JeepcoMJ Posted February 18, 2007 Share Posted February 18, 2007 Hi, this is actually a cherokee question. my buddy has a 1995 jeep cherokee 2 dr with a 4.0 HO engine. his tranny blew the other day, and now he's done with the jeep scene...needs some money for a new car that gets gas mileage, and wants 1000 for his cherokee. My question is, does anyone know if the 1995 and 1996 auto trans. with overdrive for the 4.0 are the same? I would assume so, but sometimes things change. the reason i ask that is that I want to buy it and I can get a 1996 auto trans. for 100 bucks with 98,000 miles on it and all the 4wd parts needed. so would that work as a swap? any help would be hot. thanks Link to comment Share on other sites More sharing options...
comancheman Posted February 18, 2007 Share Posted February 18, 2007 I'm pretty sure that both would have the chrysler auto tranny. it should bolt up w/o a problem Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 18, 2007 Author Share Posted February 18, 2007 I'm honestly not worried about the bolt-up. heck, i know i could put an ax-15 in it easily if i wanted. what i'm worried about is the electronic aspect of it, since they're computer controlled. any insight on that? Link to comment Share on other sites More sharing options...
Eagle Posted February 18, 2007 Share Posted February 18, 2007 I'm pretty sure that both would have the chrysler auto tranny. it should bolt up w/o a problem Actually, neither is a Chrysler tranny. They are both the Aisin-Warner AW4 and they will interchange. Get the tranny computer with the replacement. Shouldn't make a difference, but there may be minor firmware differences. Link to comment Share on other sites More sharing options...
comancheman Posted February 18, 2007 Share Posted February 18, 2007 what year did they go to chrysler tranny's Link to comment Share on other sites More sharing options...
feerocknok Posted February 18, 2007 Share Posted February 18, 2007 In 2000 the NV3550 came into use in Wranglers and Cherokees, but that transmission is made by New Venture. Link to comment Share on other sites More sharing options...
Twisty Posted February 18, 2007 Share Posted February 18, 2007 In 2000 the NV3550 came into use in Wranglers and Cherokees, but that transmission is made by New Venture. thats a manual tranny. AW4 stayed through 01. Link to comment Share on other sites More sharing options...
feerocknok Posted February 18, 2007 Share Posted February 18, 2007 In 2000 the NV3550 came into use in Wranglers and Cherokees, but that transmission is made by New Venture. thats a manual tranny. AW4 stayed through 01. Just was trying to say that they never switched to a Chryco tranny, that I know of. Link to comment Share on other sites More sharing options...
Eagle Posted February 19, 2007 Share Posted February 19, 2007 what year did they go to chrysler tranny's They didn't. The XJ used the AW4 right up to the bitter end. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 19, 2007 Author Share Posted February 19, 2007 Thanks for the help, i got the tranny payed for i just have to go get it, gettin the computer for free. i'll just swap it and then be done. oh, i'm selling the thing when i've finished replacing that. we don't need it here, it gets worse gas mileage than my MJ 3.8 so i don't really want it all that much i just figure i can make a few bucks :D Link to comment Share on other sites More sharing options...
87manche Posted February 19, 2007 Share Posted February 19, 2007 the only auto chryco trans was behind the 2.5 ALL 4.0 autos use the AW4. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 20, 2007 Author Share Posted February 20, 2007 OK, so does anyone know about diagnosing AW-4 symptoms? here's what happened. he was driving it, then it went into 1st then just nothing. no sound. just stopped working. now it just sits and seems like it's in neutral, you can rev it but it isn't doing anything. so does it sound like a torque converter, the t.c. solenoid, or what? the tranny PCM? it doesn't seem like this is a symptom of a bad tranny so much as a bad torque converter or something along those lines. Link to comment Share on other sites More sharing options...
carnuck Posted February 23, 2007 Share Posted February 23, 2007 I would check the shift linkage first (does it actually go into park?) Then check the torque converter bolts (see if they fell out) Maybe the tcase was bumped into neutral? (I bought one like that) Link to comment Share on other sites More sharing options...
