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1988 Mustang Lx Surging problem

803 Views 7 Replies 4 Participants Last post by  stangem91
I have installed a autometer water temp gauge cause the stock unit went out in my 88 LX. I put the sending unit thats autometer supplied in the stock place and just dissconnected the original sending unit from the harness. when i got it all intalled i started the car and you could tell it was running rich and at an idle it was surging between 4oo to 1000 rpm. So I Plugged the stock unit back in and it stopped. How Do I get rid of the stock sending unit without having the surging problem.. Thanks
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Are you talkin about the temp sending unit that plugs onto your lower intake and reads on your dash, or the collant temp sensor that is on the anti freeze rail that eventually goes to your heater core?
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