88ComancheMitch Posted September 17, 2014 Author Share Posted September 17, 2014 This is the image I was looking at the kind of made me think that the one on the left was supposed to be the CTS...notice the relation to the exhaust. Also saw a picture of a real block that made me think differently. I'll have to check that rear spot Friday, I guess it's just covered in gunk. If it's easier to get a 5/16 square socket, then I'l; just do that over drilling/tapping. Thanks for the info guys. I know I've been asking, and not really making an progress. I'm planning a wedding, working full time, and going to school full time. Taking all the effort I have to do anything other than sleep and work. Link to comment Share on other sites More sharing options...
cruiser54 Posted September 17, 2014 Share Posted September 17, 2014 I've never seen a 4.0 block that both holes weren't tapped and plugged. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 17, 2014 Share Posted September 17, 2014 My 96 block only has the rear drain plug. Link to comment Share on other sites More sharing options...
cruiser54 Posted September 17, 2014 Share Posted September 17, 2014 Interesting. Maybe that's a later block in his Jeep? I've used 92 blocks in a Renix and they had 2 plugs. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 18, 2014 Share Posted September 18, 2014 He could always look at the casting number on the block. 8933002665, 53005535: 1987-1990 Renix blocks53008405: 1991-1995 YJ, XJ, ZJ3010341, 53010449, 53020569: 1996-1998 TJ, XJ, ZJ (except 1998 ZJ)53020514, 53020515: 1998 ZJ53010449AA : 1999-2001 XJ, 1999 TJ53010327AB, 53010328AB: 1999-2004 WJ & 2000-2006 TJ Link to comment Share on other sites More sharing options...
Comanchemodder Posted September 18, 2014 Share Posted September 18, 2014 Sorry, Let me clarify. Anyone know the thread size of the port below: Link to comment Share on other sites More sharing options...
88ComancheMitch Posted September 18, 2014 Author Share Posted September 18, 2014 He could always look at the casting number on the block. 8933002665, 53005535: 1987-1990 Renix blocks 53008405: 1991-1995 YJ, XJ, ZJ 3010341, 53010449, 53020569: 1996-1998 TJ, XJ, ZJ (except 1998 ZJ) 53020514, 53020515: 1998 ZJ 53010449AA : 1999-2001 XJ, 1999 TJ 53010327AB, 53010328AB: 1999-2004 WJ & 2000-2006 TJ I'll check this out while I'm under there. Link to comment Share on other sites More sharing options...
HOrnbrod Posted September 18, 2014 Share Posted September 18, 2014 Sorry, Let me clarify. Anyone know the thread size of the port below: Metric thread: 12mm x 1.5 Link to comment Share on other sites More sharing options...
metrictonner Posted September 23, 2014 Share Posted September 23, 2014 The Renix ECU has default settings for the sensors when it detects a sensor out of range/not connected. You are saying the default for the block temperature sensor is better than the reading it is sending. Could be, sensors do go bad in strange ways. I can't imagine a 2000 rpm idle under any condition, however. Good way to loose bearings, seals and oil filter on a cold engine. Link to comment Share on other sites More sharing options...
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