Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name isXXXXX does the engine rev and pull ok, do you think the concern is engine performance related or transmission related?
Hi steve my name isXXXXX you for your time. The engine feels great
It feels transmission related
Does it feel like the throttle is being cut back?
not at all
Is there any noise associated with this problem?
no noise at all
the engine will rev to 5K
if I feather the throttle I can make the car get up to 55mph
And the wrench light doesn't come on?
no wrench light at all, system pass from PCM to TCM
CVT pressure are at spec also
Are you a tech?
Let me do some research and see if I can find anything on the ford system, can I have the VIN?
I have checked with OASIS for TSB ssm
steve have you worked on many cvt's? this is my first
I have worked on less than a dozen.
they are very diffrent
I am not finding any real solid information of the Ford site, since the wrench light does not come on and no codes are set, have you driven this at least 3 times to see if a trouble code will set?
I thought maybe a problem in the PTO
yes i have and still no trouble codes, very weird
Did you see the tsb about wire harness chafe by ac lines at rear of engine?
If you load it in gear, like power brake, not moving, does the trans slip and go to 5000?
is the tsb like the one for the older windstars
when i power brake it forward or revere, the engine loads up to around 1500-2300rpm
almost like the computer is stopping it from breaking free, but no slipping
CVT TSB click here
I would look at this harness at see if you can see anything there, since there are no codes, I having a hard time believing the trans is at fault, if the trans was slipping the wrench light should come on immediately.
I can opt out if you like and see if any body else has ran into this.
steve i will look at harness in the morning, i missed that tsb! i agree about the transmission
Ok sounds good
i ll write you back once i ve looked at it. Thank you again
I would look at the throttle body pids while driving also just to be sure everything is ok there also.
ok i will do that also, i have driven many cvt's and this one is so not right
Ok, the bad part is I am online only after 6pm central.
and a lot of work putting a used one in and finding out it does the samething
Been there that sucks.
i write you after 6 your time
Thank you Frank, we'll talk tomorrow.
I ll tell you after seeing the internal filter behind the cooler lines filled with metal! its amazing
ok thank you steve
Go ahead and ask your questions and I will respond as fast as I can, we are kind of busy tonight.
Steve I did perform that TBS. no luck all wires checked ok. I even pulled the cowl panel up to check wires to PCM and all looked ok.
Ok, let me reread this.
Okay, did the first cvt do exactly the same thing as the second?
yes it did
at first it did not seem that way but after driving it for a bit. I have to say yes
Do you still think it is trans related, or do you think it may be a driveability concern?
i don t think its driveability concern because the way the car runs. The engine feels good and strong
i was really praying it was going to be that TSB
If you want I can open this up for other experts and see if someone else has ran into a similiar concern.
that would be awesome steve, thank you
Okay thanks for your time.
Hi JACUSTOMER-jfju2k99-. Thank you for asking your question on JustAnswer.
It sounds like you guys have it pretty well covered. If the stall speed in D is that low then I would say the forward clutch is holding adequately. If you have an IDS or a way to display trans pids I would take a look at commanded variator ratio and actual variator ratio while the problem is occurring. This would tell you if there is any actual chain slip in the variators. These pids are VAR_CMD and VAR_MES. The measured should be the same as the commanded. I would also do the same with the converter lock. For this you monitor the TCC current command and actual. After TCC amp gets anywhere above 300ma then monitor TSS_SRC and RPMTCM they should be equal anytime TCC_AMP is over 300MA. If all of these are ok then I doubt the issue is in the tranmission. In my experience with these the TCM is very sensitive to ratio errors and would most certainly at least be setting a general ratio code such as P0730. How much metal was in the HP filter? was it shiny like aluminum if rinsed off or darker like steel? I have seen these filters pretty loaded with fine aluminum without any trans concerns in the past. What are the actual pid pressures while the problem is occurring for pids PCA,PCB,PCC ???
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