dkmcgowan Posted August 7, 2015 Share Posted August 7, 2015 I drilled out the top hole to 3/8, marked where it was, put it into a vice, put in a tight bolt, and started hammering on it. It just bent the tab completely... i see no way this tab would budge. any suggestions? I feel I'm about to damage a brand new OEM mopar CPS sensor :( Link to comment Share on other sites More sharing options...
Blue88Comanche Posted August 7, 2015 Share Posted August 7, 2015 how did you have it in the vice? Link to comment Share on other sites More sharing options...
dkmcgowan Posted August 7, 2015 Author Share Posted August 7, 2015 I used some vice grips to bend the tab back... I was putting it in the vice not the right way, figured it out... Also, I had to use my biggest hammer to move it the first time, hitting it really hard... You must hit it really straight and be careful or you will bend it... I think I got it right now. Also, I added a photo of my measurement, which is 3/8, or 12/32 with the ruler I'm using. It looks like cruiser pushed his even further up, but I stuck with what he wrote and 3/8. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted August 7, 2015 Share Posted August 7, 2015 :thumbsup: Link to comment Share on other sites More sharing options...
cruiser54 Posted August 7, 2015 Share Posted August 7, 2015 Metal bracket loose in the vise a bit with the plastic part just resting on top of the vise. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted August 8, 2015 Share Posted August 8, 2015 I've done the mod on my XJ and MJ and never felt I had to whack it hard. I just tapped it with a dowel and slid it over, then put my thumb on the inside edge when tightening the inboard bolt. Link to comment Share on other sites More sharing options...
dkmcgowan Posted August 8, 2015 Author Share Posted August 8, 2015 I've done the mod on my XJ and MJ and never felt I had to whack it hard. I just tapped it with a dowel and slid it over, then put my thumb on the inside edge when tightening the inboard bolt. I had to nail it once to get it to initially move. I had my small hammer and had to go get a larger one, but once it moved once, it was easy to adjust. Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 8, 2015 Share Posted August 8, 2015 I know this mod is supposed to advance the timing a few degrees, but why did you feel it necessary to do so? Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? Link to comment Share on other sites More sharing options...
dkmcgowan Posted August 8, 2015 Author Share Posted August 8, 2015 I know this mod is supposed to advance the timing a few degrees, but why did you feel it necessary to do so? Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? In the end it did not help my problem, but I'm having hard start issues and low/rough idle... I have just been trying things... I marked it and could put it back if I wanted too. It didn't seem to hurt anything and it seems to be running a little better possibly. I plan to replace the CTS tomorrow and try that, then possibly use a fuel gauge and replace the fuel pump, and clean IAC... Link to comment Share on other sites More sharing options...
cruiser54 Posted August 8, 2015 Share Posted August 8, 2015 Gives it a bit more zip. We Renix guys have knock sensors to compensate for any potential ping. Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 8, 2015 Share Posted August 8, 2015 Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? Huh? Link to comment Share on other sites More sharing options...
cruiser54 Posted August 8, 2015 Share Posted August 8, 2015 Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? You can't tell. The reason is that the CPS is fooling the ECU. Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 8, 2015 Share Posted August 8, 2015 Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? You can't tell. The reason is that the CPS is fooling the ECU. The timing light measures the pulse fire on #1 cylinder based on TDC. Don't matter what happens before it gets there. So, no one has bothered to do a before and after timing test? Link to comment Share on other sites More sharing options...
cruiser54 Posted August 8, 2015 Share Posted August 8, 2015 Also, has anyone checked the timing with a light before and after to see how many degrees it actually advances? You can't tell. The reason is that the CPS is fooling the ECU. The timing light measures the pulse fire on #1 cylinder based on TDC. Don't matter what happens before it gets there. So, no one has bothered to do a before and after timing test? Gotcha. I'm referring to what the factory tester sees. Link to comment Share on other sites More sharing options...
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