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When is any engine at it's worst "economy" ? (not to be confused with efficiency) Pulling a trailer uphill at highway speeds? Accelerating hard from a standing start? Stop/start traffic jams? None of the above. As Tony said/typed... It's whenever the vehicle is stationary with the...

I don't know the specifics of the system on an NP300. But with the D40 that sort of problem is very often related to one of the wheel speed sensors. They are prone to getting whacked by debris when off road & triggering 4WD system issues. I'd start by removing the front wheels & having a...

Any luck fitting the side steps? Did you use shims (or a spacer) to better locate the u-bolts? Did you have a corresponding hoe in the chassis for every mounting point? I've just bought a 2nd hand set similar to yours and I've encountered some fitment issues....

How many kilometres on the injectors & seals?

I don't know the exact design specs for the Nav's A/C... But those numbers don't look bad for 134A. You wouldn't want it much higher on the hot side. As for the clutch behaviour, it's quite normal for the system to engage & disengage regularly on partial load. My wife's Honda short cycles the...

So was Richey Rich saying he adds Liquid Copper to his vehicles as a precaution? Not as a temporary fix for a cracked head or blown gasket? (Like adding an oil conditioner or a fuel stabiliser as part of routine maintenance....)

I'll take a loose shot in the dark (I don't have direct experience with this fault) Something has either gone open circuit or shorted to ground (chassis). I don't know how integrated all this stuff is in the newer Navs.....maybe a solid state relay in the sensing circuit has failed? I didn't...

Wash your mouth out! :p:D

I'm a keen DIY mechanic with my vehicles. But exhaust manifolds are a ball-ache. It's often one of those "commit or quit" jobs. If you have MAP Gas or Oxy set, angle grinder, Dremel, anti-seize compound, tap & die set, comprehensive set of spanners etc then you can tackle it yourself - with...

Err...say what? If the Ishi Heavy Industries turbo is good, get that one (JMO)

From what I can see the Fulcrum stuff looks like good value. I have replaced or upgraded suspension on almost every car I've ever owned. There is a difference with shocks & price vs features. If you just want to restore the factory ride and add a factor of comfort & performance, then there are...

Fulcrum looks like good vfm to me... I nearly bought their kit. I don't know about ultra king. I went with a 2" kit from Tough Dog. For less than $2k I got foam cell shocks, 0-300kg springs, poly bushes. The ride quality on and off road is superb. Excellent value IMO. (My Nav is a D40...

Hmm.... I don't know for sure, but my first feeling is that the EGR pipe has cracked and the oily residue you can see has crept out along the pipe. The exhaust gas pressure would push it out. But...in theory it should be pretty dry gas, not oily. Alternatively, the heat exchanger section has...

If you need to get back on the road quickly the fixed (conventional) pulley should work. Within reason, a slightly altered frequency due to different pulley size shouldn't matter if the voltage regulation is working correctly and handles the difference. (but you are building a limb to walk out...

Ahhh....I reckon that's it. Yep, passo side. Just never seen that before.

Do you know why my D40 has a small key slot under the door handle on one side?

Noice! That's a great hack fix if ever I've seen one. Prolly stronger than the original design.

This is mine... chosen by previous owner. (YD25)

Where do you live?

I know the factory set up in older Ford Falcons is pretty good. From memory there's two horns that have a good bright trumpet sound. Should be a cheap & easy upgrade 'cos the wreckers would have hundreds of em? Pretty sure they're a single power wire and grounded thru the bolts to the front...