LR4 V6SC Coolant Issues

1of40

Well-known member
Anyone out there have this engine with greater than 50k and been through low coolant issues?

Two years ago @22k our low coolant warning message appeared. The res was empty. This past weekend @52k the res is empty again. First time they replaced the water pump. I’ve never smelt coolant or seen any drips.
 

vintagepatina

Well-known member
pop the top of the fan shroud back and look at the radiator. i bet you will find a big crusty orange glob of dried leaking coolant.

my LR4 radiator (albeit V8) is actively doing this now but i have yet to change it.

adam
 

1of40

Well-known member
pop the top of the fan shroud back and look at the radiator. i bet you will find a big crusty orange glob of dried leaking coolant.

my LR4 radiator (albeit V8) is actively doing this now but i have yet to change it.

adam
Will do.
 

1of40

Well-known member
It could be the outlet pipe under the supercharger or the crossover pipe on the back of the engine. This two are probably the most common leak areas.

hey, thanks, your description resonated with the service manager very well. we’ll see what they come back with.

he asked if there was anything else and I told him that to me I feel a vibration when idle and in gear with foot on brake. he looked confused. when I drove off in the loaner tho I’m convinced more now that there is a vibration. for instance, if idling at a light and u move to N then the vibe goes away, but not in the loaner.
 

1of40

Well-known member
Why don’t service manager listen? Ours calls to tell us the coolant warning was because the sensor is not working. I tell him that’s great but it doesn’t tell us why the res was dry. Where did the coolant go? He says IDK we pressure tested the system and found no leaks.
 
Last edited:

Al Swearengen

New member
Tell him to put UV dye in the coolant, drive it for an hour or so, then have a look with a UV flashlight.
All will be revealed.
 

1of40

Well-known member
Tell him to put UV dye in the coolant, drive it for an hour or so, then have a look with a UV flashlight.
All will be revealed.
I suggested that. They politely refused so I had them document that they found no leaks despite the fact that the coolant was a gallon low. It’s under warranty for another 48k so I’ll keep an eye on the level and record it next time.
 

jymmiejamz

Founding Member
Callsign: KN4JHI
Do you have a CPO warranty or an aftermarket warranty? The techs really get screwed on labor times if it is CPO, so things are much more likely to be overlooked.

You should look closely at the top of the bell housing from the engine bay. The rear crossover pipe can leak back there and it is a total pain to replace.
 

1of40

Well-known member
Do you have a CPO warranty or an aftermarket warranty? The techs really get screwed on labor times if it is CPO, so things are much more likely to be overlooked.

You should look closely at the top of the bell housing from the engine bay. The rear crossover pipe can leak back there and it is a total pain to replace.
CPO. I’m getting the sense that they have little interest in going the extra mile. Thanks a lot, I’ll try to take a look. I’m also monitoring the cold level mark in the shiny new expansion tank I now own.
 

1of40

Well-known member
So, unfortunately I can’t see anything behind the engine bc everything is packed in there. I decided to double check a few things though because the dealership gave our vehicle an excellent review. They marked everything as good and nothing as needing attention.

Unsurprising was the coolant is below the range it should be already, the PS fluid is below Minimum and even though they said the cabin air filter was good it’s filthy.

This worthless report they gave me says the transfer case fluid and brake fluid quality is good. I guess they expect people to believe everything they say and put in writing.
 

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jymmiejamz

Founding Member
Callsign: KN4JHI
So, unfortunately I can’t see anything behind the engine bc everything is packed in there. I decided to double check a few things though because the dealership gave our vehicle an excellent review. They marked everything as good and nothing as needing attention.

Unsurprising was the coolant is below the range it should be already, the PS fluid is below Minimum and even though they said the cabin air filter was good it’s filthy.

This worthless report they gave me says the transfer case fluid and brake fluid quality is good. I guess they expect people to believe everything they say and put in writing.

The reality is that technicians are paid by the job. A technician is not paid anything to do a multi-point inspection. Most technicians are not going to actually remove the pollen filter or engine air filters to inspect unless they think it is likely that they require replacement and also that the customer will pay for replacement. Obviously it is in the tech's best interest to do a thorough inspection, but unfortunately it is a waste of time most of the time. A tech gets paid 0.2 hours to replace a pollen filter. dealing with all of the crap in a customer's glovebox to check a pollen filter, then reinstalling it in hopes that the customer will buy it if it is even needed is not a good use of time. Lastly, in most cases there is no need to replace the pollen filter between annual services. I would never inspect a pollen filter if a customer regularly has their services done at the dealer. In my opinion no symptom = no repair necessary.
 

1of40

Well-known member
The reality is that technicians are paid by the job. A technician is not paid anything to do a multi-point inspection. Most technicians are not going to actually remove the pollen filter or engine air filters to inspect unless they think it is likely that they require replacement and also that the customer will pay for replacement. Obviously it is in the tech's best interest to do a thorough inspection, but unfortunately it is a waste of time most of the time. A tech gets paid 0.2 hours to replace a pollen filter. dealing with all of the crap in a customer's glovebox to check a pollen filter, then reinstalling it in hopes that the customer will buy it if it is even needed is not a good use of time. Lastly, in most cases there is no need to replace the pollen filter between annual services. I would never inspect a pollen filter if a customer regularly has their services done at the dealer. In my opinion no symptom = no repair necessary.
The point I’m making is this dealership is a con and lied to me when they give me a report checked off saying they did something when in reality they didn’t. I don’t know what else to call it.

I don’t blame the techs. They’re pawns in this game.
 

jymmiejamz

Founding Member
Callsign: KN4JHI
The point I’m making is this dealership is a con and lied to me when they give me a report checked off saying they did something when in reality they didn’t. I don’t know what else to call it.

I think that it is a bit extreme to cal the dealership a con when there are no symptoms associated with the items in question. Just because a filter looks visibly dirty doesn't mean that air flow is restricted.
 

1of40

Well-known member
I think that it is a bit extreme to cal the dealership a con when there are no symptoms associated with the items in question. Just because a filter looks visibly dirty doesn't mean that air flow is restricted.
Okay, Incompetent. The dealership gave me a report that clearly indicated they checked a long list of items and they were good condition. The coolant is below range again already, the PS fluid is below range and their fix for the second coolant problem time in 50k miles is a new sensor and no explanation as to where the coolant has gone. My confidence and trust is low. I have a meeting with the GM and the Service Manager this week to find out how that report is meant to be used. Depending on how much bullshit they throw at me will determine if I leave it with them.
 
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