Engine revs high upon start up

[ktm525]

Maybe its just raring to go, it's a thoroughbred! Yeah that's too damn high.

You can see it go to high idle initially and then it jumps up again. Please update thread when you figure it out.

 

[scott schmerge]

Normal might be 2k rpm or less. Mine surges up for the same period of time too high for normal.

Too high, agreed. You do have a CEL on. What are the codes?

 

[Fuji4]

Codes were Too lean, misfire, and vacuum leak

Solution happened today. new PCV valve! That was it.

$30 on amazon overnighted and problem solved.

 

[avslash]

Can you post a link to the one you got that worked?

Looks like there are two or three manufacturers.

 

[Fuji4]

Can you post a link to the one you got that worked?

Looks like there are two or three manufacturers.

Cheriezing PCV Valve Cover Membrane Kit for Land Rover LR4 Range Rover & Sport Jaguar XF XJ XK 3.0L 5.0L LR041443 https://www.amazon.com/dp/B07VSBBF27/ref=cm_sw_r_cp_api_i_jN4RDb24N7A4Z

 

[scott schmerge]

Codes were Too lean, misfire, and vacuum leak

Solution happened today. new PCV valve! That was it.

$30 on amazon overnighted and problem solved.

I’ve been tempted to do mine preventatively and now I’m convinced. This is the second truck I’ve heard of recently that had one of the pcv valves fail around that mileage.

 

[Fuji4]

I’ve been tempted to do mine preventatively and now I’m convinced. This is the second truck I’ve heard of recently that had one of the pcv valves fail around that mileage.

I think there are some mechanics who do it preventatively as early as 30k. Some engines are easier than others. Took us maybe 15 mins total.

 

[Delta V]

I have been dealing with the too lean, a misfire on the 456 bank, and my independent (just looking at codes) told me he thinks it's the high-pressure fuel pump.

Honestly, I kinda agree that it sounds like a vacuum leak issue as well; did your mechanic do anything to test for the vacuum leak? I kinda want something else checked first before diving into the cost of the fuel pumps...

 

[Fuji4]

You can do a smoke test. Mine did not but did a visual of all the lines. There was a hissing sound and one damaged line but the hissing did not go away after replacing the line. The pcv is so cheap and easy and known to degrade that its likely worth it to replace if you have over 50k miles. My pcv bladder was ripped.

 

[Meh9230]

I'm not versed on cars if any type, but that's too high. My LR4 idles high for 5 seconds, but never that high.