87-89 Anti Slosh Module FIX *PLZ COMIN* - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 18 Old 05-23-2011, 11:38 PM Thread Starter
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87-89 Anti Slosh Module FIX *PLZ COMIN*

Ok seeing as there is not much in the way of a search engine on this I figured to start a HOW TO for future people. My problem is the Fuel gauge reads empty, unplug the harness at the tank the gauge then goes to full. Historically and from what I can find this leads to the Anti-Slosh module on the back of the cluster. Now you CANNOT buy one for 87-89 Cars. So a bypass is needed and I can live with a wandering gauge here and there... Someone on here knows how to "rig" the wiring to make the gauge atleast read properly?! So please school us....

The pic below shows the 5 contact points of the module. From left to right and numbered off of the wiring chart. 8-Signal unit lamp to fuel signal relay /12-Ground / Unkown but leads to the gauge itself / 11-warning lamp feed / 10-fuel gauge feed;low fuel indicator relay.

Which are the proper connections to tape off and which are the proper to link?





Thank you in Advance....


11' 5.0 Brembo TVS trapping 130+
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post #2 of 18 Old 05-24-2011, 08:41 AM Thread Starter
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11' 5.0 Brembo TVS trapping 130+
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Frame up resto!
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post #3 of 18 Old 05-24-2011, 08:43 AM
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A buddy of mine sourced some new resistors and re-soldered his.

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post #4 of 18 Old 05-24-2011, 04:05 PM Thread Starter
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Come on somebody has to have the fix?! Let's put this problem to bed...

11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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post #5 of 18 Old 05-25-2011, 12:30 PM Thread Starter
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11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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post #6 of 18 Old 05-25-2011, 01:18 PM
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That's the place where one of the wiring harnesses plugs in, not where the module plugs in. If you show pics of the whole back in that kind of resolution I can help figure it out. One of those traces from the fuel gauge will lead to the slot for the module. It should be on the end or next to it. That pin and the one next to it get jumpered together.

That's if its the same as my '90... but you suggest it's a different item here, and if so, I don't know. I got one for the '90 from the local dealer. It's called an amplifier in the Ford manual.
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post #7 of 18 Old 05-25-2011, 07:55 PM Thread Starter
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Quote:
Originally Posted by Ascaris View Post
That's the place where one of the wiring harnesses plugs in, not where the module plugs in. If you show pics of the whole back in that kind of resolution I can help figure it out. One of those traces from the fuel gauge will lead to the slot for the module. It should be on the end or next to it. That pin and the one next to it get jumpered together.

That's if its the same as my '90... but you suggest it's a different item here, and if so, I don't know. I got one for the '90 from the local dealer. It's called an amplifier in the Ford manual.
No at the Top of the pic is were the module is screwed down to the open contacts you see. 87-89 were totally diff than 90-93. i tried today to tape off all the contacts and ran a wire from 3rd contact to the 5th which didnt work... the 3rd goes to the gauge and the 5th is the feed... so im lost and about to buy an aftermarket gauge lol

11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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post #8 of 18 Old 05-26-2011, 01:01 PM
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Ah ok, if I had actually read the post I would have seen that. Sorry.

if the five pins of the module are numbered starting on the left side in that image, I would try jumpering pins 1 and 3 (or 1 and 5, same thing). 3 and 5 both lead to the signal input on the gauge... not sure why they did it that way, but they're both connected to the bottommost pin on the gauge. Pin 1 on the module leads to the wiring harness, which would be where the signal comes in from the sender.

Don't blame me please if something bad happens-- you do this at your own risk of course, but if it were mine that is what I would try before resorting to aftermarket stuff (which still does not have antislosh).

That is essentially what I did when I bypassed my plug-in antislosh module (before I replaced it). Signal goes direct to gauge.
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post #9 of 18 Old 05-26-2011, 09:11 PM
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check out ebay item #230588210633 for ford part #E9SZ10E849A.
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post #10 of 18 Old 05-31-2011, 09:13 PM Thread Starter
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Quote:
Originally Posted by Ascaris View Post
if the five pins of the module are numbered starting on the left side in that image, I would try jumpering pins 1 and 3 (or 1 and 5, same thing)..
Thanks for the input im going to try as you stated and report back on the 1 pin to 3 pin as 5 pin has a disconnect in the form of a "hole" if you follow it down on the pic.


11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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Last edited by MnIrishJr; 05-31-2011 at 09:15 PM. Reason: ...
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post #11 of 18 Old 06-01-2011, 09:32 AM Thread Starter
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NO GO on the 1 to 3 pin or the 1 to 5 pin GRRrrrr.... i wonder if i make the wire on 5 pin connect at the factory made hole in the wire (follow it down to see what i mean) and leave everything else if that will work?


I cant believe more peps have not chimed in on this ???

11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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post #12 of 18 Old 06-06-2011, 01:05 AM Thread Starter
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ttt

11' 5.0 Brembo TVS trapping 130+
89' 331 Stroker Carb'd
Frame up resto!
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post #13 of 18 Old 06-06-2011, 07:37 AM
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Could be the gauge or sender at fault, or the wiring between them.
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post #14 of 18 Old 06-06-2011, 06:26 PM
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Sorry but the part # I gave you is for the 91-93.
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post #15 of 18 Old 06-11-2011, 03:29 PM
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i used a piece of foil folded 4 times that is the width of the copper stripps in the plastic circuit board. i didnt put the slosh module back in at all. only needed it in the one spot, were the dash harness plugs in in the back of the cluster. ill get another cluster out and take pics of the fix. its very easy to do. the guage doesnt wander much at all.

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post #16 of 18 Old 06-11-2011, 05:06 PM Thread Starter
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Omg if you can show some pics I'd be very thankfull.... As I am just at my whits end with this!!

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Frame up resto!
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post #17 of 18 Old 06-12-2011, 12:46 PM Thread Starter
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Quote:
Originally Posted by dieselsrfast View Post
ill get another cluster out and take pics of the fix.
If you could be as kind to do this today ill paypal you $25

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89' 331 Stroker Carb'd
Frame up resto!
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post #18 of 18 Old 07-10-2011, 09:19 PM
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my understanding is that if you disconnect the harness at the sending unit and the gauge reads full then your sending unit is the problem, if the gauge doesn't move then its your anti slosh module.

My gauge wouldnt move at all, TODAY I tried to replace the sending unit and it still didn't work (before I found out about this trouble-shooting method). I found a couple anti-slosh modules at the junk yard (where I also found out there was a difference between 87-89 and 90-93), replaced it with a matching module and my gauge now works. There is also a write-up about swapping the large resistor (100 micro farad 25v) with one from radio shack.

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