Disco 4 Crossover pipe blowing

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phills1003

New Member
Posts
4
Hi all.

I wonder whether anyone may be able to give me some info/advice.

Having had my disco 4 3.0 v6 looked at by 2 different garages recently. One of them replaced steering column as Ujs had seized. The column had soot on it like exhaust had been blowing on it.
My engine performance has dropped, the mpg has dropped and its making a hissing noise when you put your foot on the accelerator.
The car is now going into limp mode almost every time I drive it.
On a separate note, the viscous fan seems to be running much more than it used to be, even when cold and it seems to rev up in line with the engine revs. It is a new fan and so shouldn't be the fan itself - not sure whether this is related or not but I suspect it could be.
I think I am also getting an exhaust smell when the car is stationary and the heater is on in the cab.

Ive been told that it is the crossover pipe that is leaking exhaust.

I'm told that to get to the crossover pipe that the body has to come off for access to change the part. Its in a very awkward place to get to.
My question: Labour is obviously going to be the killer on the cost here, and so I was wondering whether any of you can recommend someone to do the job or know of someone that has done it before and therefore perhaps save me some money on the labour element of the cost to replace the part?
I'm probably going to get a quote from landrover themselves as you would imagine that they would know how to get to the part to replace!
The problem is that the car has done 140,000 miles and is probably only worth £8k at best if its working.
Any info or help much appreciated!
Thanks
 
The body doesn't have to come off, a lot of places want to take the body off to make it easier for themselves at your expense.
We always used to take the transmission out, the whole job is easily do-able in one day by one tech.
Don't worry too much about the fan for now, get the crossover pipe replaced first.
If you want a recommendation, you need to tell us which part of the country you're in.
 
Hi all.

I wonder whether anyone may be able to give me some info/advice.

Having had my disco 4 3.0 v6 looked at by 2 different garages recently. One of them replaced steering column as Ujs had seized. The column had soot on it like exhaust had been blowing on it.
My engine performance has dropped, the mpg has dropped and its making a hissing noise when you put your foot on the accelerator.
The car is now going into limp mode almost every time I drive it.
On a separate note, the viscous fan seems to be running much more than it used to be, even when cold and it seems to rev up in line with the engine revs. It is a new fan and so shouldn't be the fan itself - not sure whether this is related or not but I suspect it could be.
I think I am also getting an exhaust smell when the car is stationary and the heater is on in the cab.

Ive been told that it is the crossover pipe that is leaking exhaust.

I'm told that to get to the crossover pipe that the body has to come off for access to change the part. Its in a very awkward place to get to.
My question: Labour is obviously going to be the killer on the cost here, and so I was wondering whether any of you can recommend someone to do the job or know of someone that has done it before and therefore perhaps save me some money on the labour element of the cost to replace the part?
I'm probably going to get a quote from landrover themselves as you would imagine that they would know how to get to the part to replace!
The problem is that the car has done 140,000 miles and is probably only worth £8k at best if its working.
Any info or help much appreciated!
Thanks
Welcome to the forum!
You might like to go onto the "Introduce yourself" section at some point.
Isn't the crossover pipe a part of the exhaust, if so does this mean that the engine has to come out to replace the exhaust?
Not familiar with the engine but I do know that some V8s had a crossover pipe.
Lots of articles on it here:
and @gstuart may be able to help. He'll come on soonish now I have tagged him.

Best of luck!
 
The crossover pipe is a separate part that connects the two exhaust manifolds together, they usually fail in the corrugated flex, either due to the number of heat/cool cycles eventually allowing a crack to start with the harmonic vibration, or occasionally (mainly on manual transmission 2.7TDV6's) because the support bracket wasn't refitted after clutch replacement. Given the age & mileage, I'd say it's just metal fatigue taking it's toll. I'd also say you're better off with a genuine part, there are some ropey bits of tat being sold, usually with a 'Britpart' label on them... you'll also want to replace all the exhaust studs, nuts and gaskets.

 
The body doesn't have to come off, a lot of places want to take the body off to make it easier for themselves at your expense.
We always used to take the transmission out, the whole job is easily do-able in one day by one tech.
Don't worry too much about the fan for now, get the crossover pipe replaced first.
If you want a recommendation, you need to tell us which part of the country you're in.
Hi Graculus

Thanks so much for your info.
This is good to hear that it is do able. I am south of Bedford so fairly central and willing to drive if its going to save some cost!
Noted re the aftermarket parts, i think in this situation it would be good to replace with genuine for peace of mind and longevity.
Any recs on mechanics that might be able to do this for me would be welcomed with open arms!
 
The crossover pipe is a separate part that connects the two exhaust manifolds together, they usually fail in the corrugated flex, either due to the number of heat/cool cycles eventually allowing a crack to start with the harmonic vibration, or occasionally (mainly on manual transmission 2.7TDV6's) because the support bracket wasn't refitted after clutch replacement. Given the age & mileage, I'd say it's just metal fatigue taking it's toll. I'd also say you're better off with a genuine part, there are some ropey bits of tat being sold, usually with a 'Britpart' label on them... you'll also want to replace all the exhaust studs, nuts and gaskets.

after some further investigations i have found that the blowing is coming from the egr pipe from exhaust manifold near the steering column. Do you have any knowledge on whether this can be replaced from the drivers side wheel arch? or is it another gearbox out jon? it looks like you can get to one end but not sure about the exhaust manifold end which is further in by the looks of it?

thanks!
 
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