PR3 obdo ecu causing problems/PR4 works???
Thread Starter
Joined: Jan 2003
Posts: 120
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From: alma, mi, usa
PR3 obdo ecu causing problems/PR4 works???
ok,
i got a 90 crx b16swapped obdo, when i use a pr3 ecu my main
relay "clicks" and then my car cuts out for like 1/2 second, all the time.
so i temp. put a pr4 ecu in it just to drive , drove it for 3 weeks no problem, today i got my new pr3, put it in and with in 4 minutes
the relay clicks and car cuts out.
??????????????
any ideas at all?
i have replaced the main relay 2 times, fuel pump, cap ignition coil, wires
,plugs, grounded all grounds.
i dont have a clue now????
thanks
oh yeah when the pr3 check engine light comes on, the light on the ecu stays solid?
i got a 90 crx b16swapped obdo, when i use a pr3 ecu my main
relay "clicks" and then my car cuts out for like 1/2 second, all the time.
so i temp. put a pr4 ecu in it just to drive , drove it for 3 weeks no problem, today i got my new pr3, put it in and with in 4 minutes
the relay clicks and car cuts out.
??????????????
any ideas at all?
i have replaced the main relay 2 times, fuel pump, cap ignition coil, wires
,plugs, grounded all grounds.
i dont have a clue now????
thanks
oh yeah when the pr3 check engine light comes on, the light on the ecu stays solid?
Honda-Tech Member
Joined: Apr 2003
Posts: 5,365
Likes: 2
From: 60ft garage, CA, USA
Re: PR3 obdo ecu causing problems/PR4 works??? (jondancer)
Thats funny. I guess i would take the cover off the ecu and see if u can see any burned areas. You can even smell it to see if its toast. I have never heard of this problem...
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Joined: Sep 2003
Posts: 3,443
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From: San Fernando, Kali, usa
Re: PR3 obdo ecu causing problems/PR4 works??? (fourthgenhatchB17)
neither have I am well only well a chip I had a problem with the check engine light flashing but not like this
I would think maybe something to do with the fuel injection??
or vtec
but that is werd
as they both are dohc ecu's
expect that one is for vtec and red lines at 8200 rpm
damm
someone helps this guy out
really werd
I would think maybe something to do with the fuel injection??
or vtec
but that is werd
as they both are dohc ecu's
expect that one is for vtec and red lines at 8200 rpm
damm
someone helps this guy out
really werd
Honda-Tech Member
Joined: Aug 2003
Posts: 1,265
Likes: 0
From: Right Coast
Re: (jondancer)
Just hook everything up like you normally would. It's pretty straight forward, I personally never used a switch but I i'm sure it cant be hard. Do you have a V-afc or Fields? Just hook it up and you should be good to go.
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Joined: Jan 2005
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From: madison, wi, usa
Re: PR3 obdo ecu causing problems/PR4 works??? (jondancer)
Im havin a similiar prob with a pr3 from a JDM Xsi B16 swap for a DA teg. Mine doesnt completely cut out but it is throwin codes. I checked my wiring and there was a mistake and even after it got fixed it still runs like a pile. I guess im gonna have to try chippin it and seeing where i get with that. ? 
? 
?
? ?
Honda-Tech Member
Joined: Apr 2003
Posts: 9,041
Likes: 0
From: San Diego
it sounds like the ecu is faulty, OR some clown tried to chip the ecu's and just screwed everything up...
try to get a ECU from a working car, thats the onyl way to tell...
but from what u say the PR4 runs fine, ur ECU is toast...
i have a chipped (working
)PW0 if ur interested, PM me
try to get a ECU from a working car, thats the onyl way to tell...
but from what u say the PR4 runs fine, ur ECU is toast...
i have a chipped (working
)PW0 if ur interested, PM me
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