obd-0 dpfi => obd-1 mpfi
03-15-2006, 10:56 AM
#11
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Join Date: Jul 2003
Posts: 82
Re: obd-0 dpfi => obd-1 mpfi
Damn, I can't get this car to start..
i have swapped the engine, and done the dpfi to mpfi conversion and the obd-0 to obd-1 conversion. I have checked every wire and it's all fine..
But I get a solid CEL (when i turn the igintion on, the CEL stays on. I have not connected the jumper wire). I have tried three diffrent obd1 ecu's, but that did not help, but if I remove the obd0 to obd1 conversion harness and but in the old obd0 ecu the CEL goes away..
But I have one question..
Is it normal that the fuel injectors have constant earth and gets 12v+ from the ecu? I thought it was the other way around..?
i have swapped the engine, and done the dpfi to mpfi conversion and the obd-0 to obd-1 conversion. I have checked every wire and it's all fine..
But I get a solid CEL (when i turn the igintion on, the CEL stays on. I have not connected the jumper wire). I have tried three diffrent obd1 ecu's, but that did not help, but if I remove the obd0 to obd1 conversion harness and but in the old obd0 ecu the CEL goes away..
But I have one question..
Is it normal that the fuel injectors have constant earth and gets 12v+ from the ecu? I thought it was the other way around..?
03-16-2006, 02:28 AM
#13
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Join Date: Jul 2003
Posts: 82
Re: obd-0 dpfi => obd-1 mpfi
I know, and i have read it, but it did not help me alot..
But i think the reason i get the solid CEL is becouse normal obd0 cars have the CEL on the ecu, but these EDM 92-95 obd0 cars have it in the instrument, just like obd1. And that is why the conversion harness ***** it up..
But i still think it is wierd that the injectors have contstant ground, and gets 12v+ from the ecu. All the work shop manuals I have read say it's the other way around, both on obd0 and obd1. But I can't find any chematics of obd0 DPFI enigines, just obd0 MPFI..
So if anyone have wiering schematics for obd0 DPFI, please let me know..
But i think the reason i get the solid CEL is becouse normal obd0 cars have the CEL on the ecu, but these EDM 92-95 obd0 cars have it in the instrument, just like obd1. And that is why the conversion harness ***** it up..
But i still think it is wierd that the injectors have contstant ground, and gets 12v+ from the ecu. All the work shop manuals I have read say it's the other way around, both on obd0 and obd1. But I can't find any chematics of obd0 DPFI enigines, just obd0 MPFI..
So if anyone have wiering schematics for obd0 DPFI, please let me know..
03-16-2006, 03:39 AM
#15
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Join Date: Feb 2005
Posts: 0
Re: obd-0 dpfi => obd-1 mpfi
Originally Posted by eDm-cRxXx
I know, and i have read it, but it did not help me alot..
But i think the reason i get the solid CEL is becouse normal obd0 cars have the CEL on the ecu, but these EDM 92-95 obd0 cars have it in the instrument, just like obd1. And that is why the conversion harness ***** it up..
But i still think it is wierd that the injectors have contstant ground, and gets 12v+ from the ecu. All the work shop manuals I have read say it's the other way around, both on obd0 and obd1. But I can't find any chematics of obd0 DPFI enigines, just obd0 MPFI..
So if anyone have wiering schematics for obd0 DPFI, please let me know..
But i think the reason i get the solid CEL is becouse normal obd0 cars have the CEL on the ecu, but these EDM 92-95 obd0 cars have it in the instrument, just like obd1. And that is why the conversion harness ***** it up..
But i still think it is wierd that the injectors have contstant ground, and gets 12v+ from the ecu. All the work shop manuals I have read say it's the other way around, both on obd0 and obd1. But I can't find any chematics of obd0 DPFI enigines, just obd0 MPFI..
So if anyone have wiering schematics for obd0 DPFI, please let me know..
03-20-2006, 04:56 AM
#19
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Join Date: Jul 2003
Posts: 82
Re: obd-0 dpfi => obd-1 mpfi
yes, the obd0 -> obd1 conversion harness is for usdm cars..
i think the only differense is that edm 92-95 obd0 cars don't have the CEL on the ecu, you jump a connector and the engine light flashes, just like on obd1 cars..
yes I have a PM7 ECU, but I have not tried it on this car, and I don't se any reson to do that..
i think the only differense is that edm 92-95 obd0 cars don't have the CEL on the ecu, you jump a connector and the engine light flashes, just like on obd1 cars..
yes I have a PM7 ECU, but I have not tried it on this car, and I don't se any reson to do that..
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