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4276 messages,  Last post on Oct 23, 2006 at 1:11 AM

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#3011 of 4276 1992 Dodge Grand Caravan High Idle Problems by jdybber Jul 12, 2005 (5:40 pm)
I have a 3.3L Grand Caravan with a high idle at startup and throughout the driving range.This is what I have checked and replaced so far: Installed brand new AIS Motor: the connections are good to the AIS harness: there are no shorts shown with ohmeter at the harness: throttle body has been cleaned and throttle body gasket replaced: I have checked for vacuum leaks and can't find any: Vacuum is at a steady 15, but when I open and close throttle the reading drops below 5 (which is OK), but only goes back to 18 before settling at 15. Is the 18 normal or not? I suspect I should see 22 or so, but I am guessing here. The car will start at 1250 rpms and quickly rise to between 1750 and 2000. I disconnected battery to erase trouble codes, and after replacing AIS motor and driving 5 minutes to go at least 40-45 mph the Code 25 (AIS motor issues) pops up. What steps do you recommend from here? I realize the ECM(Computer) is still a potential issue, but want to eliminate all before that step. I know enough to be dangerous, but I welcome your expertise so I can diagnose more effectively in the future. Thanks. Replies to this message: dustyk (Jul 12, 2005 5:46 pm) jdybber (Jul 12, 2005 6:07 pm)
#3012 of 4276 Re: 1992 Dodge Grand Caravan High Idle Problems [jdybber] by dustyk Jul 12, 2005 (5:46 pm)
Replying to: jdybber (Jul 12, 2005 5:40 pm) Fifteen is low for an idle vacuum, in my opinion. I'd continue to check for a vacuum leak. A bad PCV valve can cause this. If not vacuum related, this could also be caused by a defective Throttle Position Sensor.   Regards, Dusty Replies to this message: jdybber (Jul 12, 2005 6:07 pm)
#3013 of 4276 Re: 1992 Dodge Grand Caravan High Idle Problems [dustyk] by jdybber Jul 12, 2005 (6:07 pm)
Replying to: dustyk (Jul 12, 2005 5:46 pm) Dusty, The TPS reads within specs on Voltage checks ect. I did have another known good PCV and reading is the same.
#3014 of 4276 01+ Service Manual by jjtj Jul 13, 2005 (8:35 am)
Has anyone had any luck finding a good service manual for the latest generation of vans (01 and up)? The newest I've seen is a Haynes manual, which is for 96-2002, which I don't fully understand as the last gen. ended in 2000. There are some Chrysler factory manuals on ebay, but I'm not sure how friendly these would be to a driveway mechanic.   Jason Replies to this message: lastwraith (Jul 13, 2005 8:19 pm) dustyk (Jul 16, 2005 2:20 pm) slowhand (Jul 11, 2005 2:58 pm) kmcoleman (Aug 08, 2005 10:56 am) seanwood (Aug 11, 2005 1:53 pm) and 1 more...
#3015 of 4276 Re: 96 Grand Voy death...... [gvdead] by bob80 Jul 13, 2005 (11:26 am)
Replying to: gvdead (Jun 21, 2005 8:39 pm) My 96 caravan (134,000 miles) does the same thing. Goes about 40 miles and will stumble, buck and die. After setting for about 30 min. will start and run. Engine light on. Dealer could not get van to repeat but code was for timing. He thought it could be fuel pump. Did not replace and van is running ok around town but afraid to take back on highway. Already had towed home twice. Any suggestions from those who have had same problem?   Thanks
#3016 of 4276 Where can I find TSB's and other like info? by bryaninoregon Jul 13, 2005 (6:10 pm)
I am still looking for more info on the A/C compressor problems on '02 GC. I would like to know how to find tsb's and other info like that. thanx Replies to this message: claires (Jul 13, 2005 9:29 pm) bryaninoregon (Jul 14, 2005 6:27 pm)
#3017 of 4276 Re: 01+ Service Manual [jjtj] by lastwraith Jul 13, 2005 (8:19 pm)
Replying to: jjtj (Jul 13, 2005 8:35 am) Factory service manuals and owners' books, through Dyment Distribution: fax 440 572 0815, phone (North America, possibly elsewhere) 800 890 4038.   here's the link page, though you may very well have run across it yourself: http://www.allpar.com/resources.html   Unfortunately, Helm Inc. does not seem to sell a service manual for Chrysler stuff. Just about everything I've ever needed to do on my Accord is in the Helm OEM Manual.   The service manuals are worth the search, I've had Haynes and Chilton and they don't begin to compare (though they aren't really aimed at the same audience). But just recently in fact with the Haynes manual.....it was just plain wrong about something I needed to do and even the picture was wrong for my year even though according to the book it should have worked.   Get the service manual and you will be able to figure it out.   good luck!
#3018 of 4276 Re: Where can I find TSB's and other like info? [bryaninoregon] by claires HOST Jul 13, 2005 (9:29 pm)
Replying to: bryaninoregon (Jul 13, 2005 6:10 pm) Bryaninoregon, click the "Maintenance Guide" link on Edmunds.com Tips Page to find Technical Service Bulletins for just about any vehicle. Replies to this message: bryaninoregon (Jul 14, 2005 6:27 pm)
#3019 of 4276 1998 Dodge Grand Caravan 3.0 Highway Speed Overheating by gabhanjacisa Jul 14, 2005 (5:59 am)
I live in SC, but my wife is taking care of her father's funeral in MI, so I am trying to diagnose this problem long distance. The radiator was recently replaced due to a crack in it, but some similar problems/symptoms are occuring. Sometimes (not all the time, but too many times to ignore), at highway speed (70+ MPH), with the a/c on, the temperature gauge slowly inches up past the normal range. It does not reach the point where the engine overheat dash signal comes on -- yet -- but it does go up too high and too freqently for my liking. The a/c will start blowing warmer air. (On the way up to MI, she was stuck on the highway for over 2 hours due to an accident, in hot weather, and at the beginning of this stand-still, w/the a/c on, the gauge started creeping up. She turned a/c off and gauge went back down to normal range for duration of stand-still.) My brother-in-law just yesterday replaced the upper radiator hose, saying there was a crack in it. My wife drove it immediately after that with no problems, however later when she drove it that day on the highway, the same problem occurred. Any help/suggestions would greatly be appreciated.   gabhanjacisapeoplepc.com Replies to this message: lastwraith (Jul 14, 2005 7:34 pm) gabhanjacisa (Jul 16, 2005 6:51 am) lastwraith (Jul 19, 2005 11:59 pm) and 2 more...
#3020 of 4276 Trans Blow Up by mhipchen Jul 14, 2005 (2:39 pm)
I have a 1999 Dodge Grand Caravan. While driving it one day not far from homeit jerked twice and the transmision blew up.Parts flew out of the bell housing on to the road. It did'nt have 40,000 miles yet.I know that the warranty ran out at 36,000 I contacted Chryslers help line. They wanted the original reciept, sounded fishy,I copied it at Kinkos and sent it off.Chrysler got back to me stating that there was nothing that they could do. I'd like to know if this happened to anyone else.What do I do now?

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