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#2050863 - 05/20/10 09:55 AM OD off light flashing- transmission
rick1970 Offline
n00b

Registered: 04/10/10
Posts: 22
Loc: FL, USA
the od off light is flashing on and off...the car is hunting for gears...any idea what to check??..thank you.....
_________________________
2001 crown victoria P71

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#2050874 - 05/20/10 10:06 AM Re: OD off light flashing- transmission [Re: rick1970]
Colt45 Offline
less is more�
Poobah

Registered: 08/30/04
Posts: 6447
Loc: Moses Lake, Wa
Youll need to pull the codes from the computer. Flashing OD light indicates a transmission fault.
_________________________
-Colton


2004 Ford Crown Vic LX, 89k "Tank" (Totaled 12/06/15 22:30 PST)
2002 Ford Crown Vic PI, 201k "Highwayman" (Ex-Kootenai County, ID Unit #42) - Down for bad engine
2003 Ford Crown Vic PI, 98k "Name TBD"

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#2050888 - 05/20/10 10:23 AM Re: OD off light flashing- transmission [Re: Colt45]
rick1970 Offline
n00b

Registered: 04/10/10
Posts: 22
Loc: FL, USA
ok..thank you....so how many things could it be??!! something easy and cheap i hope.....
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2001 crown victoria P71

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#2050890 - 05/20/10 10:28 AM Re: OD off light flashing- transmission [Re: rick1970]
Colt45 Offline
less is more�
Poobah

Registered: 08/30/04
Posts: 6447
Loc: Moses Lake, Wa
Dozens. The codes will be more specific and it could be anything from loose or corroded wiring to a transmission rebuild. Try to avoid driving the car until this is repaired.


Edited by Colt45 (05/20/10 10:28 AM)
_________________________
-Colton


2004 Ford Crown Vic LX, 89k "Tank" (Totaled 12/06/15 22:30 PST)
2002 Ford Crown Vic PI, 201k "Highwayman" (Ex-Kootenai County, ID Unit #42) - Down for bad engine
2003 Ford Crown Vic PI, 98k "Name TBD"

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#2050895 - 05/20/10 10:34 AM Re: OD off light flashing- transmission [Re: Colt45]
rick1970 Offline
n00b

Registered: 04/10/10
Posts: 22
Loc: FL, USA
well..i have to drive it to the shop..thats it..i have a bike..so hope no rain...!
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2001 crown victoria P71

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#2050929 - 05/20/10 11:17 AM Re: OD off light flashing- transmission [Re: rick1970]
gDMJoe Offline


Poobah

Registered: 06/03/03
Posts: 7705
Loc: Timbuk3, MI

Eenie meenie chilli beanie, the spirits are about to speak! ...

And the year, make, and model of your vehicle is ?

HINT/TIP: Put your vehicle information in your sig' -OR- provide it your posting(s).
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#2050943 - 05/20/10 11:41 AM Re: OD off light flashing- transmission [Re: gDMJoe]
rick1970 Offline
n00b

Registered: 04/10/10
Posts: 22
Loc: FL, USA
2001 ford crown victoria p71 97K miles
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2001 crown victoria P71

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#2050980 - 05/20/10 12:22 PM Re: OD off light flashing- transmission [Re: rick1970]
99_03PantherS Offline
Poobah

Registered: 03/23/03
Posts: 9577
Loc: NW side Chicago
Dont drive it anymore.
If the OD light is flashing, it can be a sensor of some kind. Need to have the code checked.
_________________________
Jason G.
'06 Towncar Designer
'81 Mark VI 2 door
'88 Towncar Cartier
'07 P71 SAP- steedas, jmod, 410s, Mo's tune, numerous interior exterior mods.
'16 F-450 V10 DRW
'08 F-450 Powerstroke DRW: DPF,EGR delete, AFE intake Spartan powered.
RIP 94 P71, 97 P71, 99 M74, 03 M74

