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90 hatch, dpfi, solid cel, details inside

Old 09-15-2005, 03:50 AM
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Default 90 hatch, dpfi, solid cel, details inside

i have a 90 hatch with dpfi

the fuel pump is hot wired to a switch, the cel comes on right when i turn the key (power on before the starter switch)

i tried to bump start it by towing it for 2 blocks in first gear but it just wouldnt go on its own.

my buddies 91 dpfi hatch was there so i swapped ecu's to check it and his lit up with a solid cel in my car, but both ecu's worked fine on his car.

any ideas would help me greatly. thanks guys.
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Old 09-15-2005, 03:43 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

Weird...both ECUs light up solid in your car but are fine in his.

I'm not sure what to tell you...
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Old 09-15-2005, 05:01 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

grounds?
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Old 09-15-2005, 06:03 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

checked them all. i have the dash pulled now and am hunting with the manual and multimeter.
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Old 09-15-2005, 07:36 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

Let the fun begin Good luck man. Hunting down problems like that is alway's an adventure.
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Old 09-15-2005, 07:52 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

ok, i fixed the solid cel. the negative battery terminal was missing the smaller chassis ground. i ghetto'd one up real fast and no more solid cel. no codes at all, but my ---- still wont start. gonna try towing it in first again
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Old 09-15-2005, 08:27 PM
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Default Re: 90 hatch, dpfi, solid cel, details inside

do i get free knuckles now? :P
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Old 09-17-2005, 12:54 AM
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Default Re: 90 hatch, dpfi, solid cel, details inside

im still getting a solid cel when the fuel pump is off, but i get no codes when the fuel pump is on, so i tried to bump start it again with no codes, fuel pump on and i still have a car that doesnt run. i'm about to just sell this as a shell... ----. *any ideas guys? im out of them atm. thanks.
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Old 09-17-2005, 01:54 AM
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Default Re: 90 hatch, dpfi, solid cel, details inside

if the car doesnt crank check ur main relay
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Old 09-18-2005, 06:04 AM
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Default Re: 90 hatch, dpfi, solid cel, details inside

who ever had the car before me pretended to be a wireing master. already had the dash pulled so i pulled the heater core all air ducts and sound deadening material i found like 3 wires worn and just twisted together. i soldered them all up and i resoldered everything in 3 of the main relays that i have. im still stranded... ill keep y'all updated though
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