Another MPFI debacle
Thread Starter
eh, such as life
Joined: May 2006
Posts: 1,331
Likes: 0
Another MPFI debacle
Well sorry to say but I have a problem with my DPFI to MPFI swap.
DX,STD (DPFI) -> Si,HX (MPFI) wiring
http://www.50mod.com/fourthgenhatch/mpfi.html
DPFI TO MPFI
CRX tech pages
FourthGenHatch
These are the websites that I used for reference. yes all of them.
I have quadro checked my wiring and still my 90 wagon is in limp mode.
This is what I'm working with.
90 LS throttle body, 93 Z6 Intake manifold, 90 LS resistor box, 90 LS injectors, 90 LS OBD-0 PR4 ECU. It's a 5 speed if that matters. I was using an A6 dizzy that I was borrowing from DRMORTY from the CIVIC CRX DEPOT[shameless plug]
At first -
The wagon will crank up and run. If I rev it up slowly it will rev up to 3k to 3200 and thats it.
Now -
I made a OBD-0 to OBD-1 Distributor jumper harness.
The dizzy I am using now is a SOHC 1,5 dx dizzy. My Wagon still will only rev up between 3k and 3200 just as before, but it seems to rev up faster and seems stronger than before.
I know it's in limp mode, 99% sure my wiring is on time, every connection was soldered and taped [didn't have heat shrink] I did swap my TPS wires.
I tried the map sensor I got from the Z6 IM - no difference
I tried swapping around the wires from C1 and C2 on the ECU just to see if maybe I mixed them up - no difference
I really don't know what else to do.
Can someone please help?
Thanks TR
DX,STD (DPFI) -> Si,HX (MPFI) wiring
http://www.50mod.com/fourthgenhatch/mpfi.html
DPFI TO MPFI
CRX tech pages
FourthGenHatch
These are the websites that I used for reference. yes all of them.
I have quadro checked my wiring and still my 90 wagon is in limp mode.
This is what I'm working with.
90 LS throttle body, 93 Z6 Intake manifold, 90 LS resistor box, 90 LS injectors, 90 LS OBD-0 PR4 ECU. It's a 5 speed if that matters. I was using an A6 dizzy that I was borrowing from DRMORTY from the CIVIC CRX DEPOT[shameless plug]
At first -
The wagon will crank up and run. If I rev it up slowly it will rev up to 3k to 3200 and thats it.
Now -
I made a OBD-0 to OBD-1 Distributor jumper harness.
The dizzy I am using now is a SOHC 1,5 dx dizzy. My Wagon still will only rev up between 3k and 3200 just as before, but it seems to rev up faster and seems stronger than before.
I know it's in limp mode, 99% sure my wiring is on time, every connection was soldered and taped [didn't have heat shrink] I did swap my TPS wires.
I tried the map sensor I got from the Z6 IM - no difference
I tried swapping around the wires from C1 and C2 on the ECU just to see if maybe I mixed them up - no difference
I really don't know what else to do.
Can someone please help?
Thanks TR
Last edited by Da1andonlyJinx; Mar 23, 2009 at 08:55 AM.
Trialed for Treason
Joined: Jun 2001
Posts: 373
Likes: 0
no ....cannot use OBD1 distributor with OBD0 pcm. OBD0 distributor has different number of pulses inside distributor and different resistance requirements.
MPFI swap isn't bad...did onr\e on w\my EF wagon forever ago.
MPFI swap isn't bad...did onr\e on w\my EF wagon forever ago.
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Liar, you couldn't cut me deeper with a knife if you tried
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Thread Starter
eh, such as life
Joined: May 2006
Posts: 1,331
Likes: 0
Hawtness, trying to source an A6 dizzy now but to no avail.
