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Pontiac Montana Air Shock Problems

23 messages,  Last post on Apr 02, 2009 at 12:59 PM

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What is this discussion about? Pontiac Montana, Pontiac Montana SV6, Suspension, Van

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#20 of 23 montana troubles by kennie Mar 24, 2009 (9:22 am)
http://townhall-talk.edmunds.com/WebX/.f0fb401/50   You probably don't want to hear this but my van has been doing this for over a year now. I am NOT an expert but have done much research and this is what I know. It is likely, not garanteed, that the primary pressure selunoid in the transmission is worn out or it is dirty. It controls the presure on trany plates. The computer detects transmission slippage and after a certain amount of times it sends a signal to the selunoid to go FULL PRESSURE as a safty measure to save your clutch plates from slipping and burning up which can hatch your trany really fast. Either your plates are worn badly or your selunoid is worn/dirty causing an incorrect amount of fluid pressure which in turn creates slippage which in turn the computer sends a signal to go full pressure. Depending on how you drive, hard shifting can really strain your transmission. The dealership/trany shops will want to replace rather than fooling around with the amount of time it takes to take appart transmissions and "miss" something in the process... rebuilds are probably a good option when you really consider this. I am waiting for mine to physially fall off the van as i'm driving taking precasions to ensure if i'm on a family holiday that I know exactly where I can have the van towned (AMA coverage) in order to have it replaced and how much it will cost.... about $2500 in Alberta/BC. The effort to replace the selunoid is ~$200 parts and about $700 labour (estimate) - I am also considering this but to the transmission is hours of work taking things off and dropping from van. I know, probably not what you want to hear. Once it is opened up you never know what they are going to find and you'd actually have to trust them b/c you/I don't know crap about what really needs to be replaced. There are pics on the interest of the selunoids worn for the montanan but took awhile to find them.
#21 of 23 montana troubles by kennie Mar 24, 2009 (9:24 am)
I have also read some posts where montana owners change the selunoid and the problem continues.. but they never did find out why so it's a crap shoot but a good one.
#22 of 23 Re: Pontiac Montana Transmission slips & whines (Sometimes!!!) [chopperman1967] by steve_ HOST Apr 02, 2009 (12:06 pm)
Replying to: chopperman1967 (Mar 23, 2009 5:28 pm) feel free to E-Mail me   Let's keep the discussion here so everyone will benefit. Thanks!   Steve, visiting host
#23 of 23 Pontiac Montana Transmission slips & whines by kennie Apr 02, 2009 (12:59 pm)
Something I discovered over the past week... apparently there is something called a "shift kit" that you can install on some transmissions of which are for montana. The shift kit somehow bypasses the PCS and is signficantly less expestive/difficult to replace - simply dropping the trany pan you can install the $30 part which is available from zz??.com. Don't know much more than that... search automotive forums for more info... Cheers, Kennie

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