:::RHMT::: Real Home Made Turbo

General Category => Hybrid/Tech => Topic started by: marcj on August 08, 2009, 10:08:42 AM

Title: dead cylinder #2, has spark.. halp!
Post by: marcj on August 08, 2009, 10:08:42 AM

alright, so I had inline resistors which have worked fine up until the latest revision. I got the new setup finished yesterday, but to my dismay, the fucker only runs on 3 cylinders.

#2 cylinder spark plug pulled doesn't change the idle, the rest do; checked spark and it's good.. checked resistor wiring and it is still connected (soldered). Can these things go bad?

I'm about to go check continuity, and injector #2 pin wires near the ecu..

any advice?

Title: Re: dead cylinder #2, has spark.. halp!
Post by: marcj on August 08, 2009, 10:18:31 AM

btw, i have swapped out injectors, so i'm pretty sure the injectors are fine

Title: Re: dead cylinder #2, has spark.. halp!
Post by: onlyflash944 on August 08, 2009, 10:42:46 AM

resistors can burn up, multifunction volt meter is your friend

Title: Re: dead cylinder #2, has spark.. halp!
Post by: marcj on August 08, 2009, 11:02:26 AM

I have one, and have tested the resistance on each injector plug.. all respond the same.

I get nothing with the ECU unplugged (obviously).. i'm starting to think my ECU took a crap

Title: Re: dead cylinder #2, has spark.. halp!
Post by: marcj on August 08, 2009, 11:07:50 AM

I'm getting a solid CEL even after I took my jumper wire out of the DTC plug, so I'm thinking the ecu took a dump.. maybe the injector driver?

Title: Re: dead cylinder #2, has spark.. halp!
Post by: onlyflash944 on August 08, 2009, 11:13:30 AM

test with a known good one

Title: Re: dead cylinder #2, has spark.. halp!
Post by: buk9tp on August 08, 2009, 12:29:36 PM

Quote from: marcj on August 08, 2009, 11:07:50 AM

I'm getting a solid CEL even after I took my jumper wire out of the DTC plug, so I'm thinking the ecu took a dump.. maybe the injector driver?

what i did was swap injector plugs just to be 100% sure its the injector wiring...

then just ran a wire straight from the ecu to the injector..

solid cel for fried ecu but the only problem is one injector doesnt fire?

idk. wierd...

Title: Re: dead cylinder #2, has spark.. halp!
Post by: marcj on August 08, 2009, 02:51:21 PM

i'm swapping the whole engine harness tomorrow, and testing the ecu on a scott evans car.

Title: Re: dead cylinder #2, has spark.. halp!
Post by: TheMadScientist on August 13, 2009, 01:01:49 AM

I would swap out the ecu with a known good ecu to check it.