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Old 02-20-2008, 08:22 PM   #1
BobbyB2300
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Default Ignition Control Module 94 2.3L

I was clearing a code 224 and diagnosed it to the Ignition Control Module(ICU). Whilst replacing I noticed there were only three bolts tapped into the manifold mount. I'm missing the fourth bolt hole in upper left corner of the ICU. These modules do not work with only two bolts, you must have all three bolted down...ground issue I'm sure. The 224 fault code is all but gone after I replaced the ICU a few days ago. It's breifely reared its ugly head on two brief occasions opposed to constant check engine light memory code.


Does it only have three bolts by design? Now I wonder, is the fourth missing bolt a contributing factor to the ICU failure and the code 224?

What say ye? Oh, by the way first post, love the board.
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Old 02-26-2008, 08:10 PM   #2
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Tough crowd.
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Old 02-26-2008, 09:30 PM   #3
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Let's try something new gang: Dialog!
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Old 02-26-2008, 11:11 PM   #4
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It seemed like there were only 3 bolts when I changed mine, and I just checked the shop manual. It shows only three bolts- both lowers and one upper, on the right side. Also, your replacement module should have included a pack of white goo; it's important to spread it on the back of the module before you mount it.

Sometimes it takes a while to get a response from somebody; it's just luck of the draw.
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Old 02-27-2008, 07:15 AM   #5
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You have to have the upper left bolt in to ground completly.I have "fixed" a few rangers that wouldn't start for guys simply by running a new ground to the upper left corner.My 2 cents
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Old 02-29-2008, 10:57 PM   #6
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Three or four bolts, regardless, my ICM needs a better ground. The Ford Ranger Code 224 code is an Ignition Control Module fault. The ICM should have four bolts...there is a green dot where the missing bolt is, looks like a QC catch.

I'm running a ground from the lower left bolt to the battery/block mount.

The ground on these modules is not the back plate, the back plate is a heat shield for the module logic circuit. The white goo is for heat dissapation. The ground is tied to pin 7(lower left) and connected to the left lower and upper left bolts(looking form the front of the truck), it's a redundatnt ground, they are in a series. This why it won't start if you only secure the two easy bolts to the right. Flakey ground = code 224

Without a correct ground this gem of engineering peels off all kinds of spout, CID, 1234 coil errors.

If you have four bolts good for you, if you have three bolts...get to grounding this rediculous piss poor model of incompetent engineering. Ground it from the lower left bolt to the blcok ground or directly to the battery.

1994 Ford Ranger Code 224 is a faulty ground to the Ignition Control Module. If this info saves you $165 for a new module, send Corona's to TRS, care of...

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Old 02-29-2008, 11:12 PM   #7
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Quote:
Originally Posted by RobbieD View Post
It seemed like there were only 3 bolts when I changed mine, and I just checked the shop manual. It shows only three bolts- both lowers and one upper, on the right side. Also, your replacement module should have included a pack of white goo; it's important to spread it on the back of the module before you mount it.

Sometimes it takes a while to get a response from somebody; it's just luck of the draw.
Why did you change it out, what were the symptoms, codes? What was the diagnosis that led you to swap out the Ignition Control Module?
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Old 02-29-2008, 11:14 PM   #8
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Quote:
Originally Posted by 4b316 View Post
You have to have the upper left bolt in to ground completly.I have "fixed" a few rangers that wouldn't start for guys simply by running a new ground to the upper left corner.My 2 cents

I feel ya, I'm down with that, ditto what he said, thx man! Although I can't use the upper left...there's no freakin hole tapped! LOL, it is a ground fault, no mistake, thx for the input bro.

Last edited by BobbyB2300; 02-29-2008 at 11:16 PM.
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Old 02-29-2008, 11:27 PM   #9
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Ignition Control Modules are expensive and very unforgiving if installed incorrectly. Many times people misdiagnose this as a bad power train computer(PCM) problem...it's not. This misdiagnosis is costing people big!

Post your thoughts\experience here people. Let's party!

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Old 07-12-2008, 02:15 PM   #10
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My 2.3L 93 Ranger died suddenly while I was driving it. Now I have no spark. The hand held code reader showed a stored code 33 for the EGR valve that I had disconnected for a short while and no other codes. I took the ignition controll module to two different Auto Zone stores and they said thet the module was good. I had the truck towed to the Ford dealership and they say that the ignition control module is bad!!! Who should I believe? The delaer wants $590.00 to replace the module and Auto Zone wants less than $200.00 for theirs. I can replace the module myself, BUT what if that isn't the problem? Then I have waisted money on a module that I didn't need and money for a diagnostic at the dealership that didn't tell me anything. Anyone have any advice on what I should do?
Thanks, Alan
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