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What behavior would a 5.3 swap with a failing Land Rover CPS exhibit? Out of curiosity....
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Update.
After work I decided to fiddle with the truck a bit. Previously I only had only 1 ground coming off the battery going to the alternator bracket. I decided to add another ground from the battery to a stud behind the driver headlight. Reconnected everything and went for a long drive. No more issues. I'll update over the next few days if this actually fixed everything. |
Originally Posted by Boostle
(Post 868393)
Update.
After work I decided to fiddle with the truck a bit. Previously I only had only 1 ground coming off the battery going to the alternator bracket. I decided to add another ground from the battery to a stud behind the driver headlight. Reconnected everything and went for a long drive. No more issues. I'll update over the next few days if this actually fixed everything.
Originally Posted by Boostle
(Post 868349)
What behavior would a 5.3 swap with a failing Land Rover CPS exhibit? Out of curiosity....
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Thank you both for these posts. Wondering if that is my issue as well. My symptoms a little different in that the Hill decent, traction control and M&S lights come on consistently only when I turn on the AC/HVAC. If I leave the HVAC off, no warning lights come on. With warning lights illuminated, turn HVAC off and restart the engine. Lights will go off. Engine functions perfectly no issues starting running etc. RPM showing normal.
This did work previously (no warning lights). After fan shroud install adjustment to some of the wiring this issue started occurring. - Replaced the CPK just to make sure that wasn’t issue - Disconnected plugs for the electric fans (radiator). Issue still occurs. - Increased idle to 800 then 850. No change (thought maybe it was dip in idle speed) Appreciate any help. here are some screen shots. Sorry for taking up the forums storage space.. https://cimg6.ibsrv.net/gimg/landrov...840944aea.jpeg https://cimg8.ibsrv.net/gimg/landrov...e524ce5a0.jpeg https://cimg9.ibsrv.net/gimg/landrov...735cccbab.jpeg https://cimg0.ibsrv.net/gimg/landrov...fbda8c69a.jpeg https://cimg2.ibsrv.net/gimg/landrov...c933cbdd6.jpeg https://cimg4.ibsrv.net/gimg/landrov...f1436f4ff.jpeg https://cimg5.ibsrv.net/gimg/landrov...92ebf40db.jpeg |
Originally Posted by 04disco2va
(Post 868492)
Thank you both for these posts. Wondering if that is my issue as well. My symptoms a little different in that the Hill decent, traction control and M&S lights come on consistently only when I turn on the AC/HVAC. If I leave the HVAC off, no warning lights come on. With warning lights illuminated, turn HVAC off and restart the engine. Lights will go off. Engine functions perfectly no issues starting running etc. RPM showing normal.
This did work previously (no warning lights). After fan shroud install adjustment to some of the wiring this issue started occurring. - Replaced the CPK just to make sure that wasn’t issue - Disconnected plugs for the electric fans (radiator). Issue still occurs. - Increased idle to 800 then 850. No change (thought maybe it was dip in idle speed) Appreciate any help. here are some screen shots. Sorry for taking up the forums storage space.. https://cimg6.ibsrv.net/gimg/landrov...840944aea.jpeg https://cimg8.ibsrv.net/gimg/landrov...e524ce5a0.jpeg https://cimg9.ibsrv.net/gimg/landrov...735cccbab.jpeg https://cimg0.ibsrv.net/gimg/landrov...fbda8c69a.jpeg https://cimg2.ibsrv.net/gimg/landrov...c933cbdd6.jpeg https://cimg4.ibsrv.net/gimg/landrov...f1436f4ff.jpeg https://cimg5.ibsrv.net/gimg/landrov...92ebf40db.jpeg |
Originally Posted by 04disco2va
(Post 868492)
Thank you both for these posts. Wondering if that is my issue as well. My symptoms a little different in that the Hill decent, traction control and M&S lights come on consistently only when I turn on the AC/HVAC. If I leave the HVAC off, no warning lights come on. With warning lights illuminated, turn HVAC off and restart the engine. Lights will go off. Engine functions perfectly no issues starting running etc. RPM showing normal.
This did work previously (no warning lights). After fan shroud install adjustment to some of the wiring this issue started occurring. - Replaced the CPK just to make sure that wasn’t issue - Disconnected plugs for the electric fans (radiator). Issue still occurs. - Increased idle to 800 then 850. No change (thought maybe it was dip in idle speed) Appreciate any help. here are some screen shots. Sorry for taking up the forums storage space.. WFPDK is TPS system and related circuit. Since your problem is only when the A/C, my guess is the A/C is causing a voltage/current drain. New ground like Boostle says may help. I’d also check the ground from the battery to the engine block - if it is not a solid point it can cause a bunch of issues. Have also heard of adding additional ground from block to body. |
Originally Posted by CaptainAaron
(Post 868499)
The T_ANS and MD_IND are from not running the MAF. On their own, I do not believe they will cause the M/S lights.
WFPDK is TPS system and related circuit. Since your problem is only when the A/C, my guess is the A/C is causing a voltage/current drain. New ground like Boostle says may help. I’d also check the ground from the battery to the engine block - if it is not a solid point it can cause a bunch of issues. Have also heard of adding additional ground from block to body. |
Thank you Boostle and CaptainAaron. I’ll get those things done and cross fingers!
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I took a 4 hour round trip drive this weekend. No more lights. Looks like bad/insufficient grounding caused my issues.
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Originally Posted by Boostle
(Post 868617)
I took a 4 hour round trip drive this weekend. No more lights. Looks like bad/insufficient grounding caused my issues.
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