Weird where those links on "learning about code P0705" are taking me.
But, yes, I have a code P0705, Trans Range Sensor Circuit Malfunction.
(PRNDL input)
Symptoms are: A few seconds after startup, a squeak coming from under and around transmission/transfer case, undercarraige. (the solenoid)?
Speedometer doesn't work and engine won't uphift after moving forward in drive for a few more seconds until engine warms up. On shift selector stalk, overdrive OFF light will blink but overdrive DOES work.
I've recently made my donation to the Ford dealer benefits and pension fund, so I'm looking on spending a more realistic amount of my money to get this fixed. My NAPA parts guy shows a "Dual Shift Ford A/Trans Solenoid" for MY 1997 5.4 AWD model Expy. Is this what I need? Anyone know if it plugs internally or outside of the trans. Any input and experience with this problem would be greatly appreciated.

Thanks,
Stephen

 

The fault code you have and your noise are probably unrelated. Based soley on your report, there is no evidence that there is anything wrong with your shift solenoids (which are INTERNAL to the tranny).

Remember, fault codes are not your instruction to start hanging parts on a vehicle, they are diagnostic data points to be used as part of a logical procedure to find and repair a fault.

Steve

 

Well, it turns out after reviewing some threads here and doing a search, feeling around behind the air intake/throttle body elbow revealed the source of all that vacuum noise. A deteriorated rubber elbow on the back end of the PVC valve assembly, $30 bucks at Ford, was causing codes p0701, p0704, which are leanmixtures to right and left banks of cylinders. 'Fixed the low and rough idle and oddly shut off the blinking overdrive light on the staulk and the p0705 code, Trans Range Sensor Circuit, which must be that diaphram and solenoid looking thing next to the PCV elbow I just replaced on the manifold. They must be using the same origin of the manifold vacuum.
So, no, they weren't related, the transmission shifts fine, and I probably saved time and a few hundred bucks going to the Ford dealer by refering to this valuable website. I am very grateful. Thanks to all.

Stephen

 

The fault you found was in no way related to your original problem, except, perhaps the noise.

Don't be surprised if certain issues return.

The fault you found causes p0171 & P0174 fault codes, nothing else.

Steve

 

That's true. After I deleted the codes, the truck ran without symptom.
When I went out later to start the truck a second time, the overdrive OFF light returned to it's blinking and check engine light came on again for code P0705. The other two codes did not return with the vacuum fix. So I'm back to the original symptoms listed in this thread. It seems to operate fine, O/D blinking light and all, after the engine warms up. Speedo will then function and car will then upshift normal.

Stephen

 

Sounds like an intermittent DTR sensor or its wiring.

Steve

 

Yeah, well now it won't upshift and speedo won't function period. Ever. It's a long ride to the Ford service center in first gear so what does intermittent DTR sensor mean?
Is it a part that can be looked up? Is it internal or external of the transmission? I understand and appreciate your hanging parts / diagnostic data point analogy Steve, but I have a time frame where it might be difficult to get to a Ford dealer before I need my truck. At 165 thousand miles it might be little risk and some preventative maintenance to "hang parts" if there is a remote chance it remedies the problem. I know it might not be that simple, but I hope it's worth it. I've had some limited success with electronics on cars, especially when you're out on the road and have no choice. Old school wrench turning just doesn't work here.
Thanks,
Stephen

 

OK, 'found out that DTR means digital transmission range sensor and is located on the outside of the transmission at the manual lever thanks to emtabmm searching an old thread. Can you be more specific as to where? Can it be unplugged and replaced with a new one? Is it usually and readily available from the dealer? I'd take it there but on short notice it would be tough because I need to drive 21/2 hours on business Monday. Also, 'would have to take backroads in first gear about twenty miles to get to dealer.
Looks like a rent a car if I can't use the next few days "small window of opportunity" to figure this out.
Thanks

 

Ford's DTR aka Manual Lever Position Senors (MLPS) aka Neutral Safety Switch (NSS) have a deserved bad name at transmission shops.

Dealer should have them. They're also available aftermarket. Call your local parts store.

The switch is relatively easy to replace. Place tranny in neutral. Set ebrake and block the wheels. Disconnect the shifter cable from the arm. Remove the arm. Remove two bolts and the switch. Install the new switch using dielectric grease and loosely install the two bolts so the switch body can still rotate. Reinstall the arm and the shifter cable.

Adjustment without the special tool isn't very hard. Turn ignition to RUN. Place shifter lever into REVERSE. Have someone watch your backup lamps while you rotate the switch to find the spot where the lamps are on. Tighten mounting bolts. Verify starter works in both P and N positions.

I am concerned about the lack of a speedometer function. There may be other issues involved.

BTW, place the shifter in 2nd gear and see if you get manual 2nd only. You might be able to go 45 mph.

Steve

 

Great information, Steve. Thanks alot. I'll give it a shot. I'll try that 2nd gear limp home too. Thought speedo was linked to computer or shift controls. I guess not.
Thanks again,
Stephen

 

Hi Steve my name is Mike, I see that you have a lot of knowledge with these issues. I have a few questions about my 2004 f250 SD XLT 5.4L. So I replaced my trans range sensor and I still sometimes get the P0705 code. I was also getting a P0720 output speed sensor code, so I replaced that as well and I still get that code sometimes too, but that isnt all. A few months ago the truck just started stalling when in gear/ low idle, running rough and throwing P0171 too lean bank 1 and P0174 too lean bank 2 codes. I smoke tested and found 2 evap leaks that I fixed. Truck ran well for 10-15 mins and started stalling/power loss again, then someone said it could be the fuel pump relay or fuel pump but I did a new fuel pump a little over a yr ago and a new fuel filter 3 days ago. So then I replaced the fuse box bc fuel relay is built in, truck ran beautiful for 10-15 mins then started stalling in gear and low idle/power loss again and im getting P0720 and P0171 codes now. Im so confused and frustrated, any idea what my problem is? Could all these things be related, maybe a wiring issue? I keep thinking I fix it and i haven't yet. Anything you could think of would be GREATLY APPRECIATED! Thank you. -Mike