Katzer Posted July 18, 2015 Share Posted July 18, 2015 Cruiser My jeep is an 89 2wd 2.5L. When I ohm tested my grounds I got 1.4 ohms. I am going through your steps to try and fiqure out my crappy running issue. I have traced the brown/white wire from IAT sensor and it is spiced with the CTS, and ANOTHER BRWN/WHT THAT RUNS THROUGH THE FIRE WALL AND DISAPPEARS. The MAP sensor's brwn/wh wire and the TPS brwn/wht also disappears into the firewall. There is no other splice unless it is under the dash between the firewall and ECU. Can I just cut the MAP, TPS, IAT, and CTS brwn/wht and spice it with the brwn/wht that runs through the firewall from the IAT, CTS factory splice? (this would be the wire described with all caps) I hope this makes sense. I am just confused because I never found the second splice talked about in your tips. I am guess that the second splice is under the dash. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 18, 2015 Share Posted July 18, 2015 The write up is aimed at 4.0s. On yours, each sensor has it's own ground AT the ECU. Don't splice anything together. Link to comment Share on other sites More sharing options...
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