Can PATS Security Disable while Driving? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-03-2012
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Can PATS Security Disable while Driving?

Was cruising (80mph) down the highway and all of the sudden my truck completely shuts off out of nowhere, luckily no one was behind me and I was able to pull off the side of the highway. I originally thought it was an electrical short problem that had to do wth my overdrive issue (see here).

Truck will turn over fine but won't start, had it towed home. I checked all my fuses and relays and they're all good aswell as the inertia switch. I then rule it to the fuel pump, can't hear it prime when I start the truck nor does any gas come out of the schrader valve on the rail. I give up and finally have it towed to the dealership where the guy tells me it could be the PATS system. I don't recall seeing the security light on the dash blinking, but it was 90 degrees, I was frustrated and ready to throw a wrench through the window. Does PATS disable the fuel pump and can it get out of sync while you're driving? 90k on the odemeter, any input? Everything points to the fuel pump? Either way, I'm ready for the dealership to bend me over and have their way with me.
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Old 07-04-2012
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PATS should never disable while driving - EVER. so I can tell you thats not it.

second, PATS, when engaged wont allow the vehicle to crank...what so ever. let alone start.

Third, itll kill all power to the truck volt wise. no dash lights, no door ajar, nothing.

So your fuel relay could have gone out, the pump could have done its last cycle, or a wire was shaken lose and the the pump lost power, inertia switch could use resetting either way, and the battery/computer while youre at it.
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Old 07-04-2012
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Quote:
Originally Posted by atrocity View Post
Was cruising (80mph) down the highway and all of the sudden my truck completely shuts off out of nowhere, luckily no one was behind me and I was able to pull off the side of the highway. I originally thought it was an electrical short problem that had to do wth my overdrive issue (see here).

Truck will turn over fine but won't start, had it towed home. I checked all my fuses and relays and they're all good aswell as the inertia switch. I then rule it to the fuel pump, can't hear it prime when I start the truck nor does any gas come out of the schrader valve on the rail. I give up and finally have it towed to the dealership where the guy tells me it could be the PATS system. I don't recall seeing the security light on the dash blinking, but it was 90 degrees, I was frustrated and ready to throw a wrench through the window. Does PATS disable the fuel pump and can it get out of sync while you're driving? 90k on the odemeter, any input? Everything points to the fuel pump? Either way, I'm ready for the dealership to bend me over and have their way with me.
If it was related to the PAT’s system it would also disable the starter circuit, so I doubt that’s the problem. First determine whether or not you have spark at the plugs. If you have spark, more then likely its a fuel related problem.

Double check the fuel pump shut-off switch (inertia switch) ensuring you have power at the (Dark Green with Yellow stripe) and the (Pink with Black stripe). If not, reset or replace switch. If you have power out, check for power at the tank connector terminal 4 (Pink with Black stripe). If you have power at the connector, check for ground between the connectors terminal 3 (Black) to chassis ground. If you have power and a good ground at this connector, replace the pump.

Last edited by Rev; 07-04-2012 at 04:53 PM.
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Old 07-04-2012
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It sounds like a fuel pump issue to me.
If you don't hear it priming when the key is turned, and there are no fuses blown. Check for power at the pump next. You should be able to wiggle your hand and or head up there to un-plug it first and use a test light. If you've got power at the pump, but no pump running. I'd replace the pump.

Also, it would be a lot easier to check the pump and replace it, if you took the bed off.
6 T-50 torx bolts, disconnect the fuel filler neck and taillight harness (located above the hitch/spare tire) and 2-3 guys should be able to pick it up and set it on the grass.
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Old 07-09-2012
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Fuel pump was toast, dealership had an absolute field day with me. Thanks for all the help
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