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> ECU for a 7afe in a 5sfe 1996 manual celica
post Oct 21, 2016 - 4:49 PM
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thebestofall007

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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

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
- - Bitter   I was going to mention that the connectors may not...   Oct 23, 2016 - 10:59 AM
|- - thebestofall007   QUOTE (Bitter @ Oct 23, 2016 - 10:59...   Oct 23, 2016 - 2:04 PM
- - 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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