Revs Dropping on brakes

[HAK]

Recently my land rover started spitting on hard acceleration and nearly stalling on hard braking, nearing 100,000km and needing a major service I had a feeling it was the spark plugs that was causing the spitting any way

Yesterday I serviced her gave here new NGK Platinum Spark plugs thank Christ and Allah that we don't have to change them that often, gave him a tranny service radiator flush and of coarse full Oil change and Air Flitter and fuel treatment for injector etc. The coughing at high revs has stopped but the near stalling on heavy braking hasn't gone away what be causing that do you guys think. Other then that its had a great deal of power increase

could the near stalling on heavy braking be vacume issue, or it that normal. Knowing LR its a speacial device to switch the egine incase of impact hehehehehehe

[mcrover]

Not sure if LR are the same as Jeep in having a Vacuum compensator switch which raises the revs on vac drop.

My ZG Grand Cherokee used to do exactly what you have described and thats what it turned out to be but Ive never come across it on any other make.

The problem with my switch was it was cracked and when it would open to do what ever it did it was letting in air which then dropped the revs to nearly stalling but then compensated it by upping the revs electronically which not only made it very interesting to drive in traffic but very thirsty.

[Tank]

Not sure if LR are the same as Jeep in having a Vacuum compensator switch which raises the revs on vac drop.

My ZG Grand Cherokee used to do exactly what you have described and thats what it turned out to be but Ive never come across it on any other make.

The problem with my switch was it was cracked and when it would open to do what ever it did it was letting in air which then dropped the revs to nearly stalling but then compensated it by upping the revs electronically which not only made it very interesting to drive in traffic but very thirsty.
Check out the Valve on the back of the plenum chamber, it controls the air at or near idle, first check if the bolts holding it are tight, I've seen a few that are loose, remove and clean carbon off, also check the wiring plug to the AFM/MAF, pull it out and clean it with contact cleaner spray and refit, make sure it is stable, not loose, Regards Frank.

[HAK]

Thanks for the info guys