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post #1 of 7 Old 02-15-2009, 10:17 AM Thread Starter
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Exclamation Pulse width

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

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post #2 of 7 Old 02-15-2009, 10:20 AM Thread Starter
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also done an injector buzz test and they all tested good

99.5 4x4 auto
4inch lift
rebuilt trans with all the upgrades
aftermarket tq converter
adrenaline hpop
5" exhaust
272,XXX miles
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post #3 of 7 Old 02-15-2009, 04:05 PM Thread Starter
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has anyone else ran into this before?

99.5 4x4 auto
4inch lift
rebuilt trans with all the upgrades
aftermarket tq converter
adrenaline hpop
5" exhaust
272,XXX miles
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post #4 of 7 Old 02-15-2009, 05:25 PM
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bump..............

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post #5 of 7 Old 02-15-2009, 05:36 PM
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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?

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post #6 of 7 Old 02-15-2009, 06:50 PM Thread Starter
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cant remeber right off hand but ill look tomorrow and post up what i find

99.5 4x4 auto
4inch lift
rebuilt trans with all the upgrades
aftermarket tq converter
adrenaline hpop
5" exhaust
272,XXX miles
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post #7 of 7 Old 02-16-2009, 07:16 PM Thread Starter
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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

99.5 4x4 auto
4inch lift
rebuilt trans with all the upgrades
aftermarket tq converter
adrenaline hpop
5" exhaust
272,XXX miles
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