From owner-xj-digest-at-digest.net Tue Mar 31 12:03:57 2009 From: xj-digest xj-digest Tuesday, March 31 2009 Volume 01 : Number 2978 Forum for Discussion of XJ cherokees and wagoneers Brian Colucci Digest Coordinator Contents: Re: xj: Re: 1989 Jeep Cherokee Vaccum Diagram 4.0 Litre Automatic Tranny Re: xj: Re: 1989 Jeep Cherokee Vaccum Diagram 4.0 Litre Automatic Tranny Re: xj: 1991 Jeep Cherokee power steering problem xj: trans question XJ Digest Home Page: http://www.digest.net/jeep/xj/ Send submissions to xj-digest-at-digest.net Send administrative requests to xj-digest-request-at-digest.net To unsubscribe, include the word unsubscribe by itself in the body of the message, unless you are sending the request from a different address than the one that appears on the list. Include the word help in a message to xj-digest-request to get a list of other majordomo commands. ---------------------------------------------------------------------- Date: Thu, 26 Mar 2009 23:10:38 -0700 From: ernest breakfield Subject: Re: xj: Re: 1989 Jeep Cherokee Vaccum Diagram 4.0 Litre Automatic Tranny simplest thing would be to start by making sure the transmission throttle cable is adjusted properly. (they do sometimes need to be readjusted.) also, at least in some years, the AW4 also takes input from the vehicle speed sensor to control shift point/kickdown. (guess how i found out!) cheers! e Kevin wrote: > I thought kickdown happened as a result of linkage from the throttle body on > an AW4, sort of like on a torqueflight. If not, adjusting that rod would have > no affect, and it seems to... > > So I grabbed the service manual for my 89 (which is a clutch). If it's not > kicking down at all, it suggests this is either a faulty solenoid, valve body, > or an electric control problem. If the kickdown is delayed, it adds that > the throttle cable could be the problem. > > I'm assuming by solenoid it means one of the two solenoids it uses for > selectig gears inside the transmission. That being the case, I'd expect it > to be inconsistent across all gears if you're having a problem. > > On Wed, Mar 25, 2009 at 06:22:19PM -0700, john wrote: > >> fuel pump and fuel filter are at the other end of the Jeep, not likely >> they caused the problem... >> >> if it's not kicking down it could be a number of issues, start with >> the simplest first... check fuses for the transmission... then >> have the Throttle Position Sensor checked. Check linkages under >> the hood... >> >> check to make sure the transmission is able to enter all gears manually... >> >> suspect it's just a conicidence and nothing serious. ------------------------------ Date: Thu, 26 Mar 2009 23:13:10 -0700 From: ernest breakfield Subject: Re: xj: Re: 1989 Jeep Cherokee Vaccum Diagram 4.0 Litre Automatic Tranny in some cases, those switches also just slip a little bit in the bracket, and need nothing more than to be pressed back into place. at least in mine, they aren't held in place by anything other than friction. cheers! e Ed Kummel wrote: > Here's something you may want to look at. > Are you sure that it's a "kick down" that you are looking for? > My Jeep had a problem in that it was not able to get out of torque converter > lockup. Once it hit 3rd gear, it went into torque converter lockup and stayed > there no matter what, it wouldn't down-shift properly and when it did, it was > very clunky...almost like a manual. It would shift into the lower gear but the > engine would rev and slow the vehicle down, just like it would in a manual. > I found the problem to be the brake pedal. > Yup, the actual pedal inside the vehicle. > > Turns out that there's a switch there (two actually, the other one is for the > brake lights). > This switch is depressed when the brake pedal is not pushed. The switch is > released when you push on the brake. This tells the torque converter to get > out of lock. You can try an experiment on your own by driving down the road > and when you hit a slight incline, while still giving the Jeep gas, tap the > brake pedal. You will see the engine rev higher as the torque converter is > released and as an added benefit you will get more power