Pulse width

thebigstroke · #1 (**permalink**) 02-15-2009, 10:17 AM

what controls the pulse width? i had a piston come a part so i got a new engine to put in and after i got it all switched out it wont start so i hooked up to a modis scan tool and the injector pulse width is .6 ms and according to mitchell on demand it should be 1-6 ms. has anyone had this problem or know what controls the pulse width. the engine is out of a 2003 with 40k on it. thanks in advance for any help

thebigstroke · #2 (**permalink**) 02-15-2009, 10:20 AM

also done an injector buzz test and they all tested good

thebigstroke · #3 (**permalink**) 02-15-2009, 04:05 PM

has anyone else ran into this before?

00strker · #4 (**permalink**) 02-15-2009, 05:25 PM

bump..............

symbols · #5 (**permalink**) 02-15-2009, 05:36 PM

That's going to be or icm in conjunction with the pcm. I am sure that the values are taken from the map sensor and crank sensor. What do those say?

thebigstroke · #6 (**permalink**) 02-15-2009, 06:50 PM

cant remeber right off hand but ill look tomorrow and post up what i find

thebigstroke · #7 (**permalink**) 02-16-2009, 07:16 PM

finally figured out the problem. it was the hpop not putting out enough pressure while cranking. had another hpop laying around switched them out and it fired right up with no problems

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