Corolla LSX Swap PCM Question
09-23-2015, 11:15 AM
#1
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Corolla LSX Swap PCM Question So I have two engines, one 24x reluctor iron 5.3 with a harness and PCM that is unassembled and one 58x reluctor 4.8 that is put together. The thing is, I only have a harness and PCM for the 5.3 I'm sure it won't work with the 4.8, but my question is the harness. Is there a difference between GEN III and GEN IV 4.8/5.3 engine harnesses? Is there any way to flash a PCM to work with a motor with a different reluctor wheel? I know I'm probably going to have to flash whatever ECU I use anyways.
09-24-2015, 07:25 PM
#3
So I have two engines, one 24x reluctor iron 5.3 with a harness and PCM that is unassembled and one 58x reluctor 4.8 that is put together. The thing is, I only have a harness and PCM for the 5.3 I'm sure it won't work with the 4.8, but my question is the harness. Is there a difference between GEN III and GEN IV 4.8/5.3 engine harnesses? Is there any way to flash a PCM to work with a motor with a different reluctor wheel? I know I'm probably going to have to flash whatever ECU I use anyways.
09-26-2015, 09:25 PM
#4
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Some differences... For sure, the 24x sensors run off 12v and the 58x sensors run off 5v. Cam and crank sensors are either different, in different locations, or both. One could be a cable drive throttle and the other DBW. The later engine may be DOD, VVT or both. Not sure if it's worth the hassle to re-pin the harness.
Andrew