to scale that incline > (all my 4.0L Jeeps suck at climbing hills at highway speeds...this gives the > jeep a little extra boost) > In my case, the metal bracket that the switch was mounted on was slightly > bent. I straightened this and adjusted the switch and now the Jeep shifts > properly in normal and performance mode once again! > Ed > web/gadget guru > > ------------------------------------------------------------------------ > By Richard Feynman, Physicist, Nobel winner (1918-1988) > > "There are 10^11 stars in the galaxy. That used to be a huge number. But it's > only a hundred billion. It's less than the national deficit! We used to call > them astronomical numbers. Now we should call them economical numbers." > > --- On Thu, 3/26/09, Kevin wrote: > > > From: Kevin > Subject: Re: xj: Re: 1989 Jeep Cherokee Vaccum Diagram 4.0 Litre Automatic > Tranny > To: xj-at-digest.net > Cc: "Tom Collins" , "RS" , > "Jim Blair" > Date: Thursday, March 26, 2009, 4:40 PM > > > I thought kickdown happened as a result of linkage from the throttle body on > an AW4, sort of like on a torqueflight. If not, adjusting that rod would have > no affect, and it seems to... > > So I grabbed the service manual for my 89 (which is a clutch). If it's not > kicking down at all, it suggests this is either a faulty solenoid, valve > body, > or an electric control problem. If the kickdown is delayed, it adds that > the throttle cable could be the problem. > > I'm assuming by solenoid it means one of the two solenoids it uses for > selectig gears inside the transmission. That being the case, I'd expect it > to be inconsistent across all gears if you're having a problem. > > On Wed, Mar 25, 2009 at 06:22:19PM -0700, john wrote: > >> fuel pump and fuel filter are at the other end of the Jeep, not likely >> they caused the problem... >> >> if it's not kicking down it could be a number of issues, start with >> the simplest first... check fuses for the transmission... then >> have the Throttle Position Sensor checked. Check linkages under >> the hood... >> >> check to make sure the transmission is able to enter all gears manually... >> >> suspect it's just a conicidence and nothing serious. ------------------------------ Date: Fri, 27 Mar 2009 10:31:17 EDT From: Moontanman-at-aol.com Subject: Re: xj: 1991 Jeep Cherokee power steering problem In a message dated 3/27/2009 1:44:15 A.M. Eastern Daylight Time, ernestb-at-BackYardEngineering.ORG writes: sorry if i missed it, but i haven't seen anyone mention checking the belt tension yet,... are you certain the pump is adjusted far enough out that the belt is tight enough it's not slipping? that should be first,... the belt should be tight enough that you can't twist it around by hand more than about 1/4 turn on its longest run between pulleys. i wouldn't bother trying to adjust the steering box unless you're trying to eliminate slack freeplay in the middle; that's not related to the symptoms you describe, and can cause damage if over tightened. Thanks for the tips, I think the belt is about right, at least as close as I can get it. I'm not sure how to deal with the steering box anyway so it will probably be my last bet. Michael Hissom aurea mediocritas **************Feeling the pinch at the grocery store? Make dinner for $10 or less. (http://food.aol.com/frugal-feasts?ncid=emlcntusfood00000001) ------------------------------ Date: Tue, 31 Mar 2009 12:03:19 -0700 (PDT) From: diesel john Subject: xj: trans question what Diesels would bolt up to a Ford C6 mated to an NP205? I have one from an '89 Bronco that isn't selling... driver's side drop so it would work in my '83 J10... or my '86 cj-10a... do ford Diesel pickups with IH engines ever use the C6? john ----- - ------------------------------------------------------------------------ Snohomish, Washington -o|||||o- where Jeeps don't rust, they mold http://AMSOIL.com/redirect.cgi?zo=283461 http://creationwiki.org http://johnmeister.com http://wagoneers.com http://fotomeister.us - ------------------------------------------------------------------------ ------------------------------ End of xj-digest V1 #2978 *************************