AboutTed Ritter Expertise I have more than 26 years experience as toyota technician, I will be able to answer most questions related to the toyota product line up to the present year models, I specialize in difficult to diagnose problems but when posting a question please keep in mind that some situations require the used of special test equipment and diagnostic procedures especially as the newer models become more technologically advanced, so without actually having the car on hand I may only be able to try to steer you in the right direction and in some cases may have to refer you to the toyota dealer but at least you will know what you may be dealing with. Please don't hesitate to ask any questions, I will have an answer for you in most cases. When posting a question keep in mind that I reside in the US, although I get questions from all over the world I may not have an answer for models that are not sold in the US, I will do a reasonable search to try to match your model to the US model,please refrain from asking about diesel powered vehicles, I have no information for them. In most cases I will not answer questions about major modifications of OEM components, engine swapping or aftermarket products,please post a question not a statement, please provide enough basic information such as year, model, what engine and if anything has already been done to fix the problem, the more information I get the more I can help without having to ask you more questions.
Experience Toyota technician since 1979,expert in electrical systems,OBD systems,engine repair, driveability problems,EFI systems,ASE certified,Toyota master technician. Certified Hybrid Vehicle technician.
Education/Credentials Toyota master technician, ASE certified in eight catagories, Hybrid vehicle certified.
Question I have just replaced the engine in a 1996 Toyota T100. It is a 3.4 engine. I replaced it with a 1997 4-Runner 3.4 engine.I kept the 96 plenum and put it on the 97 engine. with a few other pieces that were swapped. It starts and runs fine and even drives good. But it idles at about 1800 rpm. Also when I have it in park and press the gas pedal and slowly increase the rpm when it reaches 2500 and I hold it there it will run up to 3500 and then drop back to 2000 repeatedly. My repair Manuel say that the idle isn,t adjustable and that the ECM controls it. Is there maybe a sensor or something that I have missed in the change over or am I going to have to take it to a shop and get it checked on a computer to get it adjusted.
Answer I don't think the computer part numbers are the same for the 4- Runner and the T-100 and that's where the problem may be, is there a way you can check the part numbers of the computers, if not contact the toyota dealer parts department and ask them for the computer part numbers for both of the vehicles if they are the same then there's no problem but if not I would suspect that this is where the problem lies.
