XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

New idle air valve new problem

 
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Old 04-16-2019, 08:03 PM
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Default New idle air valve new problem

Ok so I thought I would buy a new idle air valve since I was having occasionally where my 93 XJS would stall when I would back up and stop right after start up. Also, some big dummy ripped the old one apart (not gently by the way). I looked around and found an off brand one on Amazon that said it was for an XJ6 but says it fits my 4.0. I put it on and fired it up. The engine fired right up, but started fluctuating the rim from idle to a much higher rpm (I was outside of the car and didnít think to look how high it was). I took it back off and looked at my old one. I had unscrewed the end of my old one before (remember I was rough with it) I screwed it all the way back in and compared them. They were almost exactly the same except the tip was a little bigger on the new one, but looked like it would still close the hole just fine. I installed it back in and fired it up and it started doing the fluctuations! Has anyone else had this? Do the need adjusted somehow?
 
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Old 04-16-2019, 09:09 PM
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Ok so I just found a reference on how to set it! I'll try tomorrow 😊
 
 
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