Did you do the thermostat when you changed the water pump?
I'd guess you'd quickly notice the temp gauge being low though.
Reggies MOT tomorrow
- Thread starter Grumps
- Start date
I'd guess you'd quickly notice the temp gauge being low though.
Yes Ian. Thermostat changed and running spot.
So why would the oil run cool if the engine it up to temperature? That doesn't make much sense.
What oil are you running?
Injector cleaner next step and.or CO2 sensor?
The oil temp thing was odd as we travelled to Tony's work and it only sat 5 mins before going on the test.
The oil with a probe in place of the dipstick only read tops 55 degrees and under load it went down!!
The oil filter housing under infrared was reading 90 degrees.
Its a fuelling problem at idle really you can smell its rich but the lambda was in spec as all the other mesurements.
Its not drinking fuel at all so can only asume that either the Oxegen sensor is misreading the throttle position is not working right or the air flow meter is not good but disconnecting the air flow never improved or worsened things and on plugging it in it did alter the tickover and then stablilize so appears ok.
Theres no sooting of the exhaust at all its clean, its a bit of a puzzle but what ever it is has been the same for a long while as the co reading has been the same.
Bizarre...
The oil with a probe in place of the dipstick only read tops 55 degrees and under load it went down!!
The oil filter housing under infrared was reading 90 degrees.
Its a fuelling problem at idle really you can smell its rich but the lambda was in spec as all the other mesurements.
Its not drinking fuel at all so can only asume that either the Oxegen sensor is misreading the throttle position is not working right or the air flow meter is not good but disconnecting the air flow never improved or worsened things and on plugging it in it did alter the tickover and then stablilize so appears ok.
Theres no sooting of the exhaust at all its clean, its a bit of a puzzle but what ever it is has been the same for a long while as the co reading has been the same.
Bizarre...
Don't want to be alarmist then, but, could that mean that oil isn't getting around the hot bits or positively that the oil cooler is doing a magnificent job?The oil temp thing was odd as we travelled to Tony's work and it only sat 5 mins before going on the test.
The oil with a probe in place of the dipstick only read tops 55 degrees and under load it went down!!
The oil filter housing under infrared was reading 90 degrees.
Its a fuelling problem at idle really you can smell its rich but the lambda was in spec as all the other mesurements.
Its not drinking fuel at all so can only asume that either the Oxegen sensor is misreading the throttle position is not working right or the air flow meter is not good but disconnecting the air flow never improved or worsened things and on plugging it in it did alter the tickover and then stablilize so appears ok.
Theres no sooting of the exhaust at all its clean, its a bit of a puzzle but what ever it is has been the same for a long while as the co reading has been the same.
Bizarre...
I'd expect it to be running up to or over 100 degrees as it enters the cooler.
Tonys words where you have a supurb oil cooler and seeing as the car was sat still .....must be awesome!! There was no sense to it the probe was mesured to length of the dipstick so should have sat in the sump oil the level was correct..
Injector cleaner been put through today. We're not sure why the oil is running cool. I'm sure @t-tony will be along soon to put some light on things mate.
So sorry to hear no pass hope you get a pass next time.
Tracy.
Tracy.
I will first test the oil temp probe on Monday to make sure it hasn't developed a fault Dave. That's the only sensible conclusion I can draw!
Tony.
Seems plausable it was a little odd...
No pass or fail Tracy, the test didn't happen today.
Best of luck when you go for you MOT.
I wouldn't know, I just stood there smiling!
Just been thinking this through (its taking a long while today to process things - had man-flu for the last three days so the cogs are turning awfully slowly (if at all)).
I though the oil was lifted by the pump and then put through the filter, then through the oil cooler and then on to be distributed around the engine galleries
That means that the oil at the filter should be around the same as the sump and then be cooler as it flows into the engine and return hot to the sump. Am wondering if as you rev the engine that air is being drawn in through the dip stick hole, over your sensor and cooling it down with little or no oil flowing over it.
Need to look under the car at the sump with the infrared thermometer. I'd guess its all ok.
I love injector cleaner
Doesn't happen Ian, if anything there's always crankcase pressure which tries to blow oil vapour, and the probe sometimes, out of the dipstick hole.Can only be a fault somewhere. The probe always only increases oil temp. reading (except on a Z3).
Tony.
Tony.
Yep - I'll take that - forgot about the crankcase pressurisation. What type is the sensor?
Maybe you're dipping into oil thats coming from a cooler part of the engine. Diagrams of the engine block would be useful.
Again, can't happen. This test is devised to make testing as simple as possible, and there's no way the oil could be that cool. Has to be a fault one the probe, possibly connected to the one here who moves at the speed of a glacier. Dave and Ant know to whom I refer.
Tony.
Tony.
Would that be a larger gentleman to your right lol!!