Transmission goes in and out of Overdrive on it's own, most of the time @ 50 MPH.Replaced sensor, replaced harness what's next?

Asked by Apr 29, 2015 at 06:09 PM about the 1997 Ford Crown Victoria 4 Dr STD Sedan

Question type: Maintenance & Repair

7 Answers

7,600

Have a ford tech drive it at your dealer. defining the symptom can stop the unnecessary parts replacement. Then when he verifies and defines it. he can isolate with the tests if you authorized. Normally the first hour can contain the road test, testing and get you the cause.

5

My problems with the tranny shifting into and out of O/D at low speeds was greatly reduced to the point of only once in a long while by replacing ALL the tranny fluid with Royal Purple Synthetic fluid....as another benefit, it shifts harder and is very consistent. My whip is an '04 P71

7,600

Contamination or build up can mean time to service or flush. The vehicles supplied manual is supposed to advise gear selection, for terrain. the best use of overdrive is described there based on what they recommend for that trans in that year. A trans builder is the best person to talk it over with to save it. He tears them down and knows what fails, and after what the customers habits were.

7,600

A torque converter issue can be considered during the discussion. Flushing and additives for grip or antishudder could be help in some circumstance

7,600

If the tech uses the NGS and captures the data during the event, and the method of gear selector choice is correct for the conditions, The data can reveal any electronic issue. The PIDs can be recordrd for playback. That means you can watch each datastream circuit as the trans performs or has its "hiccup" Then get it explained, get recommendations, or effect repairs. Sometimes this leads to service bulletin info that can help. It Always depends what it is and whether the info actually applies to the year, make, model, and situation. A FORD service area often has one trans builder who devotes his "life" to this knowledge, experience, and current data as well as his own Ideas that develop from trying to effect economical repairs.

7,600

If an older vehicle has issues with the overdrive cancel switch, it can be caused by the tilt being operated back and forth or overmaxed over its life. there is a repair you can make But you must know by testing or inspecting yours. There may be a bulletin found and a motorcraft corrective repair kit available. The idea being broken wires where it pulls or pivots. I watched a utube where the guy has a failed trans and an o/d light issue. it was on a pickup, but it stands to reason that the car platform having similar column shifted design can have likely same issue.

5

I think the tailshaft mod and the J-Mod would take care of 98% of the maladies in our trannies....a convertor would be an 'ultimate' mod to me, can't wait for that day

Your Answer

Add photo

Related Questions

Crown Victoria

Looking for a Used Crown Victoria in your area?

CarGurus has 1,220 nationwide Crown Victoria listings starting at $1,700.

ZIP:

Search Ford Crown Victoria Questions

Ford Crown Victoria Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 1,700
#2 Tom Demyan
Tom Demyan
Reputation 870
#3 FordNut
FordNut
Reputation 840
View All

Related Models For Sale

Used Mercury Grand Marquis
26 Great Deals out of 2,202 listings starting at $1,995
Used Chevrolet Impala
793 Great Deals out of 34,384 listings starting at $799
Used Ford Mustang
362 Great Deals out of 44,486 listings starting at $1,000
Used Lincoln Town Car
29 Great Deals out of 2,080 listings starting at $1,995
Used Ford Taurus
254 Great Deals out of 20,514 listings starting at $1,500
Used Chevrolet Tahoe
772 Great Deals out of 28,452 listings starting at $1,500
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000
Used Ford Explorer
936 Great Deals out of 73,995 listings starting at $750
Used Chevrolet Caprice
175 listings starting at $13,998
Used Honda Accord
811 Great Deals out of 81,613 listings starting at $899
Used Chevrolet Camaro
282 Great Deals out of 38,299 listings starting at $1,250

Used Cars For Sale

2011 Ford Crown Victoria For Sale
6 Great Deals out of 145 listings starting at $3,700
2008 Ford Crown Victoria For Sale
3 Great Deals out of 143 listings starting at $1,700
2007 Ford Crown Victoria For Sale
95 listings starting at $2,995