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#4
08-08-2007, 03:49 PM
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Re: 4L80 transmissiom
After the fluid I am afraid it's is transmission trouble. I can not think of anything outside. It must be something on the inside. Unless the shift lever is not moving but you did not say that.
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#5
08-08-2007, 03:57 PM
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Re: 4L80 transmissiom
Are you getting an MIL (check engine, service engine soon) light on the dash?
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#7
08-14-2007, 12:01 AM
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Re: 4L80 transmissiom
Okay, it looks like rebuild time, then. A solenoid failure (which can cause your issue) will set a DTC and illuminate the MIL.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#9
08-17-2007, 10:21 PM
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Re: 4L80 transmissiom
Quote:
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#10
08-27-2007, 04:11 PM
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Re: 4L80 transmissiom
I would also crawl underneath the vehicle and check the factory plug connections that go into the tranny. They can be easily damaged. Possibly you were doing some maintenance and bumped them? Don't do anything without disconnecting battery. My truck went into "limp-home mode" once when the ignition wire to the starter solenoid touched the exhaust and grounded. Also, and this is just my opinion: have the dealership replace the tranny with a remanufactured GM tranny; comes with three-years/36,000 mile warrantee. If I had the time, I could tell you the horror stories I had with my 4L80E rebuild. After letting some indy tranny shop (attempt) to rebuild my tranny (four times in one year), I had a remanufactured tranny put in and have 100,000 miles-plus on it. Indy shop kept saying it was something outside of the tranny causing it to burn up. Funny how the new GM tranny didn't have those same issues once installed!
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