E4OD overdrive light flashing - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 31 (permalink) Old 04-06-2010, 08:59 AM Thread Starter
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E4OD overdrive light flashing

All of a sudden the tranny is acting up and the overdrive light is flashing.Any ideas?

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post #2 of 31 (permalink) Old 04-06-2010, 10:47 AM
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Re: E4OD overdrive light flashing

its throwing a code, you'll have to pull codes and go from there

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post #3 of 31 (permalink) Old 04-06-2010, 02:25 PM
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Re: E4OD overdrive light flashing

When mine did that the Torque converter was shot and started to chew up the rest of the tranny. You can get the code read for free from pretty much any tranny shop.

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post #4 of 31 (permalink) Old 04-06-2010, 04:01 PM
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Re: E4OD overdrive light flashing

When it starts flashing you have something internal wrong with the tranny. Usually the TC but possibly something bigger.

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post #5 of 31 (permalink) Old 04-07-2010, 01:23 AM
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Re: E4OD overdrive light flashing

The O/D light flashes when either the torque converter is slipping excessively, or one of the shift solenoids are not working correctly or at all for that matter. You need to get it hooked up to a quality scanner asap. If you keep driving it like that you will burn up the tranny real fast. It goes into limp mode when the light is flashing which puts full line pressure to the trans which gives those neck snapping shifts which are no good for anything inside the trans let alone your neck. This will overheat the trans in no time flat and cook it.

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post #6 of 31 (permalink) Old 04-07-2010, 06:19 AM Thread Starter
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Re: E4OD overdrive light flashing

thanks alot guys,i will have the codes pulled thursday and go from there.

'96 F-250 reg cab 2wd auto Posi 3:55s
1/4 mile 15.6 @ 88 mph
K&N air filter 70k
snow performance water/methanol injection
edge evolution,3" downpipe to 5" single stack
'00 F-350 reg cab 2wd dually bone stock needs a bed
124k
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post #7 of 31 (permalink) Old 06-06-2010, 03:18 AM Thread Starter
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Re: E4OD overdrive light flashing

well,i found a running parts truck with 100,000 miles on it.and bieng my block had a crack and the tranny was acting up i naturally decided to swap em out together.motor runs perfect,but i still have the same trans issue.so i may have a good spare trans sitting in my yard.
i guess thats what yo get when you ASSuME
cant wait to get this code pulled monday.

'96 F-250 reg cab 2wd auto Posi 3:55s
1/4 mile 15.6 @ 88 mph
K&N air filter 70k
snow performance water/methanol injection
edge evolution,3" downpipe to 5" single stack
'00 F-350 reg cab 2wd dually bone stock needs a bed
124k
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post #8 of 31 (permalink) Old 06-06-2010, 06:15 AM
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Re: E4OD overdrive light flashing

If you swapped transmissions and still have the exact same issue then you have an electrical problem. I would pull the trans harness and look for signs of damage.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
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post #9 of 31 (permalink) Old 06-06-2010, 08:50 AM
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Re: E4OD overdrive light flashing

Did you look at the codes? Like others mentioned, a good bet is that its the TC if you still used the old one, or the new one could be bad (though obviously theres a slim chance it is). But just my .02
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post #10 of 31 (permalink) Old 06-06-2010, 02:30 PM
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Re: E4OD overdrive light flashing

Quote:
Originally Posted by speeddemon31176 View Post
If you swapped transmissions and still have the exact same issue then you have an electrical problem. I would pull the trans harness and look for signs of damage.
I wouldn't do that. I'd check the codes first, then I would know where to start looking.
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