Erratic idle and poor acceleration

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Jul 30, 2021 | 05:19 PM

#76

wwhite

Logistics Pro

Joined: Aug 2014

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Basically, any EEC-IV hardware that is SD48E will work.
Calibration codes TOE0, TAG0, ALT0 codes should work.
Every now and then I pickup computers, used for $25-$50 when people part out there trucks. Sorry, do not have a 7.5l E4OD computer at the moment.

Jul 30, 2021 | 06:04 PM

#77

Jacinth_Morris

Thread Starter

Cross-Country

Joined: Jun 2021

Posts: 50

Likes: 4

Quote:

Originally Posted by torq'ta 5 8

mileage is stored in PSOM, not the PCM=ECM, unless its for warranty, and what motor in truck, it wont help assure you get an PCM, for E4OD

1994 7.5l 460 with E4OD. I've got pictures of the pcm in this thread if you haven't seen them already. And it's the year of the dwell ICM, so keep that in mind. I don't want to accidentally order the wrong one because some things did change throughout the years. Unless you think one from a brick nose would work which I doubt because of the different ICM.

Jul 30, 2021 | 06:23 PM

#78

wwhite

Logistics Pro

Joined: Aug 2014

Posts: 3,558

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One from a brick nose will not work, not sure where that came from.

You need a PCM computer from a 1994 and up, with E4OD.
Basically any SD48E hard ware will work. Verify, each should be 7.5l w/E4OD.

Jul 31, 2021 | 07:33 AM

#79

Jacinth_Morris

Thread Starter

Cross-Country

Joined: Jun 2021

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Quote:

Originally Posted by wwhite

If you read up the forum then you'll know that we determined one from a brick nose would not work specifically due to the different icms. They're both obd1 but the pcm receives signal differently. Doesn't hurt to get a 2nd opinion. I'll do some more price checking and I'll see about ordering one here today if not then soon. I'll match the model number and the code (TAGO)

Jul 31, 2021 | 10:42 AM

#80

foresixtee

Mountain Pass

Joined: Jul 2021

Posts: 193

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Quote:

Originally Posted by Jacinth_Morris

Those O'Reilley's Cordone computers are apparently good quality from what I have heard around.

Jul 31, 2021 | 03:42 PM

#81

torq'ta 5 8

Lead Driver

Joined: Jan 2019

Posts: 5,076

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From: N.W. Alabama

Quote:

Originally Posted by Jacinth_Morris

Yes, your right about ICM, brick nose will not work, post #72 has the PCM you need according to your F4TF-12A650-ZA (F4TF-ZA)that rla2005 said you needed, and your pic shows same #'s, the TAGO(EEC program codes) not calibration codes, that wwhite says you need will not show on a order form, but this will F4TF-12A650-ZA

Aug 14, 2021 | 08:15 PM

#82

Jacinth_Morris

Thread Starter

Cross-Country

Joined: Jun 2021

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So, not sure if anyone will revisit this forum, but here's a little update.

Got the new PCM today and got it installed. Fixed the problem but I noticed a different problem spontaneously occur. Keep in mind I have an aftermarket precision low stall triple disc torque converter. So the lockup is really fast. But in third gear when it locks up it feels like the converter unlocks and locks back up a few times. I can't remember if the rpm jumps, vague memory, but I don't believe it jumps. In any other scenario it's fine and doesn't repeat that feeling. Mainly when accelerating without much load on the engine. I might try looking at the tps voltage tomorrow because that could be a culprit. Anyone have any ideas/suggestions, shoot it my way. Thank you