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#2051135 - 05/20/10 04:00 PM Re: OD off light flashing- transmission [Re: 99_03PantherS]
rick1970 Offline
n00b

Registered: 04/10/10
Posts: 22
Loc: FL, USA
i concur about not driving it..but have to get it to the shop..pushing it sucks...towing well...sucks...driving it three miles is that bad??...thanks guys...
_________________________
2001 crown victoria P71

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#2054183 - 05/25/10 12:17 AM Re: OD off light flashing- transmission [Re: rick1970]
spenck07 Offline
Member

Registered: 05/10/10
Posts: 132
Loc: Edon, Ohio
I just started getting that same thing bought the car two weeks ago, and now over 50 or 60 it does it, no shift problems or overdrive issues just blinking light.
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#2374017 - 09/19/11 12:45 AM Re: OD off light flashing- transmission [Re: rick1970]
SteamRoller Offline
Member

Registered: 06/02/02
Posts: 126
Loc: San Fernando Valley, Californi...
So how do I pull the transmission codes? I have an OBDII scanner but I don't think it will help with the codes.
_________________________
SteamRoller
2001 Grand Marquis LS

COMPLETED MODS:
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Airlift 100 coil inserts.

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#2374165 - 09/19/11 11:43 AM Re: OD off light flashing- transmission [Re: rick1970]
MyP71Vic Offline
Over the Hill

Registered: 09/27/10
Posts: 2299
Loc: Brookfield, WI
Mine does this also I got some codes from it about a month ago then everything cleeared up and worked great now it is back. The codes I got were P1783 trans temp, P1705 tran rng out of test rng, P1502 vss inter apcm functioning, P1501 vss out of self test rn, and P0500 veh spd vss er. These seem kind of random or are they related through one sensor? It is totally fine when driving very easy. Fluid is like new still cause it keeps leaking a little so I just keep adding it as it goes to keep it fresh!
_________________________
2004 P71 Dodge County Sherrif 158K
3.27 Trac-Lock, BBK 78mm TB/Plenum, 1/2 inch spacer, SCT XCAL 2 Tuner with BOC Tune, OBX LT Headers Kit, ACCEL Super Coils, Light back tinted Headlights and Clear Side markers, 8K 55W HID, Heinous Control Arms from ADTR, 17 inch 06 GT Premium Rims
Up next either cams, stall, or gears.

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#2374461 - 09/19/11 09:58 PM Re: OD off light flashing- transmission [Re: rick1970]
JSanders Offline
Member

Registered: 03/25/11
Posts: 227
Loc: California
High temp is one cause for a flashing light. If you can measure the temp with a touchless temp probe while it is flashing, you might see if the temp is too high, if the sensor is bad or not. You can shoot the bottom of the tranny pan and get a pretty accurate trans fluid temp that way.
Could be that your trans cooler is plugged up, or the thermostat on the trans cooler is frozen shut. Normal is around 180 degrees, mine takes a good 10 miles to get up that high unless it's super hot out.
_________________________


2001 P73 JMOD Trim rings and tall caps. BH1976 Headlight mod, Philips XTreme9007. Rear 17mm Swaybar.
Do you want a JMOD decal sticker? 2for$6, see my profile for link.

Need LCM relay? (EQ1-11111S) LCM relay link here:

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#2374475 - 09/19/11 10:17 PM Re: OD off light flashing- transmission [Re: JSanders]
SLOBRA Offline
Member

Registered: 05/02/11
Posts: 424
Loc: Minnesnowta
Originally Posted By: JSanders
Normal is around 180 degrees


That seems pretty high man unless you have a stall converter maybe. I had a scanguage on mine last year with the 3800 stall and 4.10 gears and never saw more than 165. I basically borrowed the device and beat the crap out of it for 15 minutes.
_________________________

1997 Lincoln Mark VIII LSC Supercharged

9psi, E85, stock bottom end

[email protected]


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#2374528 - 09/20/11 12:14 AM Re: OD off light flashing- transmission [Re: MyP71Vic]
olopezm Offline
Member

Registered: 09/28/10
Posts: 483
Loc: Irapuato, Mexico
Originally Posted By: SteamRoller
So how do I pull the transmission codes? I have an OBDII scanner but I don't think it will help with the codes.


