P72 OBD1, ECU check out?
#1
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P72 OBD1, ECU check out?
So I recently bought a 94 Integra GSR. B18C1 Vtec OBD1 5spd car.
Before I bought it, I noticed a wire cut from a harness. Asked a good friend of mine and he said it was a oil pressure wire and it's often cut and plugged when the ECU is chipped/modified.
Now that I got the original codes off the ECU (bad map sensor throwing codes for that, injectors and knock sensor) and fixed/cleared I get the solid no blink CEL when I scan. That is the only one that comes up.
I am now coming to you guys for help. Anyone super familiar with the P72 ECU may be able to spot any modifications but I am not sure what I am looking for.
I attached a photo of the ECU guts. If something seems modified it'd explain the ECU CEL, but the car did have a lot of water inside the trunk and carpets through out the entire interior. looking at the pins I need to clean a couple of them up before reinstalling anyhow.
Before I bought it, I noticed a wire cut from a harness. Asked a good friend of mine and he said it was a oil pressure wire and it's often cut and plugged when the ECU is chipped/modified.
Now that I got the original codes off the ECU (bad map sensor throwing codes for that, injectors and knock sensor) and fixed/cleared I get the solid no blink CEL when I scan. That is the only one that comes up.
I am now coming to you guys for help. Anyone super familiar with the P72 ECU may be able to spot any modifications but I am not sure what I am looking for.
I attached a photo of the ECU guts. If something seems modified it'd explain the ECU CEL, but the car did have a lot of water inside the trunk and carpets through out the entire interior. looking at the pins I need to clean a couple of them up before reinstalling anyhow.
#2
DO IT ON ALL FOURS
Re: P72 OBD1, ECU check out?
I am no pro ECU repair guy, but I can tell you with 100% certainty it's not chipped. It doesn't appear to have any capacitors leaking or anything burnt that I can see from the picture provided.
I would feel confident in saying that it is absolutely not common to cut the oil pressure sensor wire. At least I have never seen or heard of it. Sounds a lot more shady than anything.
I hate to say it, but it definitely sounds like you got a flood car that will always be riddled with problems. It may be better to just cut your losses, but obviously that choice is up to you.
I would feel confident in saying that it is absolutely not common to cut the oil pressure sensor wire. At least I have never seen or heard of it. Sounds a lot more shady than anything.
I hate to say it, but it definitely sounds like you got a flood car that will always be riddled with problems. It may be better to just cut your losses, but obviously that choice is up to you.
#3
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Re: P72 OBD1, ECU check out?
The car is not a daily driver and parked in my garage. Trying to build just a fun car to drive on the weekends and autox with.
but thanks.
but thanks.
#5
I'm Huge In Japan
Re: P72 OBD1, ECU check out?
you need to diagnose wiring, your ecu is fine. PS it's not chipped, that's a stock P72. by the sound of it, you're not getting power to the injectors from the yel/blk terminal block OR your main relay is bad. Also either your TPS and MAP sensors are plugged in backwards or you don't have a good ground on the thermostat. If there are ANY splices or exposed wires on the engine harness, I would strongly recommend NOT trying to **** with it and just buy one that isn't hacked up unless you enjoy spending endless hours learning Honda wiring from scratch.
#6
Re: P72 OBD1, ECU check out?
hi, i encounter solid cel no blink was when the ecu wasnt wired correctly. i have chipped a couple of p28 and p27 ecu which looks alot like the ecu that you have except that yours have a knock board. and it seems to me there is no modification done on that ecu. correct me if im wrong but i remember that solid cell comes out even if there is no ecu plugged in. you might also want to check your capacitors for leaks, using a cotton swab. thats how i discovered mine has started leaking.
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