Fodo needs some help

Post by **budget_crx** » Mon Jan 22, 2007 4:14 am

Ok, well you all know that my DD has a DOHC ZC instead of its old DPFI D15 now. but its still not running right a month after the swap. keep in mind that the swap required a DPFI to MPFI conversion and that the DOHC ZC has an external cam position sensor (cps) on the exhaust cam. PG7 ECU is being used
Here is what wrong:
-The car starts and runs with a idle of about 400RPMs
-When driving the car has absolutely NO power
-the ECU code that flashes is no. 4 (Crank angle Sensor)

When we have had time, Andyjt and I have worked on this thing to try and getting it going, here is what we have done so far:
-Redid the wiring from the distributor to the ECU, re soldered everything, so all the connections are strong
-checked to make sure the distributor wires were in the correct position (B10 & B12) we checked numurous times, everything was correct
-measured resistance in the CPS, everything checked out fine
-measured resistance on the crank angle sensor in the distributor, everything checked out fine
-tried a PM6 ECU instead of the PG7, nothing changed
-swapped in a perfect working distributor from the CRX, nothing changed
-swapped in a perfect working cps from the CRX, nothing changed

The car is still flashing the ECU code and is still running like crap. does anybody have any ideas on what it could be? I have run out of ideas to try and I need to get this car running, its been down for way to long. thanks in advance for the help.

mike · Post by **mike** » Mon Jan 22, 2007 4:24 am

:sadpandaface:

Post by **stolle** » Mon Jan 22, 2007 4:28 am

whats your timing set at? does it hit the fuel cut at 4-5k rpm? have you tryed running just two new wires for the crank angle sensor, does the crank angle sensor have to be installed a certain way? is it wrong? did you ring out your connections with a multimeter to make sure they go to the right pin on the ecu plug? if you need me to i can come by and take a look :dunno:

Post by **budget_crx** » Mon Jan 22, 2007 4:34 am

stolle;15260 wrote:whats your timing set at? does it hit the fuel cut at 4-5k rpm? have you tryed running just two new wires for the crank angle sensor, does the crank angle sensor have to be installed a certain way? is it wrong? did you ring out your connections with a multimeter to make sure they go to the right pin on the ecu plug? if you need me to i can come by and take a look :dunno:

-timing with the old distibutor was whatever Chris was running in his car, with the new distributor I didnt check, just installed it to see if it would help
-I honestly don't know, i have taken it up that high yet
-yes, they go straight from the sensor to the ECU
-it does, but it is installed correctly
-the plugs go to the right ECU pins, andy checked it over and over using both the hasport, Chilton's and the factory Honda wiring diagrams as references

I dunno either, ill give you a call soon

TurboFreak · Post by **TurboFreak** » Mon Jan 22, 2007 7:45 pm

sounds like a wiring problem try cross checking your wires with this
http://hondaswap.com/swap-articles/dpfi-mpfi-writeup-49557/
i hope this helps

edit: some of my buddies did some swaps over to mpfi and they said theres a couple wires that you gotta put in a different spot other than what the manuals show you...i think he said its 1 or 2 wires that gotta be switched but dont hold me to that

Post by **budget_crx** » Mon Jan 22, 2007 9:13 pm

TurboFreak;15492 wrote:sounds like a wiring problem try cross checking your wires with this
http://hondaswap.com/swap-articles/dpfi-mpfi-writeup-49557/
i hope this helps

edit: some of my buddies did some swaps over to mpfi and they said theres a couple wires that you gotta put in a different spot other than what the manuals show you...i think he said its 1 or 2 wires that gotta be switched but dont hold me to that

thanks, the TPS wires need to be switched, maybe thats what you're friends were talking about :dunno:

I also have a spare ZC distributor harness that can be installed if i had some more plugs, this is the one right here :http://rywire.com/store/dohc-distributo ... d92788783d

andyjt · Post by **andyjt** » Tue Jan 23, 2007 4:33 pm

TurboFreak;15492 wrote:sounds like a wiring problem try cross checking your wires with this
http://hondaswap.com/swap-articles/dpfi-mpfi-writeup-49557/
i hope this helps

edit: some of my buddies did some swaps over to mpfi and they said theres a couple wires that you gotta put in a different spot other than what the manuals show you...i think he said its 1 or 2 wires that gotta be switched but dont hold me to that

TPS wires were switched.

Wired Cyl sensor to pins C1 and C2
-Wire goes from cyl sensor in Dist. Directly to ECU.

Moved crank sensor wires from C1/C2 to b10/b12.
--Wired crank sensor on exhaust cam to pins stock wiring harness pins by distributor plug.

Post by **budget_crx** » Wed Jan 24, 2007 11:12 pm

anyone else have any ideas??? I need this car running so we can get it out of the way and finish the paintbooth. please help!

andyjt · Post by **andyjt** » Wed Feb 07, 2007 3:59 pm

bump....anyone have ideas??

Jake i will be free thursday if you want to catch up on it.

Post by **budget_crx** » Wed Feb 07, 2007 4:43 pm

that works, ill push it back across the street and get the heater ready