Tickover on 4.3 V8 Griff

[paul_clark3000]

I have recently purchased a 4.3 pre-cat Griff only to have it break down 3 days later! Nothing serious, just a replacement distrbutor cap and rotor arm. However, I have noticed the tickover is not very smooth (it hovers between 800 - 1000RPM). It may be that I am being paranoid from the breakdown, but I am sure it wasn't doing it before.

Is this a normal characteristic of the engine? or is the burnt cap/rotor arm an indication of some other problem?? Please put a dime bar at ease!!!

Paul

P.S. I have also replaced the HT leads, plugs are new, and heat shields are in fair condition.

[andymadmak]

My old 4.3 was a bit lumpy / hunty at idle.
Relax and enjoy

Andy

[xain]

Standard response: Have you cleaned the stepper motor on the intake plenum?

[BANDIT500]

Paul,

Wouldn't worry too much, i've got a 5.0 Chimaera, and it runs between 700 and 1000 rpm depending on the air temperature.

I know how you feel though, just had a £2k bill for rear diff and new cam (expensive but worth it)

Cheers
Bandit

[JonRB]

I've got severe idling problems that result in stalling - have to heel & toe just to keep the engine alive.

I'm cleaning to stepper motor tonight, BTW - I've been meaning to do it for over a week now and have been driving round the problem in the meantime. Hope I'm not causing any damage as I have an occasional misfire with it too.

Hopefully it will all sort itself out after I've cleaned the stepper motor.

[paul_clark3000]

Thanks for that - I will check the stepper motor soonest to see if the problem lies there, just need to find the damn thing now......!

[s rootsey]

I HAVE A 4.3 CHIMAERA AND ALSO HAVE BAD TICK OVER. I HAVE BEEN TOLD ITS DOWN TO THE STANDARD RANGE ROVER ECU. A RE CHIP WILL SORT OUT THE FUELING PROBLEM WHICH IS GIVING YOU BAD TICK OVER. ALSO THIS WILL LET YOU RUN ON NORMAL UNLEADED AND GIVE YOU A LOT MORE POWER.

[trackdemon]

To the best of my knowledge the 4.3 runs fine on standard UL - or at least mine does. I prefer to put Optimax or other Super's in it, but it seems fine on 95RON. I believe it can cause the engine run a little hotter though? Also, I share the idling issue - fine for about an 1hrs drive then stalls at traffic lights.

[richb]

quote:
I HAVE A 4.3 CHIMAERA AND ALSO HAVE BAD TICK OVER. I HAVE BEEN TOLD ITS DOWN TO THE STANDARD RANGE ROVER ECU. A RE CHIP WILL SORT OUT THE FUELING PROBLEM WHICH IS GIVING YOU BAD TICK OVER. ALSO THIS WILL LET YOU RUN ON NORMAL UNLEADED AND GIVE YOU A LOT MORE POWER.

AH, BUT AS STEVE WILL TELL YOU MARK ADAMS WILL NEED TO SORT OUT THE TICK-OVER ISSUES before HE CAN SET-UP THE NEW CHIP. RICH...

[2 Sheds]

The problem can be as simple as Idle set too low for the cam, example if you have 214 cam (most 4.3's have) then you ideally need 1000 rpm a 234 cam (SEAC's and 4.5BV's) you need 1200 rpm below this and they start to over fuel,In most cases (above 1000rpm)the ECU won't be happy without modification, as they are set to control idle at 800 ish.