Thread: Throwing code P1811

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  1. #1 Throwing code P1811 
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    Hey guys, looking for some help. I have a 2002 Grand Prix GT. it's currently Throwing code P1811 and I'm just looking for a way to fix it. Is this something that is going to kill my transmission? Ive noticed it happens between 3rd and 4th gear. Car seems to hold around 3000 rpms a little to long and eventually you will feel it shift to correct gear. I've checked Fluid and I'm good there.

    I read on here someone sells a shift kit that fixes this issue. Just looking for someone to point me in the right direction.
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  2. #2 Re: Throwing code P1811 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    http://tripleedgeperformance.com/Harsh-Shift-P1811.html


    http://shop.tripleedgeperformance.co...it-K84908M.htm

    That is what you want, you can find it on ebay for cheaper sometimes. Note that it might not fix it 100%, but it can surely help.

    SMGPFC Member #1
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  3. #3 Re: Throwing code P1811 
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    http://tripleedgeperformance.com/Harsh-Shift-P1811.html


    http://shop.tripleedgeperformance.co...it-K84908M.htm

    That is what you want, you can find it on ebay for cheaper sometimes. Note that it might not fix it 100%, but it can surely help.
    Thanks, appreciate it.

    So let me ask, is this something that eventually causes transmission failure? or is it just a just a little something that I can deal with? cause I notice after I get that shift into the correct gear, the car seems to drive fine and shift properly until I turn it off.

    I drive mostly highway, 55 miles at a time.
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  4. #4 Re: Throwing code P1811 
    Turbo is the way to go. BillBoost37's Avatar
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    If you put in the shift kit.. it'll take care of the issue to the point that it won't cause further problems in the trans. Essentially..it's masking the problem by shifting a little faster/firmer than stock.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  5. #5 Re: Throwing code P1811 
    Donating Users Bronco Boy's Avatar
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    As mentioned, the shift kit is a "band-aid" solution. With that being said, my band-aid has been holding up for 4 years now (daily driving). I didn't do the trans cooler, and I do run warm in the summer (as highs as 208*), so I would recommend doing that too. Doing this will help the trans live a longer life as to high of line pressure is a trans killer.

    Here is a good thread to read: http://www.grandprixforums.net/threa...Shift-Solution

    Here is my install: http://chrisb.users.superford.org/Gr...Shift_Kit.html
    Chris B
    2009 CX-9
    ** SOLD ** 2002 GT
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