You can give it a try, some transmission codes can be read with a cheap scanner, if nothing comes up then you'll need to have it diagnosed with the proper scanner. I've seen that kind of behavior on transmissions when the Transmission Range Sensor aka Neutral Safety Switch or Manual Lever Position Sensor goes bad; a bad VSS can cause that too.

Originally Posted By: MyP71Vic
Mine does this also I got some codes from it about a month ago then everything cleeared up and worked great now it is back. The codes I got were P1783 trans temp, P1705 tran rng out of test rng, P1502 vss inter apcm functioning, P1501 vss out of self test rn, and P0500 veh spd vss er. These seem kind of random or are they related through one sensor? It is totally fine when driving very easy. Fluid is like new still cause it keeps leaking a little so I just keep adding it as it goes to keep it fresh!


It looks like your fluid leak has caused intermittent contact with the sensors. I would inspect the connectors and sensors and give them a good clean with electric contact cleaner.

Oscar.
_________________________
1995 Lincoln Town Car Signature
1997 Pontiac Grand Prix GT
2000 Ford Windstar SE

"If you don't agree with me I respect you; if I don't agree with you I'm an ignorant? Nice thinking smart guy...

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#2374531 - 09/20/11 12:35 AM Re: OD off light flashing- transmission [Re: SLOBRA]
JSanders Offline
Member

Registered: 03/25/11
Posts: 227
Loc: California
The 01 has a 180 thermostat built right into the trans cooler.
_________________________


2001 P73 JMOD Trim rings and tall caps. BH1976 Headlight mod, Philips XTreme9007. Rear 17mm Swaybar.
Do you want a JMOD decal sticker? 2for$6, see my profile for link.

Need LCM relay? (EQ1-11111S) LCM relay link here:

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#2374614 - 09/20/11 10:09 AM Re: OD off light flashing- transmission [Re: rick1970]
MyP71Vic Offline
Over the Hill

Registered: 09/27/10
Posts: 2299
Loc: Brookfield, WI
Actually I had only replaced some of the coils before cause the store didn't get them all in right away and now that I replaced the last few it is driving normally again. Could it just be a coincedence or could a very slight misfire which came out to 1 in each of the 2 cylinders in a 15 min run cause tranny issues like searching for gears occasionally and the light flashing briefly then going away? It would only do this 1-2 times per drive. Also the fluid leak is up in front from the hose on the tranny cooler so I am not sure if it could make it that far back.
_________________________
2004 P71 Dodge County Sherrif 158K
3.27 Trac-Lock, BBK 78mm TB/Plenum, 1/2 inch spacer, SCT XCAL 2 Tuner with BOC Tune, OBX LT Headers Kit, ACCEL Super Coils, Light back tinted Headlights and Clear Side markers, 8K 55W HID, Heinous Control Arms from ADTR, 17 inch 06 GT Premium Rims
Up next either cams, stall, or gears.

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#2374989 - 09/20/11 08:40 PM Re: OD off light flashing- transmission [Re: rick1970]
olopezm Offline
Member

Registered: 09/28/10
Posts: 483
Loc: Irapuato, Mexico
Might be; transmissions rely on a good engine performance to work properly. Just keep an eye on it to make sure you don't end up damaging your transmission.

If you have a cheap OBD II scanner you might want to give it a try to see if there are any pending codes, some transmission codes can be read this way.

You're right the leak wouldn't cause that based on it's location.

Oscar.
_________________________
1995 Lincoln Town Car Signature
1997 Pontiac Grand Prix GT
2000 Ford Windstar SE

"If you don't agree with me I respect you; if I don't agree with you I'm an ignorant? Nice thinking smart guy...

