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Ford Escape shift / Overdrive issues
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fordPOS2007
Novice
Jun 25, 2012, 1:40 PM
Post #1 of 15
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Ford Escape shift / Overdrive issues
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I have a Ford 2007 Escape 4cy 2.3
The overdrive light is on and flashing. The on-board diagnostic light is on because it has sensed a problem.
While driving the car jerk or shifts heavily while its going into gear. Once you get to the last gear it drives fine.
We took it to autozone and got 2 codes - P0715 & P0717.
A wanna be mechanic told us to replace the turbine shift speed sensor that sits on the top of the trans.
So we did that. I picked up the car today and nothing is fixed. Its still doing the same thing.
Any ideas????
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Discretesignals
Ultimate Carjunky
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Jun 25, 2012, 3:29 PM
Post #2 of 15
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Re: Ford Escape shift / Overdrive issues
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Did they bother checking the sensor's electrical circuits and seeing if it is generating a signal using a lab oscilloscope at the computer's connector? Did they monitor the TSS PID with a scan tool to see if it is even generating a signal at all?
Just because there is a turbine speed sensor input and signal loss code doesn't always mean the sensor is the culprit, as you found out.
The TSS is a variable reluctance sensor that generates it own voltage depending on the speed of the turbine exciter. The signal is an AC sine wave that changes in amplitude and frequency.
If you have no signal at the computer, but have signal at the sensor, you have a circuit problem.
If you have a signal at the computer, but the datastream PID doesn't register the TSS signal, you could have a PCM problem
If you have no signal at the sensor, either the sensor is a defect or there is a problem with the exciter ring.
I am surprised they even let it go and didn't verify the fix.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jun 25, 2012, 3:30 PM)
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fordPOS2007
Novice
Jun 25, 2012, 3:35 PM
Post #3 of 15
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Re: Ford Escape shift / Overdrive issues
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No they didn't bother to verify anything at the place I had it repaired. My boss referred me to this guy.
He just put the sensor on, and didn't even bother to drive the car to see if it was fixed.
I went to pick it up, paid the guy and drove off and had to turn around because nothing was fixed.
Now he says he's not a transmission guy but I shouldn't drive the car and if I want to bring it back he can pick it up on Friday.
What the heck am I supposed to do until Friday. My husband called autozone and they said the first sensor was an "Input" sensor and now we should order the "output" sensor.. yada yada yada. Next they'll tell me to order a flippin trans.
I just don't know what to do next.
Thanks for your reply.
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Discretesignals
Ultimate Carjunky
/ Moderator
Jun 25, 2012, 3:59 PM
Post #4 of 15
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Re: Ford Escape shift / Overdrive issues
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It is considered a comeback and they have to diagnose it for free this time, but considering how they handled the last repair, I would be a little apprehensive. I think that you should get a second opinion.
Hmmm....sounds like you ran into a parts swapper. There are two types of mechanics that you'll run into when it comes to diagnosing electrical and drive-ability problems.
Person one is a non skilled tech, that changes a part because of a trouble code that has the part's description in it. That person may not have the knowledge or skills for diagnosing electrical problems. They roll the dice and let the vehicle's owner test the part they changed out to see if it is a viable fix. If it comes back, then they changed the wrong part.
Person two is of course an experienced technician that actually is able to conduct tests on circuits and sensors to deduce where the problem is. Not every tech is perfect, but most strive for perfection. A good tech should be able to show you what kind of tests they performed to determine where the fault is.
The parts swapper has a high comeback ratio compared to a experienced technician. Experienced drive-ability techs are worth gold in the automotive industry and somewhat hard to find these days.
Both of them codes are set because the computer is a having a problem with the turbine speed sensor signal. Watching the information from the transmission data stream will verify if the TSS is having signal problems or not. Might be a good idea to take it to a shop that has the scan tool that can read that information and equipment to diagnose it properly.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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fordPOS2007
Novice
Jun 25, 2012, 4:03 PM
Post #5 of 15
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Re: Ford Escape shift / Overdrive issues
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Thanks, at this point I don't have a choice but to take it somewhere else. I'm not comfortable taking it back to the other guy.
I just hope this next bill won't be an arm & a leg.
Thanks again.
