NC Tom Posted February 21 Share Posted February 21 I ran across a post stating, "Some people have cured their CPS problems by simply cutting the connector out of the harness and SOLDERING the wires together." Is this legit? Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 21 Share Posted February 21 Yes. Legit fix from Chrysler where the kit would allow you to drill a hole in the firewall and do the modification that way. Link to comment Share on other sites More sharing options...
hgeranium Posted February 22 Share Posted February 22 2 hours ago, eaglescout526 said: Yes. Legit fix from Chrysler where the kit would allow you to drill a hole in the firewall and do the modification that way. So the common CPS issues stem from the connector itself? If you soldered the wires together, how would you check voltage on it? Or does that fix completely eliminate the need to do so in the first place? Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 22 Share Posted February 22 1 hour ago, hgeranium said: So the common CPS issues stem from the connector itself? If you soldered the wires together, how would you check voltage on it? Or does that fix completely eliminate the need to do so in the first place? Well the fix was to eliminate weak signal from the wire to the ECU itself. It has to travel from the CPS to the connector, through the firewall to the ECU which can result in signal drop. Now I do suppose you could keep the connector just in case if the new one fails but shortening the length of wire is said to help with the issue of the signal being weak. I have half the kit somewhere or the full kit. One of the two. Link to comment Share on other sites More sharing options...
hgeranium Posted February 22 Share Posted February 22 Just now, eaglescout526 said: Well the fix was to eliminate weak signal from the wire to the ECU itself. It has to travel from the CPS to the connector, through the firewall to the ECU which can result in signal drop. Now I do suppose you could keep the connector just in case if the new one fails but shortening the length of wire is said to help with the issue of the signal being weak. I have half the kit somewhere or the full kit. One of the two. Woah that’s a really neat fix. Sounds pretty easy too especially for not having to worry about the CPS dropping out anymore. Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 22 Share Posted February 22 1 minute ago, hgeranium said: Woah that’s a really neat fix. Sounds pretty easy too especially for not having to worry about the CPS dropping out anymore. Yeah it’s pretty neat. Not sure why it wasn’t done early on but something tells me this fix is a literal foreshadow to aftermarket parts being crap. Link to comment Share on other sites More sharing options...
hgeranium Posted February 22 Share Posted February 22 Just now, eaglescout526 said: Yeah it’s pretty neat. Not sure why it wasn’t done early on but something tells me this fix is a literal foreshadow to aftermarket parts being crap. Do you actually need the mopar kit or can you just manually shorten the wire and splice it? Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 22 Share Posted February 22 Just now, hgeranium said: Do you actually need the mopar kit or can you just manually shorten the wire and splice it? No you don’t need the kit. You can shorten the wire. Now the one thing the kit does have is the grommet for the wire out the firewall but I suppose one could use anything else. Link to comment Share on other sites More sharing options...
hgeranium Posted February 22 Share Posted February 22 Just now, eaglescout526 said: No you don’t need the kit. You can shorten the wire. Now the one thing the kit does have is the grommet for the wire out the firewall but I suppose one could use anything else. Good to know. I guess I know what I’m doing if my NTK CPS starts crapping out on me Link to comment Share on other sites More sharing options...
garyweb3 Posted February 22 Share Posted February 22 CPS is crank position switch correct? Link to comment Share on other sites More sharing options...
llhat Posted February 22 Share Posted February 22 yes, that is correct... just to clarify, this is eliminating the CPS connector... engine will not run with the CPS deleted completely... Link to comment Share on other sites More sharing options...
Htchevyii Posted February 23 Share Posted February 23 On 2/21/2026 at 7:36 PM, eaglescout526 said: No you don’t need the kit. You can shorten the wire. Now the one thing the kit does have is the grommet for the wire out the firewall but I suppose one could use anything else. I've got the "kit" somewhere, I just bought it for the CPS. It also has a pin to connect directly to the ECM I believe. Link to comment Share on other sites More sharing options...
garyweb3 Posted February 23 Share Posted February 23 23 hours ago, llhat said: yes, that is correct... just to clarify, this is eliminating the CPS connector... engine will not run with the CPS deleted completely... I'm glad you clarified that I didn't get that from the previous posts. Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted February 23 Share Posted February 23 If I'm not wrong this is mainly to address the C101 connector and not the connector on the sensor itself. This is what Cruiser54 has has said about it Link to comment Share on other sites More sharing options...
Thorwon Posted February 23 Share Posted February 23 My 1988 MJ has a new pair of wires coming through the firewall just below the MAP sensor that my CPS plugs into. I guess someone has done something similar to my Comanche. It also has the old CPS wire still in the main harness. Link to comment Share on other sites More sharing options...
NC Tom Posted February 25 Author Share Posted February 25 On 2/21/2026 at 6:29 PM, eaglescout526 said: Yes. Legit fix from Chrysler where the kit would allow you to drill a hole in the firewall and do the modification that way. Okay. Well, I now understand that I was corn-fused. My brain translated "connector" to mean the actual CPS module on the bell housing. And I was thinking, if the CPS can just be removed from the equation, why hadn't Cruiser ever mentioned it? Now I know. Thank you. However, I'm all for simplification. Is the Chrysler kit still available? Has anyone seen a video or tutorial on the process? I know it was mentioned earlier, I just like visuals for reference. Link to comment Share on other sites More sharing options...
Ωhm Posted February 25 Share Posted February 25 TSB 18-51-88 CPS BYPASS Link to comment Share on other sites More sharing options...
NC Tom Posted February 26 Author Share Posted February 26 36 minutes ago, Ωhm said: TSB 18-51-88 CPS BYPASS Link to comment Share on other sites More sharing options...
89 MJ Posted February 26 Share Posted February 26 Alright, I’ll be the one to say I’m anti bypassing the connector. Now when your CPS goes, you’re doing more cutting as opposed to just undoing 2 bolts and a connector. Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted February 26 Share Posted February 26 2 hours ago, 89 MJ said: Alright, I’ll be the one to say I’m anti bypassing the connector. Now when your CPS goes, you’re doing more cutting as opposed to just undoing 2 bolts and a connector. After some searching I found a picture of the kit mentioned in the article posted earlier. The wire harness had a connector for the CPS. This kit just bypasses the c101 connector and has you replace the wires in the ECU connector with the new wires for the harness. Changing the CPS would be the same with or with out this kit. Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted February 26 Share Posted February 26 If someone wants the wire harness there is one on eBay right now. Part number 83100062. https://www.ebay.com/itm/326305177095 Edit: correction the listing says you can buy up to 5 of them. Link to comment Share on other sites More sharing options...
89 MJ Posted February 26 Share Posted February 26 53 minutes ago, Eagle_SX4 said: After some searching I found a picture of the kit mentioned in the article posted earlier. The wire harness had a connector for the CPS. This kit just bypasses the c101 connector and has you replace the wires in the ECU connector with the new wires for the harness. Changing the CPS would be the same with or with out this kit. I see. So it’s only beneficial on the 87-88s that still have the C101. Link to comment Share on other sites More sharing options...
garyweb3 Posted February 26 Share Posted February 26 So is this just for the 4.0 and not the 2.5? Link to comment Share on other sites More sharing options...
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