XJ running badly.

[LuluBelle]

curiosity what tem do you run at?

[East-Gippsland-XJCherokee]

Originally Posted by LuluBelle

curiosity what tem do you run at?

As per factory gauge, just under half, and has been like that ever since the Adrad radiator was fitted, about 2 years ago in hand with a new clutch fan and thermostat, and reverse scoop and cut outs on the bonnet to vent heat out.

[oldon]

Just a stab in the dark Alex, after your night time drive when it starts to miss, pull up somewhere nice & dark & look for stray sparks while running it up to rpm where it plays up. Take someone with you to rev it while you watch, you can mist a bit of water along the plug leads & other cables to make it more likely to arc, don't zap yourself.

[East-Gippsland-XJCherokee]

Originally Posted by oldon

Just a stab in the dark Alex, after your night time drive when it starts to miss, pull up somewhere nice & dark & look for stray sparks while running it up to rpm where it plays up. Take someone with you to rev it while you watch, you can mist a bit of water along the plug leads & other cables to make it more likely to arc, don't zap yourself.

I have done that several times at night, although (yes believe it or not) it has never missed or stuttered whilst test driving at night time!

I pull over in pitch black, and rev the engine via the throttle body linkage (non one to do it for me), even have pushed and fiddled with wires/connectors, even pushed and touched the spark plug leads, and yeah kick me like a mule LOL, always wakes me up when that happens, but have not seen a spark or anything that looks wrong, but have not done the spray water thing, but will do that but will have to do it, yes I know its odd, when I drive during daylight as it has not ever played up at night.

I was running 2 small solar panels, one that is connected to the main starter battery, one that charges a solar/deep cycle battery in the back, and I have even removed all of that just incase that was causing some gremlin, specially seeing it has never missed/stuttered at night, but it made no diff as this gremlin is still there.

[oldon]

Could be cooler under bonnet temps at night, do you have an infra red temp gun? Suppose you've already tipped water on crank sensor while its running. Is the plastic cover still on the ecu. Something about this has a familiar ring to it, just can't see it through the fog.

[East-Gippsland-XJCherokee]

Originally Posted by oldon

Could be cooler under bonnet temps at night, do you have an infra red temp gun? Suppose you've already tipped water on crank sensor while its running. Is the plastic cover still on the ecu. Something about this has a familiar ring to it, just can't see it through the fog.

I some what doubt it is really enough cooler under the bonnet at night. Have not tried the water on the CPS, and will give that a try tomorrow. Yeah the plastic cover is on/over the ECU.

The only real difference as to driving during the day as to VS nighttime, is I have my lights on, I am not one that is really good when it come to electrics, but maybe having my lights on at night keeps voltage lower, keeps something working somewhat different due to having the lights on?

Maybe next time when the miss/stutter starts during day time, I might turn all the headlights on and see if there is a reaction of some sort?

[oldon]

Maybe next time when the miss/stutter starts during day time, I might turn all the headlights on and see if there is a reaction of some sort?[/QUOTE]

That's a good idea.