swap probs

[slay]

hey everybody.. new to the forum


i just swapped a 5efhe (its from japan so im guessing its the H motor) with 40 000k on it in to my 91 tercel


we used the 3ee ecu with the 3e fuel rail and injectors.. also added a new cold air intake


the problem is it runs alittle on the rich side.. actually alot.. 174 KM on a half tank of gas


any suggestions on what this could be? sometihng ecu related im guessing.. co2 sensor maybe.. i really dont know

[Galvatron]

I'm pretty sure you need the 5E-FHE ECU

Originally posted by slay
hey everybody.. new to the forum


i just swapped a 5efhe (its from japan so im guessing its the H motor) with 40 000k on it in to my 91 tercel


we used the 3ee ecu with the 3e fuel rail and injectors.. also added a new cold air intake


the problem is it runs alittle on the rich side.. actually alot.. 174 KM on a half tank of gas


any suggestions on what this could be? sometihng ecu related im guessing.. co2 sensor maybe.. i really dont know

[arknoid]

yeah ditto on what galv said, but hey man i wanna see ur car since this is a swap i was considering.

[slay]

the 5efHe ecu wouldnt run.. the sensors are all different.. the mech said it wouldnt even run with it


what i did was adjust my timing ALOT.. the car is really sluggish but it seems to be abit better on fuel


arknoid.. were are you exactly? i work down on norfinch... my car doesent look good but the motor is good

[AreSTG]

5efhe ecu will work with a custom wiring harness

[GT_REVVA]

Well, you don't really need the 5EFHE ECU to make the motor run. You need it to get all 110 horses though. If you're running it with any other ECU apart from the FHE unit, you'll need to run everything from your original motor i.e. if you're using a 3EE ECU to operate then, you'd need the 3EE injectors, throttle body and, a 5EFE distributor modded with one of the 3E plugs and, you're good to go. Same thing if you had a 5EFE before and intend on going FHE. If you're using aftermarket headers (like Pacesetters)make sure that when you install your 02 sensor, it protrudes into the exhaust stream. If it doesn't, then the ECU won't get a reading and, the car'll run rich. Do NOT try to use the 5EFHE injectors if you do not have the ECU to go with it.