Rb25det Wont Start

[LINCNDLOZ]

need sum help guys i done a rb25 conversion got the engine to run pulled it out and painted my car. i refitted the 25 and it just cranks over and ive got no spark or injector pulse. ive tried different cas, ecus and replaced the ignitor module. ive check continuity on all the ecu pin outs. ive check every sensor for power and earth and still not a thing any ideas? its starting to really shit me

[tridentt150v]

Are you getting power anywhere?

[LINCNDLOZ]

Yeah mate everything is getting power and a good earth

[paulr33]

wire in the consult port and run std ecu diags

[116.hks]

if you are getting power to the injectors and coils i'd be making sure a pin hasn't backed out of a plug somwhere. other then that you've replaced everything that could cause it. double check all the power supplies at your computer again and check if you are getting a pulse on the injector outputs.

[LINCNDLOZ]

havent wired in consult to check diagnostics dont know how. but i have check every connector and power at coils nd injectors and thats fine. cas is sending a pulse to the ecu but it just dosent want to give spark or injector pulse in about ready to burn it lol

[LINCNDLOZ]

anyone else come across this problem?

[MBS206]

Unplug EVERYTHING (and I mean EVERYTHING)

THEN, Plug it all back in.

Seriously, don't just do one or two plugs, do EVERY SINGLE plug.

You'll find you've left one plug out, or a relay out, or a fuse.

When you redo it, it'll all be sweet.

[Haines]

mine wouldnt start the other night

it was just a fuse

have you checked the fuses (I did but missed the blown one the first time)

there are two called engine cont check them if you havent already

[LINCNDLOZ]

I have check all fuses and power to all sensors etc and check all earths

[blind_elk]

How many volts are being supplied to the ECU while you are cranking the engine?

[LINCNDLOZ]

Ive got 12v at all relevent pins at the ecu while cranking

[LINCNDLOZ]

Any one else had this problem?

[LINCNDLOZ]

Can some give me anymore ideas ive run out of ideas everything seems to check out fine?

[Darius]

I had the exact same symptomes as you except my car left me stranded 2 hours from home. Parked it and it wouldn't start. It would crank and crank, but not even a sputter. My MAF was working properly and I was getting fuel because I could smell it. After checking every plug, nothing got it to work. I replaced the ignitor module with a known good one, still didn't fire at all. Went to check for spark and as we were checking, for spark with 3 of the coils pulled and the other 3 on the engine, the engine tried to start with 3 cylinders firing and the one plug out was sparking too. Turned out that somehow the power was getting grounded before the coils or wasn't getting grounded at all. After inspection, I still couldn't find anything wrong with the coilpack harness, but it started up and drove all the way home without issue. Totally pissed me off mostly because there was "nothing wrong". Readjust the coilpack harness and confirm the ground loop on the rear coilpack assembly bolt. At least it's free!

Edited September 8, 2008 by Darius

[nizmokid]

change the spark plugs!....over fueled plugs wont fire, the porcerline on the plug need to be hit with a oxy flame to burn off the excess fuel......just throw that into the mix.

Thats what stopped me starting my car!

[sl33py]

Yehaa maybe what nizmokid said. I had this happen to me after the car was sitting in a panel beaters for 3 weeks. Failing that, it's called an auto-electrician

[LINCNDLOZ]

thanks for the info guys but its not the problem im not even getting a signal to the amplifier. auto elec wont even look at it

[The Dan]

Ive got 12v at all relevent pins at the ecu while cranking

I don't believe you have checked this correctly. 12V is too high to have while cranking

[R34GTFOUR]

have you checked the two basic things?

fuel and spark?

Are the injectors opening, get the special injector bulb that clips into the injector plug and crank it over, make sure the light pulses (proving that you are getting both constant power and signal to the injectors)

Check the fuel pump is actually priming the rail, undo the fuel line and turn the car onto the on position and physically watch fuel come out.

Take out a coil, with the spark plug still in it, earth the plug out and crank the car over to make sure there definately is a strong spark.

If its got fuel and spark there should be atleast a kick out of it