car wont turn over with f20b pcb ecu
12-15-2011, 05:01 PM
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car wont turn over with f20b pcb ecu
i have a 97 accord lx..swaped the motor in our selfs and sent it to a shop out in whittier ca to do all the wiring...i found out that the f20b ecu (pcb) i got wont let the car start. after plugin in the poj ecu the stock ecu it start and runs but of course with out vtec now whats makin it harder is my car is auto so if somebody ran into this same situation..can u tell whats happin and if i can the pcb chipped or something..where i can get it done?... or what ecu will work any help is much appreciated
12-15-2011, 06:21 PM
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Re: car wont turn over with f20b pcb ecu
Did they leave the injector resistor in place? If they did leave the resistor, only 7 volts will be applied to the injectors. The F20b injectors need 12 volts to energize.
12-15-2011, 08:54 PM
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Re: car wont turn over with f20b pcb ecu
im pretty sure it was in. but the thing is it started right away with the poj ecu right after we found out the jdm ecu didnt turn it, so i really dont think that is it
12-15-2011, 09:28 PM
#4
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Re: car wont turn over with f20b pcb ecu
I believe that F20B ECU's got a Immobilizer that keeps it from starting. Doesn't match the key it's looking for; therefore, it won't start. I say convert it to OBD1 and run a chipped ECU then get it tuned to run at it's best.
12-16-2011, 12:27 PM
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Re: car wont turn over with f20b pcb ecu
Time to do it right and get Hondata S300 and tune it to your mods.
12-16-2011, 12:44 PM
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Re: car wont turn over with f20b pcb ecu
The resistor box lowers the current to the injector coils not the voltage. The injector coils in a peak and hold circuit (resistor box) still see battery voltage (11v-15v).
12-17-2011, 12:56 PM
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Re: car wont turn over with f20b pcb ecu
yea its not the battery i just bought it like 4 months ago from honda so i doubt ita the voltage..i called a guy from rywire and he said that the ecu i have should not have a immoblizier unless it a ecu thhats 98 and up is there a way to check what year the ecu is from
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12-17-2011, 02:21 PM
#8
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Re: car wont turn over with f20b pcb ecu
AFAIK the 97-01 PCB F20B ECU is OBD2 and it does have an immobilizer. To find out you can open up the ECU case and look for the IMMO board. It should look something like this.
12-18-2011, 07:26 PM
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Re: car wont turn over with f20b pcb ecu
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12-18-2011, 07:49 PM
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Re: car wont turn over with f20b pcb ecu
now there is something else i found out there is a chip of some sort that "blocks" the immobilizer. should i give this a try ... i kno i still would have to get the jumper harness.. i will be attempting this my self so any site refrence or thread will be appreciated
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