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Land rover discovery 4, 2.7 ltr diesel engine

  • jb20897
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3 years 2 months ago #57540 by jb20897
Land rover discovery 4, 2.7 ltr diesel engine was created by jb20897
Hi all, I've got a 2012 discovery 4 that fluctuates RPM between 1700-1900 when cruising at around 80km/h. I have no DTC's and limited PIDs with the factory scan tool. I've carried out a smoke test and have no intake leaks. I also carried out a dynamic airpath test and 1 of the EGRs reported low flow during fast idle, however when checking the live data the EGRs don't appear to be sticking or sluggish and match the command position. Im leaning towards and EGR issue but am struggling to confirm this. And I don't want to be a parts ha. I'd love to hear your thoughts.

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3 years 2 months ago #57541 by Chad
Replied by Chad on topic Land rover discovery 4, 2.7 ltr diesel engine
My first thought is a Torque Converter Lock-up issue.
"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right. :-)

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3 years 2 months ago - 3 years 2 months ago #57608 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Land rover discovery 4, 2.7 ltr diesel engine
You might be looking at two different issues.
As Chad posted the torque converter might going in and out of lock-up
The EGR would in my mind be carbon build up in the valve or passages rather than an actuation issue
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Last edit: 3 years 2 months ago by Andy.MacFadyen.

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