Eagle Posted February 23, 2007 Share Posted February 23, 2007 As a diagnostic, you should be able to remove the fuse on an AW4 and run it by shifting manually. You should have first, third and fourth gears that way, and I believe you lose the torque converter lockup but it should run and shift. That takes the tranny computer (TCU) out of the equation. If it won't run and shift manually with the fuse pulled, the problem is elsewhere than the TCU. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 24, 2007 Author Share Posted February 24, 2007 As a diagnostic, you should be able to remove the fuse on an AW4 and run it by shifting manually. You should have first, third and fourth gears that way, and I believe you lose the torque converter lockup but it should run and shift. That takes the tranny computer (TCU) out of the equation. If it won't run and shift manually with the fuse pulled, the problem is elsewhere than the TCU. what do you mean shift manually? like, just step on the brake, pull the shifter back into gear, and step on the gas? can you explain that process to me better? thanks! THAT NEUTRAL IDEA JUST MIGHT BE IT!!!!!!!! haha, it revs nicely in gear but doesn't go anywhere. Link to comment Share on other sites More sharing options...
Eagle Posted February 24, 2007 Share Posted February 24, 2007 From the AW-4 FSM: NOTE: This test determines if a problem is related to a mechanical or electical component. Stop the engine and disconnect the TCU or the TCU fuse. Road test the vehicle. Shift the transmission manually into each gear range. The transmission should operate as follows: * lock in Park * back up in Reverse * not move in neutral * provide first gear only with shift lever in 1-2 position * operate in third gear only with shift lever in 3 position * operate in overdrive fourth gear only with shift lever in D position If the transmission operates as described, proceed to the next test. However, if the forward gear ranges were difficult to distinguish (all feel the same), or the vehicle would not back up, refer to the diagnosis charts. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 25, 2007 Author Share Posted February 25, 2007 From the AW-4 FSM: NOTE: This test determines if a problem is related to a mechanical or electical component. Stop the engine and disconnect the TCU or the TCU fuse. Road test the vehicle. Shift the transmission manually into each gear range. The transmission should operate as follows: * lock in Park * back up in Reverse * not move in neutral * provide first gear only with shift lever in 1-2 position * operate in third gear only with shift lever in 3 position * operate in overdrive fourth gear only with shift lever in D position If the transmission operates as described, proceed to the next test. However, if the forward gear ranges were difficult to distinguish (all feel the same), or the vehicle would not back up, refer to the diagnosis charts. well Eagle, bad news for me. the tranny is TRASH. i tried that, it didn't work. took the bottom of the tranny off to check the current running through the solenoids, and found that the bottom of the pan is FULL of metal shavings. no clue what the heck happened. but at least I have another tranny with 100k miles on it! Link to comment Share on other sites More sharing options...
Eagle Posted February 26, 2007 Share Posted February 26, 2007 well Eagle, bad news for me. the tranny is TRASH. i tried that, it didn't work. took the bottom of the tranny off to check the current running through the solenoids, and found that the bottom of the pan is FULL of metal shavings. no clue what the heck happened. but at least I have another tranny with 100k miles on it! Oops. Yeah, the pan full of metal chips would definitely be "a clue." Bummer. Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 26, 2007 Author Share Posted February 26, 2007 well Eagle, bad news for me. the tranny is TRASH. i tried that, it didn't work. took the bottom of the tranny off to check the current running through the solenoids, and found that the bottom of the pan is FULL of metal shavings. no clue what the heck happened. but at least I have another tranny with 100k miles on it! Oops. Yeah, the pan full of metal chips would definitely be "a clue." Bummer. at least i was gonna yank it anyways to put in a new torque converter that i got for free. i just payed $100 for the tranny WITH transfer case out of a 1996. I'm paying another 200 for the whole truck that the new tranny came out of...i want the air bag system for my 86 comanche, as well as the new 4wd selector handle. it has a 8.25 rear end as well. I'm putting the cruise out of the 3.8 camaro i got my engine from in it...so that should be some interesting cross-wiring to figure it all out! woohoo! Link to comment Share on other sites More sharing options...
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