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OP
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You're probably dealing with an intermittent OPEN circuit, not a short. Shorts blow fuses. Opens are caused by dirty, loose connectors or wires with broken or corroded strands inside the insulation . With the engine idling in park and the parking brake set, grab any wire harnesses you can reach and do a "wiggle test"- - - -shaking and pulling on the harness like happens when the car is put into gear and the engine torques on its mounts. When you find the one with the loose connection, the engine will stall. Find and fix the bad connection or broken wire that's reacting to torque. Fords are notorious for getting bad connections and the wiggle test is the first thing they recommend in factory service manuals. I've been finding electrical problems other mechanics have given up on since the early 1960's and this is a test I use a lot. Good luck! Jerry ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This here's your huckleberry, most likely ! My .02, as a garage owner. Definitely not vacuum leak - added air after MAF, engine would idle higher & never completely settle to normal. Fuel makes absolutely no sense either. By the way, our shop has never changed a fuel pump in a ford truck. Fuel module driver always. Possible mass air flow sensor, if you can trace to this, by cleaning thus eliminating problem, buy NEW, bitches to clean & maintain (cleaning is ever only a temporary solution). Clean & reinstall throttle plate/body. Not IAC either Damned fords hardly ever set a check engine light !!! Good luck FC ! Thanks, HrL & 99's. My gut kinda tells me this is the most likely. His brother's 04 had the Driver's window dead for nearly a year (thankfully while fully UP) while we tried to figure it out. It had been working fine, and the fuse was good. It took me a while to notice that the dome light was also out, so I checked THAT fuse. When I found it was burned out, I figured I'd fix at least one of his problems, but surely enough, the [eternally damned, porcine fornicating] driver's window motor started working again! Who the hell would put THOSE 2 things on the same circuit? And even if they did, why couldn't they label it better??? It's awfully frustrating that they couldn't have [bleep] [excrement] like this figured out by the 4th generation of the damned car. Best option is to cut your losses and buy a Toyota. That's been the plan for several years. This Taurus was what he could afford at the time, and since he paid for it in full, he's made due with it. Now he just needs to get it running well enough to sell it. Thanks for the ideas. Keep 'em coming! FC
Last edited by Folically_Challenged; 04/04/20.
"Every day is a holiday, and every meal is a banquet."
- Mrs. FC
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Joined: Nov 2007
Posts: 47,177 Likes: 1
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2007
Posts: 47,177 Likes: 1 |
might be idling to low, had that problem with my truck. adjusted up to 800 rpm and no more stalling.
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter
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Joined: Dec 2005
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Sounds like my old Ford every time I got a tank full of crappy gas. Nothing that a 2 dollar bottle of HEET® didn't cure, kept one in the glove box, always.
Padded VA Hospital Rooms for $1000 Alex My ignoree,s will never be Rock Stars on 24 hr campfire.....Like me!!!! What are psychotic puppet hunters?
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UPDATE:
He sent a video that showed the engine bay, with the motor surging noticeably at idle. Then he turned on the AC, and the video showed the tachometer swinging wildly from 500 rpm to 1500 rpm.
He removed the NAPA IAC he’d installed in 2016, and replaced it with the original Motorcraft one that he had hung onto for some reason. Voilà - a steady 850-ish rpms both with AC, and without.
In this particular instance, his packrat proclivity seems to have paid off. I think he retained the original IAC in case it was not the reason for his engine malfunction back then. That did turn out to be the case: ‘twas a disintegrating AC clutch that shorted out a fuse for the keep alive memory.
In any case, he’s got it running at no extra expense, and with nary a nick or cut on his hands. He’s crossing his fingers that this fix gets him through, and doesn’t turn into one of those famous, “well, it ran well for 3 days, but then...” repairs that Taurus are known for.
Thanks to everyone for the input,
FC
"Every day is a holiday, and every meal is a banquet."
- Mrs. FC
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Joined: Jul 2011
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I was gonna say take a chopsaw and cut the piece in half through the crane, barrel and trigger and throw both halves in the trash but then I realized it wasn't that type of Taurus.
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Joined: May 2007
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Campfire Tracker
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OP
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I was gonna say take a chopsaw and cut the piece in half through the crane, barrel and trigger and throw both halves in the trash but then I realized it wasn't that type of Taurus. I’ve not had good luck with those kind, either. FC
"Every day is a holiday, and every meal is a banquet."
- Mrs. FC
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Joined: Aug 2004
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Campfire Kahuna
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Campfire Kahuna
Joined: Aug 2004
Posts: 69,674 Likes: 21 |
Happy ending! Sounds like he's got a head on his shoulders too.
Molɔ̀ːn Labé Skýla!
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Those platinum plugs were discouraged by ford guys i know. They said buy the cheapo motorcraft or off brand. Said you get issues like that. Unless the plugs are OE spec'd plugs I totally agree. My old V10 truck takes basic cheap Motorcraft plugs. Don't do off brand. Someone mentioned Sea Foam and I kind of agree. It won't hurt and could try cleaning the MAF sensor if it has one. May see if you could check or clean out the EGR valve.
Fight fire, save lives, laugh in the face of danger.
Stupid always finds a way.
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