94 prelude 2.3 4ws auto ecu problems/replacement PLEASE HELP

jakeebbon · Post by **jakeebbon** » Thu Aug 20, 2015 2:48 pm

my daily prelude has some ecu problems been going on for some time now looking to buy a new ecu obviously obd1 ive found an ecu on ebay that came off a jdm bb1. bloke thinks it'll be fine, but thought id run it past the great minds of lude generation before i go ahead and buy. Any other ideas of a replacement?

cheers jake

Post by **Merlin** » Thu Aug 20, 2015 2:58 pm

IMO you need to find a matching ECU ie one for a 2.3.

I wouldn't want to use a H22 ECU on an H23, especially a JDM H22 ECU.

Post by **Drax** » Thu Aug 20, 2015 3:10 pm

@Bri do you have an ecu for a 2.3?

jakeebbon · Post by **jakeebbon** » Thu Aug 20, 2015 4:11 pm

yeah that's what i was thinking but im kinda desperate now...

Post by **Merlin** » Thu Aug 20, 2015 4:54 pm

jakeebbon wrote:my daily prelude has some ecu problems

Out of interest what is the problem you are experiencing?

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Aug 20, 2015 5:04 pm

Yeah I would definitely avoid an h22 ecu and particularly a jdm one - the jdm ecu will be looking for a knock.sensor and.throw a fault all the time when.it doesn't see one

I think I know where there is an h23 auto in a breakers local to me that still had the ecu fitted last time I was there
I can go and check on Monday and pick it up to post to you if you want. PM me your budget so that I know for negotiations at the breakers, or alternatively your phone number if you'll be able to answer the phone and talk to me while I'm there.

jakeebbon · Post by **jakeebbon** » Thu Aug 20, 2015 6:14 pm

well im not 100% sold its the ecu now after reading loads of different posts...my lude decides to cut out at random times check engine light and flashing sport mode. after sitting for about 2 minutes it starts again. I thought it was overheating because my fan wasn't cutting in at half temp like it should..i sourced it to be the temp sensor so i ran a switch from the sensor into the cabin so i can control when the fan cuts in and out, i also pulled the ecu fuse in the fuse box out the no.10 fuse i read it resets the ecu just because i had my suspicions about the cutting out. After i did that i thought i had it sorted but today as i was travelling at speed it decided to die on me again.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Aug 20, 2015 6:24 pm

When it cuts out, does the dash go completely dead or does it stay lit?

jakeebbon · Post by **jakeebbon** » Thu Aug 20, 2015 6:34 pm

stays lit engine wont start for about 2 mins after taking the key out and trying to turn her over

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Thu Aug 20, 2015 6:49 pm

If the dash stays lit, then.it's probably not the ignition switch...

Have you swapped the main relay and/or distributor?