I am still trying to track down a engine harshness issue, I have the fault code P1173.

I do know it says its a lean/rich fault on the RH side, is the RH bank side ( when sitting in the truck ) on your right?

Or in the UK, the drivers side, correct.

I just purchased 2 new OEM O2 sensors and I really hope this fixes my problem.

Thanks 2003 RR 4.4 only 40k miles (current)
2004 RR 4.4 ( just sold)
2000 RR 4.6 (sold)

1959 series 2 109
1956 series 1 1956

fingers crossed mate "RANGEISM WILL NOT BE TOLERATED"
www.futuresecurityservices.co.uk
Pretlove says , '' I want my car back "

Look at RAVE and find something you know on the range rover that is noted as right side.

Good Luck... 2004 black Vogue TD6

herman maire wrote:

I am still trying to track down a engine harshness issue, I have the fault code P1173.

I do know it says its a lean/rich fault on the RH side, is the RH bank side ( when sitting in the truck ) on your right?

Or in the UK, the drivers side, correct.

I just purchased 2 new OEM O2 sensors and I really hope this fixes my problem.

Thanks

I take it you've checked the PCV system? All 4 hoses? A vacuum leak will manifest itself as a fuel trim error due to the unmetered air.... 

With cars, R and L is always in the direction of travel - hence RHD and LHD  
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)

SteveMFr wrote:

With cars, R and L is always in the direction of travel - hence RHD and LHD

Wanted to update this.

I have had my engine compression checked. The engine appears to be in perfect health, the gauge that I used was not the best but all the cylinders were between 175psi and 180psi on a hot engine. I was quite please with the results.

So, theres no chance that the engine harshness is coming from a damaged cylinder.


I purchased 2 brand new O2 sensors for the RHD side. Once installed, I disconnected the battery to reset the check engine.

With the check engine light off, the engine is still just as harsh.... within 30KM the check engine is back on.


I have a appointment with the land rover dealer this tuesday..... if they cant figure out what the problem is, I am really at a loss as to what to do.


I have checked the following-

spark plugs
coil packs
new O2 sensors
all intake piping ( maybe theres still something I am missing)
MAF
 2003 RR 4.4 only 40k miles (current)
2004 RR 4.4 ( just sold)
2000 RR 4.6 (sold)

1959 series 2 109
1956 series 1 1956

You didn't answer my question above... Were all 4 PCV pipes replaced? 

dan_uk_1984 wrote:

You didn't answer my question above... Were all 4 PCV pipes replaced?

On your other post I linked to a BMW forum where the guy was having similar problems PLUS a lot of noise coming from his PCV system.

There are 4 pipes in your PCV system, the two easy ones on the top, then two difficult ones which run down the back. Then as you say, there is the valve itself. BMW owners generally experience failure of the rubber diaphragm between 80-120K and I imagine we should expect to see the same on our cars.

The PCV valve itself is not massively expensive (I think I paid £60-£70) bit it's a pig to change and the hour rate can add up depending on which garage you use.

D 

Might be worth a look for the PCV http://www.rswsolutions.com/index.php?opti...;Itemid=78

I guess its possible it has something to do with the PCV system....

I will say that on my other MK3 RR that had the check engine light last summer, all the PCV pipes completely failed, other than the check engine light, it still ran very nice..... smooth idle, normal MPG and no engine harshness.

I dont get it  2003 RR 4.4 only 40k miles (current)
2004 RR 4.4 ( just sold)
2000 RR 4.6 (sold)

1959 series 2 109
1956 series 1 1956

There are two halves to the PCV system though, hence the four pipes. Did you replace/check all four? Or just the two on the top? 

dan_uk_1984 wrote:

There are two halves to the PCV system though, hence the four pipes. Did you replace/check all four? Or just the two on the top?

Just wanted to update this,

I went to the dealer last week to have a 4 wheel alignment+ suspension calibrated ( HUGE difference) , rear hub bushings and the check engine light checked .


$1300 later , about 20km from the dealer the check engine comes on with the same error code P1173!!!

The engine is still just as harsh to the point where you feel it in the floor pan with your feet.....

The truck is handling GREAT, almost agile. Engine has plenty of power and the compression is still perfect BUT the engine harshness is taking any enjoyment out of driving such a beautiful truck.

Any other suggestions ? Maybe a BMW specialist this time? I am at a loss as to what to do...... I just want this truck running like it did in january. 2003 RR 4.4 only 40k miles (current)
2004 RR 4.4 ( just sold)
2000 RR 4.6 (sold)

1959 series 2 109
1956 series 1 1956