HELP PLEASE?? CAR WONT START.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Jul 01, 2014 10:03 pm

ECU is very unlikely to blow the 100amp fuse - it would blow a 10amp fuse first.

Swap the ECU's back and before you go any further, take the main fuse box apart to check that's clean/dry inside, I suggest.

crigal.bb6 · Post by **crigal.bb6** » Wed Jul 02, 2014 12:41 pm

Doggo wrote:No idea about the codes, and I am thick when it come to mechanics, but surely if it turns over and you have a spark, the timing won't be wrong so it must be a lack of fuel? Can you hear the fuel pump prime? Is the fail safe relay a fuel or injector cutoff?

Excuse wild speculation, I am drunk. And useless at mechanics.

Good luck with it.

We are getting what feels like a pulse down the fuel line to the rail though. What else could I check to see if its getting fuel?

jonja · Post by **jonja** » Wed Jul 02, 2014 12:53 pm

if you are getting fuel, that leaves only to spark and timing

Post by **indigolemon** » Wed Jul 02, 2014 12:56 pm

Hang on, aren't the 5G ecu's linked to the immobiliser box? You'd need to swap that too for it to fire wouldn't you?

lxstuart · Post by **lxstuart** » Wed Jul 02, 2014 6:35 pm

Yes, or you might get away with having the keys from the other car near enough to the ignition barrel to fool the system into thinking the correct key for the ECU is in the ignition.

However....not sure if JDM models had the immobilizer gubbins.

mills · Post by **mills** » Wed Jul 02, 2014 7:19 pm

No immobilizer on Jdm 5th gens afaik

Post by **indigolemon** » Wed Jul 02, 2014 10:21 pm

Are both ECU's from JDM 5G's then?

crigal.bb6 · Post by **crigal.bb6** » Thu Jul 03, 2014 4:11 pm

indigolemon wrote:Hang on, aren't the 5G ecu's linked to the immobiliser box? You'd need to swap that too for it to fire wouldn't you?

correct.
Old ecu in starts fine

.
Thanks everyone for your help.