Coolant Crossover Pipe Repair 5.0 V8

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

RoverTide

Full Access Member
Joined
Nov 3, 2022
Posts
100
Reaction score
79
Location
Memphis, TN
I have the kit from Astro, it has the correct cap for the coolant reservoir.
For what you get it's overpriced as it is built for casual use, but it's been ok so far...
Ah, yes, I recognize that from your crossover repair "movie"... I watched that part again yesterday... I'm thinking it will take a couple of vacuums to get all the air out. I think that's what you determined as well.
 

JL-LR4

New Member
Joined
Mar 21, 2024
Posts
2
Reaction score
1
Location
Edmonton
I changed out the front crossover pipe after discovering a coolant leak on my 2012 RR Sport. Started it up fine but then had the "restricted performance" message come on. After some research, we then went through the steps to relieve the air from the coolant system. Followed the steps of the manual to get rid of the airlock.

Everything was going to plan and it started up fine after that process. However, it still had the error message on after following the steps to circulate the coolant through the system at 2000 and then 3500 rpms with the heaters on and producing heat.

I shut the vehicle off and wanted to restart it right after to see if that message would clear. At this point, the whole vehicle went dead after hitting the start button again. No ignition, no lights, and nothing at all showing electrical signs of life. We went through the fuses and connections but didn't find anything there.

Any suggestions? It's a dead paperweight right now and I'm a little scared to get it towed to the shop for an unknown bill.

I will add that we did not change the rear crossover pipe or water pump so should not be related to those.

Thanks for any suggestions.
 

ugmw177

Full Access Member
Joined
May 25, 2023
Posts
170
Reaction score
107
Location
Charlotte NC
I changed out the front crossover pipe after discovering a coolant leak on my 2012 RR Sport. Started it up fine but then had the "restricted performance" message come on. After some research, we then went through the steps to relieve the air from the coolant system. Followed the steps of the manual to get rid of the airlock.

Everything was going to plan and it started up fine after that process. However, it still had the error message on after following the steps to circulate the coolant through the system at 2000 and then 3500 rpms with the heaters on and producing heat.

I shut the vehicle off and wanted to restart it right after to see if that message would clear. At this point, the whole vehicle went dead after hitting the start button again. No ignition, no lights, and nothing at all showing electrical signs of life. We went through the fuses and connections but didn't find anything there.

Any suggestions? It's a dead paperweight right now and I'm a little scared to get it towed to the shop for an unknown bill.

I will add that we did not change the rear crossover pipe or water pump so should not be related to those.

Thanks for any suggestions.
probably totally unrelated unless perhaps you left some wires/sensors disconnected. I would check battery voltage with dvm. if 12.5 or so or better then check the main ground line to the block. It is known to corrode and if you spilled coolant on it that could be the issue. remove the securing bolt and clean the ring terminal and clean the mounting area as well.
 

JL-LR4

New Member
Joined
Mar 21, 2024
Posts
2
Reaction score
1
Location
Edmonton
probably totally unrelated unless perhaps you left some wires/sensors disconnected. I would check battery voltage with dvm. if 12.5 or so or better then check the main ground line to the block. It is known to corrode and if you spilled coolant on it that could be the issue. remove the securing bolt and clean the ring terminal and clean the mounting area as well.
Thanks! Turns out it was indeed totally unrelated!
 

Land Rover Joe

Full Access Member
Joined
Apr 10, 2011
Posts
423
Reaction score
117
Location
Oxford
Jumping on this thread -

So I redid the entire cooling system on my 2010 LR4 5.0 as part of my engine rebuild. I bought OEM parts from Atlantic British...we will see how things hold up.

I have posted in other threads about the issue from my "Amazon" water pump....

https://www.landroverworld.org/threads/2013-lr4-v8-coolant-leak.46004/

So a lot of support for the highest quality parts from my side.

All that said, this YouTube video came out this morning from Wraptor Customs and Tuning in the UK:


I posit this to the group because he mentions a lot of aftermarket (metal) parts to replace many of these plastic bits for the cooling system. Unfortunately, he is specifically talking about the turbocharged engines (problem for our 5.0L folks)...but perhaps they supply for 5.0L Normally Aspirated or most of the components are identical?

Just a thought and maybe someone has experience with the metal components, such as several of the brass fittings mentioned in this thread....
 

M32H32IS

Full Access Member
Joined
Feb 8, 2022
Posts
233
Reaction score
97
Location
Texas
Jumping on this thread -

So I redid the entire cooling system on my 2010 LR4 5.0 as part of my engine rebuild. I bought OEM parts from Atlantic British...we will see how things hold up.

I have posted in other threads about the issue from my "Amazon" water pump....

https://www.landroverworld.org/threads/2013-lr4-v8-coolant-leak.46004/

So a lot of support for the highest quality parts from my side.

All that said, this YouTube video came out this morning from Wraptor Customs and Tuning in the UK:


I posit this to the group because he mentions a lot of aftermarket (metal) parts to replace many of these plastic bits for the cooling system. Unfortunately, he is specifically talking about the turbocharged engines (problem for our 5.0L folks)...but perhaps they supply for 5.0L Normally Aspirated or most of the components are identical?

Just a thought and maybe someone has experience with the metal components, such as several of the brass fittings mentioned in this thread....
I live in Houston and there’s a shop that specializes in JLR here called Euro Amp.

One day I’ll stop by their facility and get some shots for the group.

Anyway, they manufacture metal replacement cooling system parts for AJ engines. Here’s a link to their site:

 

Androomantoo

Active Member
Joined
Aug 13, 2021
Posts
29
Reaction score
34
Location
Olathe, KS
I posit this to the group because he mentions a lot of aftermarket (metal) parts to replace many of these plastic bits for the cooling system. Unfortunately, he is specifically talking about the turbocharged engines (problem for our 5.0L folks)...but perhaps they supply for 5.0L Normally Aspirated or most of the components are identical?

Just a thought and maybe someone has experience with the metal components, such as several of the brass fittings mentioned in this thread....
Unfortunately, the metal parts for the V6 are not shared with the V8. The only aluminum upgrades I'm aware of for the AJ133 V8 are the small tube between the water pump and oil cooler and the rear crossover that EuroAmp sells (which is fairly untested from what I can tell).
 

Latest posts

Members online

Forum statistics

Threads
37,146
Posts
226,329
Members
31,263
Latest member
KyleK951
Top