Jump to content
SAU Community

Recommended Posts

Hey guys

Not sure if this is the right section or not but anyway.

I done a bit of a braking test yesterday to see how well the abs worked (stupid i know, but i was curious to see how well it worked :P) so i was doing about 100kph then put the brakes on as hard as i could, while coming to a complete stop the oil light came on ( the little oil can symbol that lights up red on the top right hand side of the cluster) i didnt keep my eye on the oil pressure gauge so i dont know what it was reading.

Is this something i should be concerned about ,the oil level is just above the full line, my old r32 gtst actually done the exact same thing. I am using the stock brake setup with 235 front tyres, so somehow i dont think this would be enough to cause oil starvation while under hard braking but please correct me if im wrong.

Any comments would be great :(

Cheers

Link to comment
https://www.sau.com.au/forums/topic/194663-low-oil-pressure-while-braking/
Share on other sites

Depends, If you were pushing it real hard before you started braking, then you've probably got a lot of oil in the top half of your engine, then the braking might be enough to make it appear as though the level is low?

Although I'd imagine that the GTS-T sump is fairly well baffled?

Depends, If you were pushing it real hard before you started braking, then you've probably got a lot of oil in the top half of your engine, then the braking might be enough to make it appear as though the level is low?

Although I'd imagine that the GTS-T sump is fairly well baffled?

Nope i wasnt pushing it, was just cruising at 100kph then put the brakes on.

it doesnt hurt to run it over the full line to keep it safe. there may be other issues with your oil control system to cause it to surge under breaks..

Yea i always run the oil level a bit above the full mark in all the skylines ive had, any ideas on what other issues there might be? The sump is in perfect condition (no dents etc) and i change the oil and filter every 4xxxkms ,i use castrol magnatec 10w40, the car has only done 86xxxmks.

As i said above my o0ld r32 used to do the exact same thing, is there anyone willing to go and test it on there own car to see if the same thing happens?

Cheers

the common oil pressure sender fault usually manifests as a problem with the pressure reading, but i have never heard of the oil light coming on with an oil pressure sender issue...

i would be keeping a real close eye on it

if you ever see the light again, shut the engine off immediately

but if it were me i would be considering getting an expert opinion, because if its the oil pump that is dying and you don't fix it, you could be up for a new engine..

the common oil pressure sender fault usually manifests as a problem with the pressure reading, but i have never heard of the oil light coming on with an oil pressure sender issue...

i would be keeping a real close eye on it

if you ever see the light again, shut the engine off immediately

but if it were me i would be considering getting an expert opinion, because if its the oil pump that is dying and you don't fix it, you could be up for a new engine..

the oil press light is driven by the sender also... so if thats faulty then its going to makle the light and guage read wacko

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Surely somebody has one in VIC. Have you asked at any shops?  Is this the yearly inspection or did you get a canary?
    • This is where I share pain with you, @Duncan. The move to change so many cooling system pieces to plastic is a killer! Plastic end tanks and a few plastic hose flanges on my car's fail after so little time.  Curious about the need for a bigger rad, is that just for long sessions in the summer or because the car generally needs more cooling?
    • So, that is it! It is a pretty expensive process with the ATF costing 50-100 per 5 litres, and a mechanic will probably charge plenty because they don't want to do it. Still, considering how dirty my fluid was at 120,000klm I think it would be worth doing more like every 80,000 to keep the trans happy, they are very expensive to replace. The job is not that hard if you have the specialist tools so you can save a bit of money and do it yourself!
    • OK, onto filling. So I don't really have any pics, but will describe the process as best I can. The USDM workshop manual also covers it from TM-285 onwards. First, make sure the drain plug (17mm) is snug. Not too tight yet because it is coming off again. Note it does have a copper washer that you could replace or anneal (heat up with a blow torch) to seal nicely. Remove the fill plug, which has an inhex (I think it was 6mm but didn't check). Then, screw in the fill fitting, making sure it has a suitable o-ring (mine came without but I think it is meant to be supplied). It is important that you only screw it in hand tight. I didn't get a good pic of it, but the fill plug leads to a tube about 70mm long inside the transmission. This sets the factory level for fluid in the trans (above the join line for the pan!) and will take about 3l to fill. You then need to connect your fluid pump to the fitting via a hose, and pump in whatever amount of fluid you removed (maybe 3 litres, in my case 7 litres). If you put in more than 3l, it will spill out when you remove the fitting, so do quickly and with a drain pan underneath. Once you have pumped in the required amount of clean ATF, you start the engine and run it for 3 minutes to let the fluid circulate. Don't run it longer and if possible check the fluid temp is under 40oC (Ecutek shows Auto Trans Fluid temp now, or you could use an infrared temp gun on the bottom of the pan). The manual stresses the bit about fluid temperature because it expands when hot an might result in an underfil. So from here, the factory manual says to do the "spill and fill" again, and I did. That is, put an oil pan under the drain plug and undo it with a 17mm spanner, then watch your expensive fluid fall back out again, you should get about 3 litres.  Then, put the drain plug back in, pump 3 litres back in through the fill plug with the fitting and pump, disconnect the fill fitting and replace the fill plug, start the car and run for another 3 minutes (making sure the temp is still under 40oC). The manual then asks for a 3rd "spill and fill" just like above. I also did that and so had put 13l in by now.  This time they want you to keep the engine running and run the transmission through R and D (I hope the wheels are still off the ground!) for a while, and allow the trans temp to get to 40oC, then engine off. Finally, back under the car and undo the fill plug to let the overfill drain out; it will stop running when fluid is at the top of the levelling tube. According to the factory, that is job done! Post that, I reconnected the fill fitting and pumped in an extra 0.5l. AMS says 1.5l overfill is safe, but I started with less to see how it goes, I will add another 1.0 litres later if I'm still not happy with the hot shifts.
    • OK, so regardless of whether you did Step 1 - Spill Step 2 - Trans pan removal Step 3 - TCM removal we are on to the clean and refill. First, have a good look at the oil pan. While you might see dirty oil and some carbony build up (I did), what you don't want to see is any metal particles on the magnets, or sparkles in the oil (thankfully not). Give it all a good clean, particularly the magnets, and put the new gasket on if you have one (or, just cross your fingers) Replacement of the Valve body (if you removed it) is the "reverse of assembly". Thread the electrical socket back up through the trans case, hold the valve body up and put in the bolts you removed, with the correct lengths in the correct locations Torque for the bolts in 8Nm only so I hope you have that torque wrench handy (it feels really loose). Plug the output speed sensor back in and clip the wiring into the 2 clips, replace the spring clip on the TCM socket and plug it back into the car loom. For the pan, the workshop manual states the following order: Again, the torque is 8Nm only.
×
×
  • Create New...