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Hammer Time
Ultimate Carjunky
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Jun 25, 2012, 4:59 PM
Post #6 of 15
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Re: Ford Escape shift / Overdrive issues
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You might want to bring that bill to the first shop for then to reimburse you since they charged you for something it didn't need. It's worth a shot.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Sidom
Veteran
/ Moderator
Jun 25, 2012, 9:53 PM
Post #7 of 15
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Re: Ford Escape shift / Overdrive issues
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But Tech #1 does the diag for FREE!!! and ANNNNNNNNDDDD he is quick quick. Man he's got the diagnosis in 2 shakes of a lambs tail......
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Hammer Time
Ultimate Carjunky
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Jun 26, 2012, 3:11 AM
Post #8 of 15
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Re: Ford Escape shift / Overdrive issues
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My wrong advice is always free.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
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Jun 26, 2012, 5:27 AM
Post #9 of 15
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Re: Ford Escape shift / Overdrive issues
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Who was the "wanna be" mechanic - Autozone or the place that replace this sensor? If you just asked to have the sensor replaced that wasn't asking to diagnose it but to do as requested. Not testing that it did or didn't work isn't my idea of of good work or total lack of communication,
T
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Discretesignals
Ultimate Carjunky
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Jun 26, 2012, 7:43 AM
Post #10 of 15
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Re: Ford Escape shift / Overdrive issues
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I really don't think I have run into a customer that had requested me to change an electrical part no if ands or buts that didn't have any visual damage to it. Even if I did change it at the customers request I would verify it was actually working before handing it off. Some of those parts are expensive or expensive to replace and most customers want to know that it is actually bad before changing it out.
I would say to the customer, "Mam or Sir, I changed your part as you requested, but wanted to let you know that it doesn't work which will be notated on the repair order." I guarantee they'll ask, "Why doesn't it work?".
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jun 26, 2012, 7:47 AM)
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Tom Greenleaf
Ultimate Carjunky
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Jun 26, 2012, 9:23 AM
Post #11 of 15
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Re: Ford Escape shift / Overdrive issues
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Happened once while working for another place not my own. Customer had pre-diagnosed his problem, called me "boy" (not a cool thing to do) and probably provided the item still not a good idea.
It didn't fix the issue and bill said that the item was replaced at customer's request. I had the right part on hand after parts stores closed ready to go when he returned for the car and noticed it wasn't charging was the issue a two bolt regulator on firewall.
I shouldn't have done it that way but it was the way I was approached and did as ORDERED! No real matter in that exact case as all was well instantly before he left and he realized it really was his fault insisting what was the problem and I did represent that shop well as my employer,
T
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fordPOS2007
Novice
Jun 26, 2012, 11:18 AM
Post #12 of 15
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Re: Ford Escape shift / Overdrive issues
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The biggest problem is, YES we asked him to replace the sensor. Yes we thought that would fix it. I told him to let me know if that takes care of it. All he did was replace it and park the car. At the very least he could have said after having the car ALL day is "Hey I replaced what you asked for but that didn't fix it, would you like me to run a diagnosis on it for this fee $___ and I will tell you what the problem is". But no he didn't even bother. He just parked it and blew me off when I questioned him on it.
My husband is going through chemo so I don't have a ton of money to take this in and have someone charge me $100+ and then I still can't afford to fix it. We going to take a gamble and change the output sensor which was inexpensive and I am praying that it will work.
Question is NOW....is the output transmission shift speed sensor a bitch to change or what?
HELP
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fordPOS2007
Novice
Jun 26, 2012, 11:51 AM
Post #14 of 15
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Re: Ford Escape shift / Overdrive issues
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Well my boss referred me to him but I completely understand your point. I just thought he would have taken it a step further atleast when he was putting my car back on the street he could tell the same warning lights were on. The least thing he could have done is said hey do you want me to investigate it further. When he called and said it was done. I thought it was fixed. Then he blew me off and said He "might" be able to look at it Friday.
Its a lesson learned. I just hope this next sensor works.
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Tom Greenleaf
Ultimate Carjunky
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Jun 26, 2012, 2:51 PM
Post #15 of 15
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Re: Ford Escape shift / Overdrive issues
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Followup on my comment: It's much like bringing your own food to a restaurant, tell them how to cook it and complain that it isn't right?! In fairness but w good friends in the trade I bring my own parts for things that really need two people to be efficient and would never hold it to them if I diagnosed something and told them what and still more apt to ask if they agree.
Nobody wants to fail at a fix. That time was unique and the way I was treated played in - still I could have suggested would you like me to test out your idea on what is the problem - then it would be my responsibility,
T
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