XJ6 & XJ12 Series I, II & III 1968-1992

Limp Mode 1990 XJ6

 
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Old 03-26-2008, 01:11 PM
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Default Limp Mode 1990 XJ6

I have been dealing with the limp mode coming on and off. I replaced the transmission control unit under the pass. side dash ( it was used) The old control unit DBV5080 would not come out off limp mode at all. Sometimes when you turn the key on and off it will go out of limp mode for a very short while.Cleaned the cable ends with WD40 on the electrical hook up to the trans on the left side. What next??? Thanks all....
 
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Old 03-26-2008, 07:25 PM
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Default RE: Limp Mode 1990 XJ6

may be a code for the trani.. you will have to go to a dealer that still has and uses PDU which is a old diagnostic reader... i remembering using it on a 1990..
 
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Old 03-27-2008, 09:46 AM
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Default RE: Limp Mode 1990 XJ6

Sounds like you need to adjust the rotary switch. Driver's side of the transmission.
 
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Old 03-27-2008, 12:28 PM
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Default RE: Limp Mode 1990 XJ6

The on board computer reads: Fuel 69
 
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Old 03-27-2008, 12:31 PM
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Default RE: Limp Mode 1990 XJ6

The on board computer reads: Fuel 69
 
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Old 03-28-2008, 01:02 PM
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Default RE: Limp Mode 1990 XJ6

I read your description that you gave to Russ on 9/11/2007...I'll try the rotary switch twist tomorrow..Thanks
 
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Old 03-28-2008, 03:35 PM
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Default RE: Limp Mode 1990 XJ6

I also sent a PM to you.
 
 
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