7.3L SES light after 10 minute warmup - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 09-02-2013, 10:35 PM Thread Starter
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7.3L SES light after 10 minute warmup

Okay, so my rig has 496k miles on her. Just drove from San Diego to home in Florida. Not one issue... 22mpg. However, now when I drive to work in the am I am having some issues. At first start up..when cold she starts and runs fine... perfect, but after about 9 miles or (10 mins) and she warms up the Service Engine Soon light illuminates and it feels like it dropped a cylinder. Valve Cover harness's been replaced on both sides. IDM was replaced 6 months ago. (have warranty on it) Just had ford do an oil change and changed the HPOP oil as well. Not the HPOP just the oil in it. So if anyone has had similar issues I am grateful for any direction. I love the 7.3L as she has served me well. I can't complain as almost 500k miles same engine same trans and same injectors. Thanks George
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post #2 of 13 Old 09-03-2013, 12:55 AM
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Have you had it scanned for codes? That will help a lot.

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post #3 of 13 Old 09-03-2013, 03:11 AM
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Honestly sounds like injectors... Cold oil will be thicker, as it warms it thins out and can bypass the injectors.

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post #4 of 13 Old 09-03-2013, 05:58 AM Thread Starter
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Hi, thanks for the quick responses. I have not yet had a moment to have the codes scanned. I do have a Diablosport predator installed in it. Will I have to remove that before I take it to get it scanned? Its a handheld programmer/scanner its supposed to give you codes etc... but I am not sure how reliable it is. I will give it a shot this weekend. Thanks George
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post #5 of 13 Old 09-03-2013, 10:43 AM Thread Starter
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well today it didn't wait to warm up before the SES light and rough running (dropped cylinder) started. I happened almost instantly. Any thoughts?
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post #6 of 13 Old 09-07-2013, 01:30 PM
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Quote:
Originally Posted by 00F250-500k View Post
well today it didn't wait to warm up before the SES light and rough running (dropped cylinder) started. I happened almost instantly. Any thoughts?
Have you scanned for codes yet? Check your under valve cover harness.

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post #7 of 13 Old 09-08-2013, 08:31 AM
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Don't do anything until you read the codes. Your programmer should read the codes if it is a tuner for a PSD. The FREE scans at the auto parts store won't work because they don't have the Ford Bundle software on them. If you were closer I would scan it with the AE for FREE. First get the codes read and let us know what they are. Could be lots of things.

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post #8 of 13 Old 09-10-2013, 08:48 PM Thread Starter
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okay, update... found a great diesel guy in St Petersburg, Fl and he ran a (cylinder contribution test) CCT and #2 injector is the issue. He didn't charge me anything to run the test. So I am thinking about just doing the left bank right now and then the right bank at a later time. Anyone know if any great deals on Injectors? Thanks George
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post #9 of 13 Old 09-11-2013, 04:55 AM
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Any of the reputable rebuilders/performance injector shops.

FullForce, Swamps, P.I.s, Warren, not dieselcare though.

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post #10 of 13 Old 09-11-2013, 07:20 AM Thread Starter
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NCHornet, thank your son for his service! These men and woman are our heros! Okay I almost ordered the Diesel Care product but after looking at their feedback and then hucorey also stated not to use diesel care products.. that leaves Full Force or swamps. I do like the 5 yr warranty for an additional $23 per injector.
any thoughts..
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