Jim Warman Posted August 27, 2007 Share Posted August 27, 2007 Well... another company campout come and gone.... Used to be they'd have me cook a big pot of chili but they found out about my ribs.... Anyway... tomorrow, back to the more mundane things in life.... And this includes an AX4N... diagnosed by my "superstar" as having no line pressure. (oddly, the second transmission in a row he has diagnosed as having absolutely no line pressure...). Even after I told them we needed to do more in car testing before we started dismantling things (especially in the abscence of any tattletales in the pan), I was informed last week that the trans was in the fixture on the tranny bench. OK... now we are officially looking for a needle in a hay stack. Pump looks good, convertor and pump driveshaft are like new, main regulator is free in the valve body... forward and reverse clutches air test good... Codes?.... Whaddaya mean codes.... I doan need to check for no steenking codes.... Go figure... Victim is an 03 Windstar - customer concern was no engagement forward or reverse.... When asked if there was any motion in any of the manual gear positions, superstar kind of blanched and stammered "No"... Any displaced trans gurus out there? When you're up to your ass in alligators, it's hard to remember all you wanted to do was drain the swamp... Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted August 27, 2007 Share Posted August 27, 2007 A broken sun-gear is the first thing that comes to mind... but I think it would still have reverse and line pressure in that case... hmmm... I guess I'm not a displaced transmission tech... Quote Link to comment Share on other sites More sharing options...
JAKE_MORSE Posted August 27, 2007 Share Posted August 27, 2007 I would have said the same about the sun gear. but line press. would still be there and maybe some noise. Too bad Jim that you didn't catch the tech before removal so you could check for other manual gear applications, and DTC's. could there be a blockage in cooler or lines? Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted August 28, 2007 Share Posted August 28, 2007 I would have said the same about the sun gear. but line press. Yeah... but I'm putting my chips on a possible misdiagnosis on the line pressure thing... Quote Link to comment Share on other sites More sharing options...
Jim Warman Posted August 28, 2007 Author Share Posted August 28, 2007 Survey says.... *brain fart*!!!! When I checked the pump shaft/ torque converter splines... the converter laying on the studs.... the pump shaft (which looks pristine) dropped into the converter splines and held really good.... But, in real life, the shaft doesn't bottom in the converter splines.... lift the shaft ever so slightly and "BINGO" - we have the source... This one could well have been the misdiagnosis from hell.... And it came at a very good time... It shows that when we start feeling that something is becoming too complex, we might back up a step and revisit our basics... As for my superstar?.... I still think he lucked out... and he will be someone elses problem next week... Quote Link to comment Share on other sites More sharing options...
JAKE_MORSE Posted August 28, 2007 Share Posted August 28, 2007 I thought something had to be over looked. I have seen about 3 or 4 of those units where the convertor is stripped and I found the first one cause I rememberd my trans teacher talking about this possibility. Dose this mean the "superstar" will be kicking stones Jim? Quote Link to comment Share on other sites More sharing options...
LARRY BRUDZYNSKI Posted August 28, 2007 Share Posted August 28, 2007 I'm thinking your "superstar" will be doing warranty squeaks and rattles for a while. Quote Link to comment Share on other sites More sharing options...
Jim Warman Posted August 28, 2007 Author Share Posted August 28, 2007 He turned in his notice about 2 weeks ago.... I did find out that his attitude got him fired from his last job... and I wish his next employer well... This kid has had some shining moments - but his attitude keeps getting in his way... He wont ever admit that he's in over his head and needs some help... But, we can only ever show them the direction and leave the rest up to them... Quote Link to comment Share on other sites More sharing options...
eastendpowerstroke Posted August 30, 2007 Share Posted August 30, 2007 Sorry Jim I didn't see this post sooner I might have saved you a few minutes /forums/images/%%GRAEMLIN_URL%%/frown.gif as I started to read it I immediately thought of the pump shaft/striped out converter that ALMOST ate my lunch once....... pretty much the same diag you had "won't move I unplugged it but it still won't move" got plunked on my bench I took it apart and found nuttin!! I don't know what made me stick the shaft into the converter but I did and it was striped but the shaft looked perfect. Quote Link to comment Share on other sites More sharing options...
Jim Warman Posted August 30, 2007 Author Share Posted August 30, 2007 You got it... this shaft looks as good as the new one... What screws a guy up is "bottoming" the shaft in the convertor and hitting the few good splines that are down there.... Proof positive that the simplest of things are overlooked and discounted.... when they shouldn't be.... With the way I preach, I truly have egg on my face.... Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted August 31, 2007 Share Posted August 31, 2007 Of course, knowing to check for that in the first place helps! Quote Link to comment Share on other sites More sharing options...
eastendpowerstroke Posted September 1, 2007 Share Posted September 1, 2007 In case you don't know, if you have any pressure or the converter isn't striped if you unplug the bulkhead connector at the top of the trans it will usually be able to drive into the bay under it's own power.. and save your backs from pushing. /forums/images/%%GRAEMLIN_URL%%/readthis.gif CHECK AND RECORD CODES FIRST!!!!!!!! /forums/images/%%GRAEMLIN_URL%%/readthis.gif unplugging it will set many codes. Quote Link to comment Share on other sites More sharing options...
Ray_Clark Posted September 15, 2008 Share Posted September 15, 2008 Another tip I try to pull valve body in veh before removal and check shaft and splines while conv. still bolted in. had some with broken shaft from worn bushing and failed support bearing Quote Link to comment Share on other sites More sharing options...
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