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Start and dies after about 3 min

Tiny
FRANKJ0N3S
  • MEMBER
  • 2002 FORD TAURUS
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 166,000 MILES
I have a 2002 ford taurus vin U 3.0l and when I start the car it will run around 1800 rpm for a few minutes and when it tried to bog down to normal idle say 800 or so it will instatly die. I have replace alot the IAC, TPS, Crank sensor, Fuel pump and filter, Fuel pressure regualtor and fuel pressure sensor, I think thats all but the problem still persist i'm getting kind of stumped, when the engine starts to die if you catch it and hit the gas a bit it will rev back up to 1800 and sit there again for another few minutes kinda like you hit some reset button and round robin goes the problem
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Thursday, June 19th, 2014 AT 1:55 PM

20 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
I see the list of stuff you replaced. Is there anything else like plugs filters etc. Have you cleaned the mass air flow meter with mass air flow cleaner? Get back to me and we will go from there
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Friday, June 20th, 2014 AT 7:39 AM
Tiny
FRANKJ0N3S
  • MEMBER
  • 11 POSTS
Yes I tried that today after reading seeing your post. Nothing changed.
More information I can give going back in history spark plugs were replaced 30,000 miles ago can't remember if wires were replaced, never replaced coil pack, a shop had done a front cover gasket and allowed a senor wire to remain loose and dangle which melted on the EGR tubing and fried the PCM and maxi fuse about 8,000 miles ago said shop replaced the PCM and fixed the wire issue and it drove fine for a while then a few months later I traveled about 250miles total to get a new vehicle got to the dealer and back no problem went to start the car started fine when I put it in reverse and gave it gas it died and has been the way I described ever since. I have drained the fuel tank in hopes it was bad gas and that's when I replaced pump and filter. I think that's everything that has been done within the past 30k miles
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Friday, June 20th, 2014 AT 9:51 AM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
So this only happens when you put the car in reverse? What plugs did you use? Were they platinum or not? Get back to me and lets see if we can fix this ok. I don't think its coil pack or anything like that so don't go there yet ok.
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Saturday, June 21st, 2014 AT 7:06 AM
Tiny
FRANKJ0N3S
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No not only when I put it in reverse. It does all this now in park. I don't want to tempt fate and get stuck somewhere driving it. I don't remember if they were platinum plugs I do know they where motorcraft do you want me to pull one and find out? I have tried on more thing since post I tried pulling the pre cat o2 sensor thinking maybe exhaust restriction might be causing the stall and die, but nope, thought it was a long shot anyway as you can hit the gas and make the vehicle continue to run if it was a cat issue I doubt you could do that without seeing some noticeable side effect.
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Monday, June 23rd, 2014 AT 10:28 AM
Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Should have asked this first off is the check engine light on?
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Tuesday, June 24th, 2014 AT 8:23 AM
Tiny
FRANKJ0N3S
  • MEMBER
  • 11 POSTS
Nope I pulled history are for airbag and door switch, replaced battery cuz it was dead that's where I think airbag light came from and door was open when checked codes by yea nothing indicateing a problem
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Tuesday, June 24th, 2014 AT 10:20 AM
Tiny
RACEFAN966
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Did this problem start after replacing the battery?
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Wednesday, June 25th, 2014 AT 8:33 AM
Tiny
FRANKJ0N3S
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  • 11 POSTS
No and I tried to see if it would dye while in gear and it will dye no matter what gear if you are at a stopped position like sitting at 1000 rpms
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Wednesday, June 25th, 2014 AT 8:54 AM
Tiny
RACEFAN966
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Sorry for the delay had to think about this for a day, so it only dies in gear? It will run when in neutral or park and not die? Do you have a digital multi meter? Get back to me I will look up a test for the lockup on the torque converter.
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Friday, June 27th, 2014 AT 7:02 AM
Tiny
FRANKJ0N3S
  • MEMBER
  • 11 POSTS
No it doesn it no matter what drive reverse nutraln park all the same start it runs high idle 1500 - 1800 rpm for bout 5 minutes and when it warms and drops rpms 800 - 1000 it dies
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Friday, June 27th, 2014 AT 10:32 AM
Tiny
RACEFAN966
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Do you have a digital multi meter? I need you to check voltage to the IAC motor and ohm the motor too. Get back to me with that. We also may need to check the O2 sensors too. Are they new or not?
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Monday, June 30th, 2014 AT 8:55 AM
Tiny
FRANKJ0N3S
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Ohmed out at 10.7 ohms and on initial start had 6v going to it then it sat at a touch over 5v untill it then died sorry about the delay busy time of year.
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Tuesday, July 15th, 2014 AT 3:07 PM
Tiny
RACEFAN966
  • MECHANIC
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Ok voltage it good, computer produces 5v reference to all the sensors and such. The ohms are a bit low however. So if you would unplug it and see if starts and idles ok. The engine light will come on so you will have to clear it, let me know what it does ok.
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Wednesday, July 16th, 2014 AT 8:58 AM
Tiny
FRANKJ0N3S
  • MEMBER
  • 11 POSTS
Car does not run with the IAC unplugged will not start without it. It does not stay running when unplugged while vehicle is running.
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Thursday, July 17th, 2014 AT 10:07 AM
Tiny
RACEFAN966
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Good that means it is working and the computer sees it too. So unplug the mass air flow sensor and let me know how it idles. It wont have much throttle response so don't worry about that just want to know how it idles.
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Friday, July 18th, 2014 AT 7:42 AM
Tiny
FRANKJ0N3S
  • MEMBER
  • 11 POSTS
It'll bounce around 500 rpm struggling to stay running and eventually die
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Friday, July 18th, 2014 AT 3:41 PM
Tiny
RACEFAN966
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Have you had the battery tested? If the battery is bad or not holding a charge then the low voltage can do this too. I have had this problem on a few other Fords so let just be sure ok.
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Sunday, July 20th, 2014 AT 6:43 AM
Tiny
FRANKJ0N3S
  • MEMBER
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Its new and tests ok. On a side note though I've replaced a battery a year since I've owned it as well as 2 starters can find excessive draw and tried anparasitic drain test to no avail I never could find what was draining the battery
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Monday, July 21st, 2014 AT 11:58 AM
Tiny
FRANKJ0N3S
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Sorry cant find excessive draw
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Monday, July 21st, 2014 AT 12:00 PM
Tiny
RACEFAN966
  • MECHANIC
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If you would use a digital multi meter and disconnect the positive cable from the battery and then on the 20 volt scale put the meter between the cable and the battery post let me know what voltage you find ok
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Thursday, July 24th, 2014 AT 8:55 AM

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