Help! Jeep Cherokee can't go over 20mph!!!

I guess I could ask my dealer.
KH

"Steve m..." <[email protected]> wrote in message
news:[email protected]...
> Those engine diagnostics monitors were rare due to it's AMC design. I
> would imagine even now anywhere short of a dealer will be tough to locate
> one to "borrow".
>
> Steve m..
>
> "Kevin in San Diego" <[email protected]> wrote in message
> news:bxO6b.47273$Qy4.23187@fed1read05...
> > Yea, no one seems to have one.
> > KH
> >
> > "BB" <[email protected]> wrote in message
> > news:[email protected]...
> > > Some auto parts stores have them for 'rent', some don't even charge
> > anything
> > > for it, just a deposit untill you return it. Check with the more
common
> > > stores, ie: autozone, checker, etc.
> > > BB
> > >
> > > "Kevin in San Diego" <[email protected]> wrote in message
> > > news:jE66b.45776$Qy4.29312@fed1read05...
> > > > Where can I get my hands on one of those temporarily I wonder?
> > > > KH
> > > >
> > > > "Mike Romain" <[email protected]> wrote in message
> > > > news:[email protected]...
> > > > > My book says a DRB 11 tool can read the 88's. The V6's had a self
> > > > > diagnostics and 91 to 97 have them.
> > > > >
> > > > > Mike
> > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > 88 Cherokee 235 BFG AT's
> > > > >
> > > > > Kevin in San Diego wrote:
> > > > > >
> > > > > > No the 88 isnt really scannable. I dont think you can even find
a
> > > > daignostic
> > > > > > tool for the port on that thing.
> > > > > > KH
> > > > > >
> > > > > > "Clem" <[email protected]> wrote in message
> > > > > > news:[email protected]...
> > > > > > > '88 was still amc.. too bad.
> > > > > > >
> > > > > > > If it was chrysler you could scan the computer very easily for
> > > codes,
> > > > > > which
> > > > > > > would tell you whether it's the TPS or not.
> > > > > > >
> > > > > > > AMC is probably scannable... check out www.batauto.com and
find
> > the
> > > > > > trouble
> > > > > > > code section.
> > > > > > >
> > > > > > >
> > > > > > > "Dan Lefrancois" <[email protected]> wrote in
message
> > > > > > > news:[email protected]...
> > > > > > > > 
> > > > > > > > : Hey everyone! I need some help. Ok, the long and short of
it
> > is
> > > > that
> > > > > > > > : my 88 Jeep Cherokee Pioneer won't go over 20mph. It has
the
> > 4.0
> > > L6
> > > > and
> > > > > > > > : it's an automatic.
> > > > > > > >
> > > > > > > > : Now, 3 days ago it was fine. Everything ran great. Then, I
> > > decided
> > > > > > > > : that I wanted a better air intake system, so I
disconnected
> > the
> > > > filter
> > > > > > > >
> > > > > > > > I had a very very similar problem (although not caused by
any
> > > > mechanical
> > > > > > > > changes). I thought my tranny was a goner. Turns out it was
> the
> > > TPS
> > > > > > > > sensor. Simple to fix. I'd recommend you try this first,
> before
> > > > looking
> > > > > > at
> > > > > > > > the tranny.
> > > > > > > >
> > > > > > > > Dan
> > > > > > >
> > > > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Jim - Sounds like your tranny - are you sure you didn't accidentally
disconnect some vacuum hose leading to the tranny during your work? You may
want to put everything back to stock and see if the problem goes away. (If
you covered this, I apologize - at my age, don't have the time to read the
whole story). Maybe, your new cone filter drops the vacuum so much (much
more free flow) that it confuses the tranny or the electronicals (heh, that
is what us old timers call them) that it does not know what gear to put the
tranny in. Can't remember - yeah I know it's old age so don't tell me -
when did Chrysler buy Jeep? - is it an electronically controlled Chrysler
tranny or one of the old Jeep trannies? If Chrysler, I'd be more suspicious
of the thinking that it is trying to do.

Good luck,
Papa Don


"James Morrow" <[email protected]> wrote in message
news:[email protected]...
> Hey everyone! I need some help. Ok, the long and short of it is that
> my 88 Jeep Cherokee Pioneer won't go over 20mph. It has the 4.0 L6 and
> it's an automatic.
>
> Now, 3 days ago it was fine. Everything ran great. Then, I decided
> that I wanted a better air intake system, so I disconnected the filter
> housing from the intake arm and stuck a cone filter on the end of the
> arm. I relocated the CCV hoses to the intake arm, but nothing else. At
> first it seemed to give a noticable power gain and much more
> aggressive tone. Then, over the next three days, it has been gradually
> slowing down. The engine will still rev just as hard as ever, but I
> can be in 4th gear on a straightaway at 5k/rpm and I'll only be going
> 25 or 30mph. Now, I thought that I might have messed somehthing up
> when I modified the intake system, so, I took off the cone filter and
> put the stock housing back in. No such luck! However, during the
> intake modification I lost the caps off of a couple of the vaccum
> hoses (2 that run to the back of the air cleaner housing & other misc)
> so they are not currently hooked up. Everyone I know says that they're
> not sure what the problem is but that disconnected vaccum hoses would
> not cause any problems of the sort. Several also say that the timing
> is just a coincidence and that the air intake system would have
> nothing to do with my problem. They say it sounds like a tranny issue.
> Do you think maybe I messed up a sensor and the computer's ratios are
> messed up? Has anyone ever heard of a problem like this happening
> before? I tried searching the internet but I couldn't find anything
> related to my problem mainly because I have no clue what is causing
> it. If anyone has any insight as to what is wrong with my Jeep I would
> really appreciate the help. It's my baby and I just wanna get it
> runnnin right again asap. Thanks!
>
> James Morrow

