Guage readings

PhilGee · 14-08-09, 07:58 PM

Picking up my 80 sport next week and was wondering what the oil pressure guage should be reading. At idle it was around 1 and on fast idle, around 1500-2000, was just below 5. Does this sound about right?
Thanks, Phil .

Emjay · 14-08-09, 08:03 PM

On my 1.9 5 pot the guage reads about 2 and a half bar when fully warmed at idle then goes off scale when driven (which I assume is ok).

However when I put the heater fan on full speed the oil temp guage rises and pressure guages drop considerabley. I guess there is a voltage drop somewhere but it did freak me out last week when I put the fan on to cool me down a bit then panicked cos I though the engine was about to overheat/run out of oil

vag80 · 14-08-09, 08:05 PM

that sounds good as long as have over 2bar at 2000rpm your good

PhilGee · 14-08-09, 08:12 PM

Phew, started to panic a bit

Seemed to run ok anyways, but did have a bit of an oil leak from the cam cover gasket. 1st of many jobs to be done

vag80 · 14-08-09, 08:15 PM

if it's an 8 valve thats normal change the rockercover gasket to a rubber one that'll stop it

4v6 · 14-08-09, 09:10 PM

Engine oil of 1 bar at idles nothing to be concerned about as the engines not under any load, if however that situation was occuring at revs and load then id be worried, but yours sounds good to me.

irish80sport · 15-08-09, 12:38 AM

mine always sits at around 3.5 at idle and then off the scale at any rev. but i always wondered about my oil temp. it never moves only slightly above 60, im guessing its not working?

msh · 15-08-09, 02:33 PM

Quote:

Originally Posted by vag80

that sounds good as long as have over 2bar at 2000rpm your good

...but it's absolute minimum. My 3A iddling @ 1-1,1k [MAF potentiometr gone as usual] had something about 2 bar and 5k about 1,8 when fully warmed up. With worned out main bearings @ iddle were 1 bar.

Quote:

Originally Posted by Emjay

However when I put the heater fan on full speed the oil temp guage rises and pressure guages drop considerabley. I guess there is a voltage drop somewhere but it did freak me out last week when I put the fan on to cool me down a bit then panicked cos I though the engine was about to overheat/run out of oil

What shows voltmeter in that moment?

If there would be not enough oil in engine [and that's about 1 liter below minimum!], pressure would fluctuate

Emjay · 15-08-09, 06:04 PM

Quote:

Originally Posted by msh

...but it's absolute minimum. My 3A iddling @ 1-1,1k [MAF potentiometr gone as usual] had something about 2 bar and 5k about 1,8 when fully warmed up. With worned out main bearings @ iddle were 1 bar.

What shows voltmeter in that moment?

If there would be not enough oil in engine [and that's about 1 liter below minimum!], pressure would fluctuate

the voltmeter drops too, less than 11 volts on a healthy 12 volt new battery.

msh · 15-08-09, 07:32 PM

Quote:

Originally Posted by Emjay

the voltmeter drops too, less than 11 volts on a healthy 12 volt new battery.

W...w....what? Engine is running but u have 11 volts?

How much is when your fan isn't running then?

14-08-09, 08:05 PM	#3
vag80 Senior Member Classic Audi Club Member Join Date: Oct 2008 Location: Bracknell Posts: 1,967	that sounds good as long as have over 2bar at 2000rpm your good __________________ nothing like a bit of deep dish 200k club member 87-b3 80 83-4000 2 door

14-08-09, 08:15 PM	#5
vag80 Senior Member Classic Audi Club Member Join Date: Oct 2008 Location: Bracknell Posts: 1,967	if it's an 8 valve thats normal change the rockercover gasket to a rubber one that'll stop it __________________ nothing like a bit of deep dish 200k club member 87-b3 80 83-4000 2 door

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14-08-09, 08:03 PM	#2
Emjay Man Fettler Extraodinaire Classic Audi Club Member Join Date: Jul 2008 Location: Up my own arse blowing smoke Posts: 7,417	On my 1.9 5 pot the guage reads about 2 and a half bar when fully warmed at idle then goes off scale when driven (which I assume is ok). However when I put the heater fan on full speed the oil temp guage rises and pressure guages drop considerabley. I guess there is a voltage drop somewhere but it did freak me out last week when I put the fan on to cool me down a bit then panicked cos I though the engine was about to overheat/run out of oil

14-08-09, 08:12 PM	#4
PhilGee Grown up member Join Date: Aug 2009 Location: Darlington, NE of England Posts: 62	Phew, started to panic a bit Seemed to run ok anyways, but did have a bit of an oil leak from the cam cover gasket. 1st of many jobs to be done

14-08-09, 09:10 PM	#6
4v6 Ex Member Classic Audi Club Member Join Date: Dec 2007 Posts: 5,565	Engine oil of 1 bar at idles nothing to be concerned about as the engines not under any load, if however that situation was occuring at revs and load then id be worried, but yours sounds good to me.

15-08-09, 12:38 AM	#7
irish80sport Grown up member Join Date: Dec 2008 Posts: 79	mine always sits at around 3.5 at idle and then off the scale at any rev. but i always wondered about my oil temp. it never moves only slightly above 60, im guessing its not working?