain to the problem. In this case that would seem to be the entire intake system, fuel system and as well under hood drivetrain (clutch, pilot bearing, transmission sensors, even brake booster hoses, etc.) I would recommend seeing how willing the said mechanic is to fix a problem he will have the most luck in identifying. As well a very scary possibility is that there may have been more than one computer control available for the car and you now have an A engine with a B computer.

Start with the Idle Air Control in my opinion no properly functioning one should allow an idle that high.

Good Luck

-T

Thanks, I will have the mechanic look into this.

Thanks for the help, it was the idle air control valve. Not cheap but the car runs great again.

This is the way most japanese cars run with the wrong spark plugs or wires ect.. A Mitsubihshi Eclipse 2002 has a distributor cap and rotor, these go bad bad and it does the same thing. The symptom you describe is the computer operating in safe mode when the ingition system is screwy so that you can still make the car move, it just doesn't move well.

Imposible to answer your question with so little dope.

Carburettor model might have idle-cut-off soleniod not working.. and because idling cicuit does not work, the idling was set at high speed. Worth a check.