Maybe a shift solenoid is bad or not getting voltage, when my compushift is
on, it revs without moving much.
This was alink Bill posted a while back.

http://www.transonline.com/transdigest/magazines/1997-10/Shift Pointers/index.html


KH


"Don" <[email protected]> wrote in message
news:VXQ7b.24730$n94.5720@fed1read04...
> Jim - Sounds like your tranny - are you sure you didn't accidentally
> disconnect some vacuum hose leading to the tranny during your work? You
may
> want to put everything back to stock and see if the problem goes away.
(If
> you covered this, I apologize - at my age, don't have the time to read the
> whole story). Maybe, your new cone filter drops the vacuum so much (much
> more free flow) that it confuses the tranny or the electronicals (heh,
that
> is what us old timers call them) that it does not know what gear to put
the
> tranny in. Can't remember - yeah I know it's old age so don't tell me -
> when did Chrysler buy Jeep? - is it an electronically controlled Chrysler
> tranny or one of the old Jeep trannies? If Chrysler, I'd be more
suspicious
> of the thinking that it is trying to do.
>
> Good luck,
> Papa Don
>
>
> "James Morrow" <[email protected]> wrote in message
> news:[email protected]...
> > Hey everyone! I need some help. Ok, the long and short of it is that
> > my 88 Jeep Cherokee Pioneer won't go over 20mph. It has the 4.0 L6 and
> > it's an automatic.
> >
> > Now, 3 days ago it was fine. Everything ran great. Then, I decided
> > that I wanted a better air intake system, so I disconnected the filter
> > housing from the intake arm and stuck a cone filter on the end of the
> > arm. I relocated the CCV hoses to the intake arm, but nothing else. At
> > first it seemed to give a noticable power gain and much more
> > aggressive tone. Then, over the next three days, it has been gradually
> > slowing down. The engine will still rev just as hard as ever, but I
> > can be in 4th gear on a straightaway at 5k/rpm and I'll only be going
> > 25 or 30mph. Now, I thought that I might have messed somehthing up
> > when I modified the intake system, so, I took off the cone filter and
> > put the stock housing back in. No such luck! However, during the
> > intake modification I lost the caps off of a couple of the vaccum
> > hoses (2 that run to the back of the air cleaner housing & other misc)
> > so they are not currently hooked up. Everyone I know says that they're
> > not sure what the problem is but that disconnected vaccum hoses would
> > not cause any problems of the sort. Several also say that the timing
> > is just a coincidence and that the air intake system would have
> > nothing to do with my problem. They say it sounds like a tranny issue.
> > Do you think maybe I messed up a sensor and the computer's ratios are
> > messed up? Has anyone ever heard of a problem like this happening
> > before? I tried searching the internet but I couldn't find anything
> > related to my problem mainly because I have no clue what is causing
> > it. If anyone has any insight as to what is wrong with my Jeep I would
> > really appreciate the help. It's my baby and I just wanna get it
> > runnnin right again asap. Thanks!
> >
> > James Morrow
>
>

i can help u by telling u some information about ur car,, because
acttuly i have a wrangler,, it's same engin and same gear box but ur
problem is that u car dosn't go over 20mph,, so u have a problem with
the computer system u have to chaeck it,, or u can buy a cheap for ur
car and that cheap can allowd u to go over 240k/m

Huh?

--
Jim
98 TJ SE
90 SJ GW
http://www.delawareja.com/gallery/JDJeep98


"ali bin ali" <[email protected]> wrote in message
news:[email protected]...
> i can help u by telling u some information about ur car,, because
> acttuly i have a wrangler,, it's same engin and same gear box but ur
> problem is that u car dosn't go over 20mph,, so u have a problem with
> the computer system u have to chaeck it,, or u can buy a cheap for ur
> car and that cheap can allowd u to go over 240k/m

He says the computer is knackered, and if you should either check it,
or leave it knackered and chip it, which will give you a top speed of over
150 mph.

I now understand why Americans can pronounce sh*t with 4 syllables.

Dave Milne, Scotland
'99 TJ 4.0 Sahara

"TJim" <[email protected]> wrote in message
news:[email protected]...
: Huh?
:
: --
: Jim
: 98 TJ SE
: 90 SJ GW
: http://www.delawareja.com/gallery/JDJeep98
:
:
: "ali bin ali" <[email protected]> wrote in message
: news:[email protected]...
: > i can help u by telling u some information about ur car,, because
: > acttuly i have a wrangler,, it's same engin and same gear box but ur
: > problem is that u car dosn't go over 20mph,, so u have a problem with
: > the computer system u have to chaeck it,, or u can buy a cheap for ur
: > car and that cheap can allowd u to go over 240k/m
:
: