ok im asking this question for my friend, because he tried to ask the same question before and no one didnt help him so ne never been back on the form......... he has a 99 accord with a h22 swap. the problem that hes having is the {emoblelizer} i think that how u spell it. like if he want to go to odb1 ecu how in the hell do you bypass it because he has a jumper harness. in other word the chip in the key how do u bypass that. Come on now i know that there someone that know how to do.


And last question, he has coolent temp gauge problem the car can set over night but when u turn on the car the coolent temp gauge hand goes beyond the H and stay there.

 

From what I understand the immobilizer portion of the ECU needs to be desoldered. Maybe someone with more experience can help you.

 

yea i hope so, i going try to keep this topic alive

 

If he's going to run an OBD 1 ECU, he won't need to worry about the immobilizer. Only the 97+ ECUs have the immobilizer. OBD I ECUs are from '95 and older.

 

You can always stay with the obd2 ecu and just get the key reprogrammed to that ecu.

 

how and where?

 

so in other word, let say if he has a odb 1 gsr ecu the key will still work with that ecu.

 

Without an ECU that has the immobilizer, the chip inside the key will not do anything at all. With an OBD I ECU, there is no immobilizer system. Whether or not the key has a chip in it (or if it's programmed at all) will not matter.

If you want to get the key reprogrammed for the ECU, you need to bring both to the dealership. I don't know whether or not it needs to be already installed in the car though...

 

ok i think i see what your saying.......... even this isn't my car it sound like it is a pain in the *** to do but i'll give my friend his props for sticking with his car.no matter what if he has p28,p61, or p72 the key will not work unless he goes to the dealership to get the key reprogrammed, and if he has a odb2 prelude ecu he still have go to the dealership to get the key reprogrammed. i dont want to sound like a dumbass, but i want to make sure.

 

No no no.

If you get an OBD I ECU, just IGNORE the immobilizer system. Forget about it. You won't have to worry about it AT ALL.

With an OBD II ECU, you'll need to get the keys reprogrammed.

If you happen to get a 96 ECU, then you'll have a OBD II ECU that does NOT have the immobilzer system, and in which case you can IGNORE the fact that the key has a chip in it.

 

thanks for putting up with me and taking the time i really want to thank you for the help. im trying to call him as im typing. thanks once again.........

 

A little off subject, but I have a 97 cl 2.2 and it doesn't appear to have an immoblizer chip in the key. Key looks like a regular honda key, but with Acura on it.

 

The Acura CL didn't have the immobilizer system until 98, when they switched to the 2.3L motor.

 

cool, thanks for the info.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by philadd &raquo;</TD></TR><TR><TD CLASS="quote">The Acura CL didn't have the immobilizer system until 98, when they switched to the 2.3L motor.</TD></TR></TABLE>

Accord didn't get immobi. until '98 either.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by someone else &raquo;</TD></TR><TR><TD CLASS="quote">Accord didn't get immobi. until '98 either.</TD></TR></TABLE>

The OP was talking about the H22 ECU, which had the immobilizer since '97.

 

I understand your issue. I just got done with JDM H22a1 with p13 ecu in a 98 accord. It turns out that you don't have to worry at all like most people here are saying. Since P13 (OBD I) doesn't have immoblizer, just ignore it. I timed my car and pulled 14.97 with just a motor swap. Your friend will have fun with it. good luck

 

its simple:
the immobilizer is INSIDE the obd2 ecu.
the sensor for the key is on the ignition.
if you remove the obd2 ecu you just removed the immobilizer.
problem solved.