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Ok. I replaced the TPS for a new one, but it is still shifting late. Back to square one.. :(

That's a good post. I had checked the TPS voltage at idle and WOT and found them to be ok, but as you say, there could be a spike somewhere in between. I'll buy a new one and replace it

I replaced the VB and did the relearn thing, but it still shifts late (above 5000 rpm)

LATE UPDATE: I replaced the VB for a reman... Error codes are gone. But it still shifts late at above 5000rpm and for the life of me, can't figure out why. Any ideas, please?

I've found that Cruise Control will disengage if the TPS reaches 72.5%

I will drop the pan and check the internal wiring and solenoids. If any solenoids are bad, I think I will go for a remanufactured VB

Yes, I read the Tranny VB Rebuild diary and saw how to test the solenoids but I am hoping I could do that without having to drop the pan and ATF bath (which I just did less than 3000 miles ago). Does someone have the pinout on the tranny electrical connector? That would help

Thanks. I sincerely appreciate your feedback. If this was the case, then why would these DTC not appear if the OSS is disconnected? Would replacing the solenoids fix the high rpm shift points? I'm not affraid of buying new solenoids if I have to, but I don't want to buy more parts without being...

UPDATE: The P1714 has disappeared and a new DTC is raised (P1716). I feel like I'm shooting a moving target. I live in Spain and there aren't any other Ex to compare with. I rely heavily on you US guys for comparison and experience. If someone can shed some light on this, please I've tested...

Help please?

I'll add some for details: 1. All (fwd and reverse) gears work regardless with or without the OSS connected. It's just that without the OSS if doesn't downshift on kickdown and struggles uphill (shuddering). With the OSS, it downshifts on kickdown instantly but takes coaxing to get into the...

My Explorer is (apparently) an early 98 with the V6 SOHC engine and the OSS in the TC, which was broken and disconnected (I used to get a P0720 DTC). I bought a replaced the broken OSS and connected it. The result is the P0720 is now gone, but it now shifts really late (around 5000-6000rpm)...

UPDATE: So, replacing the broken speed sensor (OSS?) and connecting it fixes the power problems but now gears shift really late (around 5000-6000rpm) sometimes even hitting the rev limiter for a few seconds. And after a 20 mile drive I rescanned for DTCs and found a P1715 and a P1714. If I...

Although I was told my Ex didn't need it, I replaced the broken sensor on the TC and now it suddenly has recovered all its oooomph. However it's not shifting right from 1st to 2nd, 3rd, 4th and haven't managed to get it into 5th (even at 93mph and letting go of the accelerator). It does shift...

Your post has me thinking. Although I definitively do not have a sensor on the trans, there is a sensor (broken) in the rear of the TC near the rear drive shaft, which I was told was unused in my Explorer. Maybe this is the origin of my problem. Is there a way to tell what specs an Ex has when...

Snuke, my scanner tells me that what should be WOT is actually 94%. No so bad. I'm still working to figure out the P0720 DTC, but I'll check out the zip-tie trick after that ;)

Thanks bobflood! I followed your link and found the wiring diagrams. It would seem the VSS output signal to the ECM is #10. Valuable! chrisjones: My Ex is a 4x4. I'm starting to believe the problem is in the wiring. I'll take some time this weekend to check it with my multitester. Now that I...

HI, I came here looking for the ABS connector wiring because I have a problem with the VSS reading on a 98 Explorer 4x4. My connector doesn't have pin #19. Are the other ABS connector layouts?

Please feel free to jump in at any time and correct me if I'm wrong. I've read elsewhere the rear diff sensor wires run to ABS (in the engine bay) and from there signal the ECM (via pin #57). So I am looking for an ABS wiring diagram

Removed it by drilling out two rivets. The ECM looks OK. I mean nothing is burnt. So I am now looking at the wiring (again). Does anyone have a wiring diagram for this rear diff sensor? I saw two wires coming out and going along the fuel tank to just under the passenger seat and then...

Thanks Chris. But I mean a black steel shroud that covers the center bolt, connector and rubber boot. I'm stumped. I'll take a photo and upload it later.

The ECM in the engine bay is covered/protected by a sort of housing around it. How is it removed? It doesn't seem to have any nuts or bolts to hold it in place. TIA Chris

I've arranged to meet a mechanic with ECM programming equipment on Wednesday. I guess I'll know more after that :)

Well it could be. I think the centre diff is from a 97 and discovering that the key won't open the doors leads me to believe someone swapped the ECM sometime in the past, but couldn't be bothered with the door locks. Probably got it from a scrapyard.

Mine definitely doesn't have it. It's a "09/98"