 ECU for a 7afe in a 5sfe 1996 manual celica |
 Oct 21, 2016 - 4:49 PM
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Enthusiast Joined Oct 21, '16 Currently Offline Reputation: 0 (0%)  |
Hello all, I found a surprise in my 1996 Celica: It has an ECU for a 7afe manual transmission engine, however, mine is a 5sfe manual. The engine runs well, but gas mileage is not as good as it is supposed to despite replacing the cap, rotor, plugs, wires, and I get a P0141 code despite replacing the O2 sensor with an OEM Denso and checking the wiring connection between the sensor and the computer. The cables don't appear to be all spliced up, either.
Why would someone do this, and what would I have to do to replace it with the original (if this would fix the gas mileage and sensor issues)? This post has been edited by thebestofall007: Oct 21, 2016 - 5:00 PM |
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Oct 23, 2016 - 10:59 AM
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Enthusiast  Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
I was going to mention that the connectors may not be the same but I didn't feel like putting in the effort to confirm it.
You're sure it's a 5S under the hood right? Weird things happen.... -------------------- |
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Oct 23, 2016 - 2:04 PM
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Enthusiast Joined Oct 21, '16 Currently Offline Reputation: 0 (0%) |
QUOTE (Bitter @ Oct 23, 2016 - 10:59 AM)  I was going to mention that the connectors may not be the same but I didn't feel like putting in the effort to confirm it. You're sure it's a 5S under the hood right? Weird things happen.... The previous owner had the original 5sfe throw a connecting rod when I first got the vehicle and I had to replace it with another 5sfe. I did not know about the mismatch with the numbers on the ECU at that time. |
Posts in this topic
thebestofall007 ECU for a 7afe in a 5sfe 1996 manual celica Oct 21, 2016 - 4:49 PM
mkernz22 You'd just have to unplug the old one, take it... Oct 21, 2016 - 5:05 PM
thebestofall007 QUOTE (mkernz22 @ Oct 21, 2016 - 5:0... Oct 21, 2016 - 5:19 PM Bitter I'm shocked a 7A ECU would run a 5S at all let... Oct 22, 2016 - 8:26 AM thebestofall007 QUOTE (Bitter @ Oct 22, 2016 - 8:26 ... Oct 22, 2016 - 6:48 PM VavAlephVav Yeah, I'm surprised it works I'd guess it ... Oct 22, 2016 - 6:47 PM thebestofall007 QUOTE (VavAlephVav @ Oct 22, 2016 - 6... Oct 22, 2016 - 6:50 PM slavie If I were you, I'd check the pinouts of 5S and... Oct 22, 2016 - 7:22 PM thebestofall007 QUOTE (slavie @ Oct 22, 2016 - 7:22 ... Oct 25, 2016 - 4:22 PM thebestofall007 I did some looking at the wiring schematics of one... Oct 23, 2016 - 8:25 AM mkernz22 I agree, get us some pictures so we know what we... Oct 23, 2016 - 3:02 PM thebestofall007 QUOTE (mkernz22 @ Oct 23, 2016 - 3:0... Oct 25, 2016 - 1:46 PM slavie If it's a 97, you can hook it up to your lapto... Oct 27, 2016 - 5:32 PM thebestofall007 QUOTE (slavie @ Oct 27, 2016 - 5:32 ... Oct 27, 2016 - 11:42 PM VavAlephVav You can get the USB to ODBII cable on ebay pretty ... Oct 28, 2016 - 8:03 AM thebestofall007 I just noticed something regarding the P0141 code ... Nov 2, 2016 - 6:48 PM Bitter That's quite possible. You'd need to check... Nov 2, 2016 - 7:09 PM thebestofall007 QUOTE (Bitter @ Nov 2, 2016 - 7:09 P... Nov 2, 2016 - 8:19 PM |
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