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Post by bsims66173 on May 18, 2016 10:19:44 GMT -5
I have a 2001 Montero Sport limited 4wd A/T, 3.5 engine. Actually is my grandsons vehicle. It has approx. 250,000 miles on it and has been a great vehicle. He called me yesterday and said it will only shift into reverse. I thought maybe the cable was broke. Went and checked this morning and cable seems to be fine. Selector seems to work fine and shifts through the different gears and the dash indicator matches with the console. Vehicle will not start in any position except P and N as it should. After starting vehicle and shifting to reverse the trans will go to reverse and the vehicle will back up as it should. When shifted from R to N the vehicle still appears to be partially in reverse as it will still try to back up but it appears to slip and you have to give it considerably more gas to make it move. If you shift from N to D you have nothing as if the trans is in neutral and it is the same shifting to through the other gears. Shift to reverse and the vehicle will back up again. Shift to park and it appears to go into park. Going to try to pull codes from the ODBII to see what it tells me. Any help is deeply appreciated. Will update when I get the codes pulled. Thank you in advance for any answers.
Barry Sims
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Post by dclambertt on May 18, 2016 14:53:47 GMT -5
This sounds like an issue with your Park/Neutral switch, which can be re-calibrated, or cleaned if necessary.
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Post by bsims66173 on May 18, 2016 17:31:24 GMT -5
I think this switch is located on the gear selector on the side of the transmission? is there a test that can be performed before replacing? Thank you for your input.
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Post by jkdv8 on May 18, 2016 19:57:03 GMT -5
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Post by bsims66173 on May 19, 2016 10:30:13 GMT -5
I do have an OBDII code reader. I pulled the codes yesterday and a P0403, P0421 and P0431 were the only codes I had. Check engine light has been on for years with these codes. I think they are from the oxy sensors. The d light on the dash has been out for years also but has run fine up till now. I think it is the bulb blown. No other lights flashing and all seem to work as they have in the past with no problems. Checked again this morning and it appears that when shifting from P to R, the trans goes into reverse and will back up. Shifting from R to N appears there is no change and the car will still reverse like the trans is in R. Letting the car roll backwards slowly in reverse and shifting the trans to from R to D quickly it appears the trans locks as if in park and the car will not move. I am starting to have a sick feeling that the trans is shot. Thanks again to all who are trying to help.
Barry Sims
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Post by dclambertt on May 19, 2016 14:21:17 GMT -5
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Post by jkdv8 on May 19, 2016 19:26:12 GMT -5
The d light on the dash has been out for years also but has run fine up till now. I think it is the bulb blown. No other lights flashing and all seem to work as they have in the past with no problems. Barry Sims The N light is the one that will flash the codes when you jump the pins. Long flashes for the first digit and short flashes for the second to make up the two digit code. Also, not all OBD scanners will pull trans codes if they are present even if they are P0*** and especially the P1*** codes. Might be worth trying even if the N isn't flashing.
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Post by bsims66173 on May 21, 2016 10:26:37 GMT -5
What pins do you short out to get the trans codes? I have seen something that said short pins 1 and 4. Is this the correct pins? Thanks again.
Barry
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jocks
Junior Member
Posts: 28
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Post by jocks on May 23, 2016 15:22:20 GMT -5
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Post by jkdv8 on May 23, 2016 19:33:23 GMT -5
Hmm. Well, I searched high and low for this procedure. Guess it was from searching using Montero sport keywords. The 3.0 and 3.5 bit is interesting as I didn't mess with the connector behind the obd2 connector. Kinda odd though two separate procedures. Wonder if it's the same with these. I had my doubts with engine light flash deal because there are so many codes. I still don't see how doing it through a multimeter or test light would change anything so I just recommended getting an obd scanner for those. The main thing was being able to pull codes for the other systems that required a MUT or another expensive code reader.
But yea, grounding pin 1 to 4 (or running a wire from ground to pin 1) will give you the trans codes if there are any.
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Post by bsims66173 on Jun 2, 2016 13:31:17 GMT -5
Just an update on this problem. Talked with someone who works a lot on transmissions of all kinds and he said this trans was gone. He said it sounds like the clutches are welded together and could not be repaired. I have started looking for a good used trans. all the searches ask if the trans is: AT, 3.5L (6 cyl), 4x4, from 9/3/00 or :AT, 3.5L (6 cyl), 4x4, thru 9/2/00. what does the date refer to and how do I find this information. Does anyone know what the difference is between the two transmissions. Thanks in advance for your knowledge and wisdom.
Barry Sims
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Post by dclambertt on Jun 2, 2016 15:06:38 GMT -5
Sounds like you would be looking for the first tranny at 2001.
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Post by ES_97Sport on Jun 2, 2016 18:05:07 GMT -5
... all the searches ask if the trans is: AT, 3.5L (6 cyl), 4x4, from 9/3/00 or :AT, 3.5L (6 cyl), 4x4, thru 9/2/00. what does the date refer to and how do I find this information. Does anyone know what the difference is between the two transmissions. Thanks in advance for your knowledge and wisdom. Barry Sims The transmission model for the Gen 2 Sport is V4A51. It was also used on the '99 Gen 1 Limited 3.5L. Prior to that Mitsu was using a just slightly modified version (V4AW3) of the Jeep Cherokee AW4. The '03 and '04 Limited AWD 3.5L - and only that vehicle - used the early Montero 5-speed. This absolutely will not work on anything else except another '03/'04 Limited AWD 3.5L. I don't know what changed on the V4A51 over the five years it was used in the US Sports. I - THINK - and I am in now way sure of this - that its '99-'01 and '02-'04 but I may bi, and probably am, incorrect. There are no differences in the A/T between the 3.0L and 3.5L that I am aware of. Mechanically, any Gen 1 V6 transmission will bolt up to any Gen 2 V6 engine and the other way around. Its the electronics and interfacing with the PCM that is the issue. The dates format is month/day/year in two digit notation with no leading zero. Hence '00' is 2000. '9' is September and '3' is the third of the month. As for what it refers to ... Model years don't mean a lot with Mitsubishi. Stuff changed on an ongoing basis throughout production. For instance, my '97 is an October '96 production vehicle. The clips that attach the driver and passenger kick panels to the floor are TOTALLY different than the post-April '97 vehicles - even though they are BOTH '97 Sports. SO, if it says "through 5/6/00" and "5/7/00 through 12/31/00" something changed regarding that part in mid-year. It could be that the previous part was superseded as happened with the early production ECMs in the '97s and the parts are actually interchangeable, OR ... ... it could be like the '99 where one transmission was used until the beginning of May and a completely different transmission took its place and was used through the model year end, and NOTHING is interchangeable. In fact, wiring, the ECM/PCM, etc. and who knows what else all changed as well. The FED '99 Limited 3.5L shows two different exhausts - one with one CAT and two O2 sensors, and a later version (which was basically the Gen 2 version) with multiple CATs and four O2 sensors. So, when you look at the PNs, it'll give one PN 'through 5/something/99' and another PN '5/something/99 through 12/something/99'. They are completely different and not interchangeable. You have to be very careful crossing these inter-year boundaries. Some of them are cosmetic and some are major re-dos. Edward
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