hard downshift
Thread Starter
|
Mountain Pass
Joined: Jan 2013
Posts: 106
Likes: 0
hard downshift
I picked up a '95 F-150 last weekend (161K, 351W) as a spare vehicle. Seems a bit firm on the downshifts when decelerating but fine on the upshifts. Almost a "bang" like a broken mount. I looked underneath and nothing is obviously broken. Was going to get a floor jack underneath and check but before I did, I thought I would as those more familiar with Ford trucks for an opinion or what else to look into. This is basically a spare to run to the airport (I travel for work) if it snows, get mulch in the spring, maybe haul stuff to the dump, etc so I'm not looking to make it 100% but I'd still like to know what might be going on.
Thanks
Thanks
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
That trans is completely computer controlled so step 1 is pull the codes. If you get an all clear code 111 then go back to looking for broken engine or trans mounts or worn out driveshaft U -joints, you'll need to remove the D shaft to properly inspect the joints. If however you get any codes from the computer make repairs to clear those codes, a single PCM controls the whole powertrain so all sensors affect transmission operation.
Thread Starter
|
Mountain Pass
Joined: Jan 2013
Posts: 106
Likes: 0
That trans is completely computer controlled so step 1 is pull the codes. If you get an all clear code 111 then go back to looking for broken engine or trans mounts or worn out driveshaft U -joints, you'll need to remove the D shaft to properly inspect the joints. If however you get any codes from the computer make repairs to clear those codes, a single PCM controls the whole powertrain so all sensors affect transmission operation.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
No your truck is OBD1, see here for code retrieval procedure..Fuel Injection Technical Library » How To Run a Self-Test
Thread Starter
|
Mountain Pass
Joined: Jan 2013
Posts: 106
Likes: 0
No your truck is OBD1, see here for code retrieval procedure..Fuel Injection Technical Library » How To Run a Self-Test
Thread Starter
|
Mountain Pass
Joined: Jan 2013
Posts: 106
Likes: 0
No your truck is OBD1, see here for code retrieval procedure..Fuel Injection Technical Library » How To Run a Self-Test
KOEO -
114 - ACT out of self test range 0.3 to 3.7 volts.
116 - ECT out of self test range 0.3 to 3.7 volts.
636 - TOT sensor voltage out of self test range.
From the CM
334 - DPFE or EVP circuit above the closed limit of 0.67 volts.
452 - Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.
Knowing that the other night, the linkage slop (presumably) caused the OD light to flash and it to get whacked out. Should I clear the codes and drive a bit to re-read? What do you make of the above combo of codes?
Thread Starter
|
Mountain Pass
Joined: Jan 2013
Posts: 106
Likes: 0
Looks like 5th time is a charm. I've got -
KOEO -
114 - ACT out of self test range 0.3 to 3.7 volts.
116 - ECT out of self test range 0.3 to 3.7 volts.
636 - TOT sensor voltage out of self test range.
From the CM
334 - DPFE or EVP circuit above the closed limit of 0.67 volts.
452 - Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.
Knowing that the other night, the linkage slop (presumably) caused the OD light to flash and it to get whacked out. Should I clear the codes and drive a bit to re-read? What do you make of the above combo of codes?
KOEO -
114 - ACT out of self test range 0.3 to 3.7 volts.
116 - ECT out of self test range 0.3 to 3.7 volts.
636 - TOT sensor voltage out of self test range.
From the CM
334 - DPFE or EVP circuit above the closed limit of 0.67 volts.
452 - Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.
Knowing that the other night, the linkage slop (presumably) caused the OD light to flash and it to get whacked out. Should I clear the codes and drive a bit to re-read? What do you make of the above combo of codes?
Thread
Thread Starter
Forum
Replies
Last Post
spudlicker
1987 - 1996 F150 & Larger F-Series Trucks
17
Sep 28, 2016 08:36 AM
jdemaris
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
6
Jul 15, 2007 10:23 PM
paradiddle
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
11
Feb 10, 2004 07:42 PM