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#2375020 - 09/20/11 09:32 PM Re: OD off light flashing- transmission [Re: JSanders]
SLOBRA Offline
Member

Registered: 05/02/11
Posts: 424
Loc: Minnesnowta
Originally Posted By: JSanders
The 01 has a 180 thermostat built right into the trans cooler.


Interesting. Did that change in the newer 4R70Ws? Mine is out of a 99 Vic so maybe it's different.
_________________________

1997 Lincoln Mark VIII LSC Supercharged

9psi, E85, stock bottom end

[email protected]


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#2375038 - 09/20/11 09:59 PM Re: OD off light flashing- transmission [Re: rick1970]
Bangster Offline

Poobah

Registered: 11/30/01
Posts: 9207
Loc: Tucson Az
98+ external cooler has a thermal bypass, I don't know the temp on it.
_________________________
00 Grand Marquis LS Premium - 97 Cougar 4.6 Sport - 89 Cougar LS - 63 Falcon 302 - 82 F-150 - 97 Mark VIII LSC - 2017 Escape SE - 2012 Fusion Sport AWD

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#2398215 - 10/30/11 06:24 PM Re: OD off light flashing- transmission [Re: rick1970]
FLP71 Offline
n00b

Registered: 08/13/11
Posts: 29
Loc: Florida
I had the same problem after getting my P71 stuck in mud, turned out to be a blown PCM fuse causing the OD off light to flash. Just reminding you guys sometimes it's the basic things.

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#2696563 - 04/15/13 05:44 PM Re: OD off light flashing- transmission [Re: rick1970]
gcassidy Offline
n00b

Registered: 03/20/10
Posts: 47
Loc: Silver Spring, MD
FWIW, I had this happen after going through a car wash.

It started flashing after it came out of the wash. Code was P0713-Trans Fluid Temp high input. Since it was only about 50 degrees that day, and I had only driven a couple miles to the car wash, I'm expecting some water shorted something.

The light stopped flashing after a day of drying out, and I have cleared the code. So far so good. And damn it looks good when clean.
_________________________
Greg
'01 CVPI
'98 SVT Mustang Cobra
2002 SVT Focus

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#2696576 - 04/15/13 06:06 PM Re: OD off light flashing- transmission [Re: rick1970]
stalag Offline
Over the Hill

Registered: 03/29/09
Posts: 3978
Loc: Columbus, OH
Get that looked at. The corrosion in the wire can cause other problems if this is neglected.
_________________________
Stalag;___________Just for Rizzo I am posting this in my sig. Coolants
2001 Lincoln Town Car Cartier L, 1997 Mercury Grand Marquis (extinct)
On my LTC the following mods/upgrades were added. Heinous motorsport control arms, Command Automotive SD-1 rotors (these rotors can no longer be obtained), Calipers by Goldlinebrakes.com in silver with Hawk HPS pads (now running Ford OEM), MSD COP's. MZT is also applied with programming from BOC. j-mod is now done. Final rebuild of transmission done by Gearstar.

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#2696616 - 04/15/13 07:12 PM Re: OD off light flashing- transmission [Re: rick1970]
gcassidy Offline
n00b

Registered: 03/20/10
Posts: 47
Loc: Silver Spring, MD
Good idea. Is it more likely a wiring harness or internal?
_________________________
Greg
'01 CVPI
'98 SVT Mustang Cobra
2002 SVT Focus

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#2875083 - 12/04/14 09:11 PM Re: OD off light flashing- transmission [Re: rick1970]
maroonlagoon Offline
Member

Registered: 01/24/10
Posts: 200
Loc: allover
Hey Gang,
I'm having this OD flashing light accompanied with a temperature gauge that will not go up. Still blows warm air, and fluid in the res.. Its an 03 LX if anyone might be able to give me a pointer...
Thanks
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