94 bronco, transmission, converter issue
#1
94 bronco, transmission, converter issue
Its either the tranny or the converter. Is there a way to test them? I am leaning towards the converter because the bronco and tranny do fine until it is warm then slips.
The fluid is clean and maybe 1/2 qt over full currently.
Some days it never acts up, other days it acts up in 8 miles or more. It does fine when i use it as a 3 speed, locked in first-2-3...OD is the biggest issue, will be going fine then rev like i hit neutral. At its worst, from a stop in OD and I mash the gas, it shifts fine (maybe a touch firm) 1-2-3...its the easy driving where it touches neutral then bangs into gear.
No codes thrown.
Whats next test? toss in a new conveter or tranny shop?
The fluid is clean and maybe 1/2 qt over full currently.
Some days it never acts up, other days it acts up in 8 miles or more. It does fine when i use it as a 3 speed, locked in first-2-3...OD is the biggest issue, will be going fine then rev like i hit neutral. At its worst, from a stop in OD and I mash the gas, it shifts fine (maybe a touch firm) 1-2-3...its the easy driving where it touches neutral then bangs into gear.
No codes thrown.
Whats next test? toss in a new conveter or tranny shop?
#2
Here is my story on that...https://www.ford-trucks.com/forums/9...lp-please.html
Could be MLPS or VSS but in my case it was the PCM
Could be MLPS or VSS but in my case it was the PCM
#5
#6
I second everything Kem said.
Calibrate your speedometer if you are not travelling a mile per road signs every sixty seconds travelling exactly 60mph.
Codes...you are aware that KOEO shows first, twice...then a spacer followed by CM (continuous memory codes) twice? The CM will give you a hint about your transmission issues.
While checking codes, correct engine problems first. The E4OD transmission is not happy unless the engine is.
Calibrate your speedometer if you are not travelling a mile per road signs every sixty seconds travelling exactly 60mph.
Codes...you are aware that KOEO shows first, twice...then a spacer followed by CM (continuous memory codes) twice? The CM will give you a hint about your transmission issues.
While checking codes, correct engine problems first. The E4OD transmission is not happy unless the engine is.
#7
tires have been on for 15 months already. aside from one jeep, I have never reprogrammed a truck speedo because I went with a larger tire. that is not saying I have been right to do it that way. My excursion has 37s and has not been recalculated either and have had no issues with it.
Is there an easy way to re-program the speedo?
Is there an easy way to re-program the speedo?
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#10
After the test drive, I attempted to pull codes again. The last time when I said it was clean, i could have said I got only 2 codes; 111 and 539 I think which is because the AC was on. This time I pulled codes and got one from the past 628 (converter clutch lock up) which is why I thought that the converter needs replacement. I also got 452 (Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles). Would I get 452 from reprogramming the PSOM? I disconnected the battery and will drive it again tomorrow for a while and pull codes after to see if I get the same 2 or something different again.
The more I read on this, often dealerships are blaming the ABS for the VSS code and often it is not the ABS. My ABS light is on becasue the front sensors are disconnected. I do not intend on replacing them either. They have been off since the tires were installed and the front end was rebuilt.
Any ideas?
#12
#13
drove about 50 miles today. acted up once. pulled codes and only got the 452 code for vss/psom.
if the front sensors could be the issue, why did it not act up immediately? it worked perfectly for almost 7000 miles since the front rebuild.
I can get the front sensors for about $35 each, easier than attemptign the junk yard. the rear VSS is about $25 or so.
Does the brand matter? Dorman? Bosch? ACD? I did not find a motorcraft part for these. What would you do next? VSS? front sensor? cruise works fine, no other issues so I am not thinking it is the PSOM. Maybe the MPLS or MLPS whichver is on the tranny...if the front sensors fix it, I will haved mixed emotions as I removed them myself and it did not screw anything up quickly. the sensors were trashed as I removed them from the hubs as they were not removable without damage...so into the trash they went.
if the front sensors could be the issue, why did it not act up immediately? it worked perfectly for almost 7000 miles since the front rebuild.
I can get the front sensors for about $35 each, easier than attemptign the junk yard. the rear VSS is about $25 or so.
Does the brand matter? Dorman? Bosch? ACD? I did not find a motorcraft part for these. What would you do next? VSS? front sensor? cruise works fine, no other issues so I am not thinking it is the PSOM. Maybe the MPLS or MLPS whichver is on the tranny...if the front sensors fix it, I will haved mixed emotions as I removed them myself and it did not screw anything up quickly. the sensors were trashed as I removed them from the hubs as they were not removable without damage...so into the trash they went.
#14
I would start with a Motorcraft VSS. O'Reilys sells Motorcraft. Removing the old one and cleaning the tip may cure it but I would replace it while you have it out. Clean and dielectric grease the connector of course.
Disconnect the battery while you do it then after about 20-30 minutes of driving pull KOEO and CM codes.
Disconnect the battery while you do it then after about 20-30 minutes of driving pull KOEO and CM codes.
#15
the vss is also known as the rear abs sensor. sometimes the parts store will get confused and sell you the incorrect part if you call it vss.
the ABS system is tied into to so much that it wouldnt suprise me if this takes care of the rest of your issues. I would start with the front abs sensors and just clean off the rear sensor.
the ABS system is tied into to so much that it wouldnt suprise me if this takes care of the rest of your issues. I would start with the front abs sensors and just clean off the rear sensor.