There is something up with my zed. It got really hot last time I drove it, the oil temperature was up at 95 rather than it's usual 80 and I only have stock water temp gauge so the water was between very hot and very cold.

 

It got hot under very light driving but seemed to plateau at 95, I couldn't get it down and shut it off. The oil is the same as always, just changed along with the oil filter. Other things I have disturbed recently shouldnt have an impact on the temp.

 

I thought the viscous fan may be shot, but after a read up and a look this morning, it seemed fine. Turned fine by hand, whooshed on start and very quickly went quiet. The oil pressure is good and the only other fault is some sort of cold start idle air issue, I will clean the inlet idle... whatever that system is near the battery.

 

However, there is a twittering high pitched whine fron the frontish bottomish of the engine. And it was tappjng like hell this morning from the top.

 

Could the tap be a blocked oil gallery?

Could the whine be a knackered oil/water pump?

There has been a rare start up belt squeal so could it still be the fan?

 

And I checked the oil level, it's fine.

 

Thanks for your help.

Bump, i've got the thing to bits :(

How is the oil pressure?

Its fine, really scratching my head.

 

I didn't mention the idle air issue did I. I have just tried to clean the idle air unit with WD40 because the idle wasn't starting at 1500 like it should, it was about 1000 and it was faultering if you put a small amount of throttle on. It would dip, shudder then rev. I spent ages today, tidying up all the vac lines that are all fine and cleaning that thing. But now it ticks loudly, idles badly, smokes from the back of the engine on both sides. The revs float about when you change gear. :headvswall: I am so worried.

 

However, the 1.5mile drive back to the mess from work just now, it wasnt too bad. Idle was about 1000 jumping to 1500 on the air con button, with a loud whoosh and electrical servo noises??? And it was quickly going through 70 degrees oil temp.

 

What on earth is up with it!

Why would the idle jump up too far when I turn the air con on accompanied by a loud whirr?

 

I really want to fix my car, get bits ordered but dont know where to start.

I ant got a clue whats going on mate.and i feel for you.i know mark d has got an air idle valve thingy and the genuine gasgets for them are only about four pound somthing from the nissan dealers.i know cas i just bought one for mine. Thatll sort your ideal out surley. Good luck bud and hope u get your baby fixed soon.

Thanks mate. I am really wound up over that car at the minute. After Mark fixed it up I drove it about 10 times before it got failed on that MOT. Then after bodymech I perhaps drove it 5 times now its tits, I go to the Falklands next month, if it doesn't get fixed before then it will sit in a car park for 10 weeks covered in snow and seagull shit.

 

I can't drive it, dont know how to fix it. All my work is done in a ever cooling car park. I can't trailer it. I was considering paying peoples air/rail fare to get experts up to the car. Because it costs a absolute fortune to get that car to bloody Nottingham and back.

The only thing I can help you with here is the idle increase when you put the aircon on. That happens because it's an extra load on the engine so it automatically increases the revs to compensate (as the aircon's engine-driven). It's meant to do that, basically - that's why fuel consumption increases when you use the aircon.

 

All your other issues though... not a clue! :( Sorry to hear your woes though, matey!!

Sounds to me like you need to put back together and up your greenflag or whom ever to the max.itll be worth the extra fifty quid when you drive it anywere in the next .say mounth.if y get me

Thanks Si, my air con is totally removed, it has always put the idle up by 100/200rpm on the air con circuit. But now it goes uo by about 700rpm and whirrs loudly.

if the gallery was blocked you would notice a increase in oil pressure at a given rpm/temp as the same amount of oil would have to take fewer paths. Are your belts tight? Could the whirring be a tension pulley on the cam belt?

 

Does the tapping go away when warm or given a bit of a throttle?

 

Also do you know what oil temp sender you have? If so maybe order another one? Or get a multimeter on it as its only a thermistor, an increase or decrease in circuit resistance will change your reading so check all connections.

 

There isn't really a solution here but hopefully gives you a way forward :)

idles shouldn't jump 700rpm with AC engaged, even without the compressor loading the system.

Would be looking at a possible boost leak for erratic idle

 

As for the "whirring" noise. Remove your auxiliary belts individually and momentarily start the car. Issue could be from bearing damage on alternator, viscous fan, PS and Water pump... or worst case, Timing belt idler bearing.

Sorry to hear about your problems Tom , wish i could help shed some light on what could be wrong bud but i aint got a clue :huh: the one thing you put that stuck in my mind was leaving your car and it getting bird lime all over it ! it,ll eat into your paint like paint stripper bud , really needs to be covered bud if your leaving it parked up for a while :yes: