macanic

you did not properly index the speed sensor in the tcase

Dave wrote:

> Hello.
>
> Well I finally got my 98 TJ back together the other night, after having
> the transmission & transfer-case out and have no speedo now. I checked
> the speedometer connection on the transfer-case, looks good, took it
> off, put it back on.. Jiggled wires, nothing. I'm going to look at the
> FSM tonight, look where those 3 wires go, and see that I have
> continuity all the way through..
>
> The O-Ring around the speedometer sensor was leaking pretty bad I found
> out, and when I pulled the speedo-gear out, it was pretty dry in
> there.. a SMALL little spot of ATF could be seen. So, I drained out all
> the old fluid, and put new stuff in, so now the speedo gear is actually
> being lubricated. (when I pulled it out after realizing it wasn't
> working, the yellow gear had atf all over it. Teeth look fine.
>
> Any ideas what might be the problem?
>
> I assume it's related, but my engine stalled twice after I started
> driving home from my friend's where we were working on the jeep. upon
> Decel, I push in the clutch, and the RPM's just steadily drop slowly
> until the engine's out. Could the lack of a speedometer confuse the
> computer and let the engine stall? On my way into work this morning, it
> happened pretty consistently.
>
> Then the CHECK ENGINE light came on about a mile from my house. I don't
> have access to a code-reader yet, so no word what that might be, but I
> had a MIL for my "downstream o2 sensor" about a year and a half ago,
> and it magically went away a day later, never to return.. so maybe
> after knocking my exhaust around while doing all this work, the o2
> sensor is finally crapping out on me..
>
> Thanks,
> -Dave

macanic

you did not properly index the speed sensor in the tcase

Dave wrote:

> Hello.
>
> Well I finally got my 98 TJ back together the other night, after having
> the transmission & transfer-case out and have no speedo now. I checked
> the speedometer connection on the transfer-case, looks good, took it
> off, put it back on.. Jiggled wires, nothing. I'm going to look at the
> FSM tonight, look where those 3 wires go, and see that I have
> continuity all the way through..
>
> The O-Ring around the speedometer sensor was leaking pretty bad I found
> out, and when I pulled the speedo-gear out, it was pretty dry in
> there.. a SMALL little spot of ATF could be seen. So, I drained out all
> the old fluid, and put new stuff in, so now the speedo gear is actually
> being lubricated. (when I pulled it out after realizing it wasn't
> working, the yellow gear had atf all over it. Teeth look fine.
>
> Any ideas what might be the problem?
>
> I assume it's related, but my engine stalled twice after I started
> driving home from my friend's where we were working on the jeep. upon
> Decel, I push in the clutch, and the RPM's just steadily drop slowly
> until the engine's out. Could the lack of a speedometer confuse the
> computer and let the engine stall? On my way into work this morning, it
> happened pretty consistently.
>
> Then the CHECK ENGINE light came on about a mile from my house. I don't
> have access to a code-reader yet, so no word what that might be, but I
> had a MIL for my "downstream o2 sensor" about a year and a half ago,
> and it magically went away a day later, never to return.. so maybe
> after knocking my exhaust around while doing all this work, the o2
> sensor is finally crapping out on me..
>
> Thanks,
> -Dave

macanic

you did not properly index the speed sensor in the tcase

Dave wrote:

> Hello.
>
> Well I finally got my 98 TJ back together the other night, after having
> the transmission & transfer-case out and have no speedo now. I checked
> the speedometer connection on the transfer-case, looks good, took it
> off, put it back on.. Jiggled wires, nothing. I'm going to look at the
> FSM tonight, look where those 3 wires go, and see that I have
> continuity all the way through..
>
> The O-Ring around the speedometer sensor was leaking pretty bad I found
> out, and when I pulled the speedo-gear out, it was pretty dry in
> there.. a SMALL little spot of ATF could be seen. So, I drained out all
> the old fluid, and put new stuff in, so now the speedo gear is actually
> being lubricated. (when I pulled it out after realizing it wasn't
> working, the yellow gear had atf all over it. Teeth look fine.
>
> Any ideas what might be the problem?
>
> I assume it's related, but my engine stalled twice after I started
> driving home from my friend's where we were working on the jeep. upon
> Decel, I push in the clutch, and the RPM's just steadily drop slowly
> until the engine's out. Could the lack of a speedometer confuse the
> computer and let the engine stall? On my way into work this morning, it
> happened pretty consistently.
>
> Then the CHECK ENGINE light came on about a mile from my house. I don't
> have access to a code-reader yet, so no word what that might be, but I
> had a MIL for my "downstream o2 sensor" about a year and a half ago,
> and it magically went away a day later, never to return.. so maybe
> after knocking my exhaust around while doing all this work, the o2
> sensor is finally crapping out on me..
>
> Thanks,
> -Dave

Matt Macchiarolo

That's probably true for an electromagnetic transducer speed sensor but not
for a Wrangler's gear-driven sensor. FWIW I think the Rubicon has an EM
transducer as opposed to the gear-drive.

"Troy" <troy@ .> wrote in message
news:TKCdncSutKVp7jrfRVn-qA@comcast.com...
>I remember my dealership's service manager telling me the computer had to
>be reprogrammed for the speedo change. HA!
>
> Actually most of the things I had to call them for they turned out to be
> totally wrong about.
>
> I trust you guys more than them. :)
>
> Troy
>

Matt Macchiarolo

That's probably true for an electromagnetic transducer speed sensor but not
for a Wrangler's gear-driven sensor. FWIW I think the Rubicon has an EM
transducer as opposed to the gear-drive.

"Troy" <troy@ .> wrote in message
news:TKCdncSutKVp7jrfRVn-qA@comcast.com...
>I remember my dealership's service manager telling me the computer had to
>be reprogrammed for the speedo change. HA!
>
> Actually most of the things I had to call them for they turned out to be
> totally wrong about.
>
> I trust you guys more than them. :)
>
> Troy
>

Matt Macchiarolo

That's probably true for an electromagnetic transducer speed sensor but not
for a Wrangler's gear-driven sensor. FWIW I think the Rubicon has an EM
transducer as opposed to the gear-drive.

"Troy" <troy@ .> wrote in message
news:TKCdncSutKVp7jrfRVn-qA@comcast.com...
>I remember my dealership's service manager telling me the computer had to
>be reprogrammed for the speedo change. HA!
>
> Actually most of the things I had to call them for they turned out to be
> totally wrong about.
>
> I trust you guys more than them. :)
>
> Troy
>

Matt Macchiarolo

That's probably true for an electromagnetic transducer speed sensor but not
for a Wrangler's gear-driven sensor. FWIW I think the Rubicon has an EM
transducer as opposed to the gear-drive.

"Troy" <troy@ .> wrote in message
news:TKCdncSutKVp7jrfRVn-qA@comcast.com...
>I remember my dealership's service manager telling me the computer had to
>be reprogrammed for the speedo change. HA!
>
> Actually most of the things I had to call them for they turned out to be
> totally wrong about.
>
> I trust you guys more than them. :)
>
> Troy
>