What did you do to your P2 Volvo today?

[Krons]

05 XC90 got new front brake pads and rotors today, in my haste I failed a thorough inspection previously and rear brakes are even worse off. Parking brake is non-functional, attempted removing passenger rear disc for a look with no joy-seized on tight and didn’t want to make things worse. I figure the whole mechanism is full of rust.

AC is running hot again so will send to my Indy to find the leak and refresh the rear brakes and fix the parking brake. Hoping the next bill isn’t $1200.

[dikidera]

As I fiddled with my adaptations I managed to come to very specific ones that made my shifts at least 20-30% better, smoother. I believe they affect the SLT solenoid. If my understanding is correct. In fact, with them and very little throttle, I literally had a 1-2 2-3 shift which I did not feel at all.

However we will see if this effect is short lived or more permanent and whether it has any side effects.

A few other experiments with a different group(for downshifts) of adaptations showed an improvement in downshift with kickdown. These should affect SLS.

[dikidera]

In my search for in-line filters I came across a few that look suspiciously like Magnefine so I have to ask, is Magnefine selling rebranded filters?

Mapco 29990
JP GROUP 9945150200

They look suspiciously like Magnefine, have a magnet. Hell the JP Groups ones literally have magnefine images slapped on them. And if you google JP GROUP 9945150200 it's literally Magnefine, or so it looks like.

Are these good enough to use? Since I can order them locally I think and thus will not wait weeks for them. For the AW55 transmission.

[hiroku]

My new-to-me V70 T5 scared the crap out of me today. Took it for its first sprited drive since I bought it, and the coolant level warning came on and off a couple of times. Pulled over when it was safe to do so and there was a mile-long trail of water leading directly to my car. Opened the hood fearing the worst.

Fortunately, it was just condensation from the AC. Coolant level is still sitting pretty right at the MAX level.

Drove home carefully, and now the "pull over and check coolant level" message is on permanently.

Did some quick checking on the sensor with a multimeter and a makeshift paperclip shunt, and it seems that the light stays on when the circuit is open, and turns off when it's closed. Something must be preventing the sensor from closing its own circuit. I've read there's some sort of magnetic float within the expansion tank. Either there's an internal fault with the sensor, or the float is stuck somewhere, or it can't accurately read its position because the coolant is still a bit dirty with oil(previous owner flushed it after the oil cooler went bad, but didn't do a very good job).

I ordered a new sensor and expansion tank (was gonna replace it anyway), but it will take over a week to arrive. Pretty scared to drive the car with a faulty sensor, in case some radiator hose goes bust. Would take massive amounts of bad luck, but I always feel that Murphy's Law follows me around...

Anything I can do to maybe bring the sensor back to life temporarily? I tried shaking/whacking the reservoir to release a stuck float, and cleaned the connectors with contact spray, but the light is still on.

[BlackBart]

Good timing - I was just about to post this useful list of cooling components for P2's I saw on IPD this morning...

https://www.ipdusa.com/products/21614/C ... crumbs=998

Not sure how many of these I have actually changed. It's been onezy-twozy, here and there, not a complete system.

[jonesg]

My new-to-me V70 T5 scared the crap out of me today. Took it for its first sprited drive since I bought it, and the coolant level warning came on and off a couple of times. Pulled over when it was safe to do so and there was a mile-long trail of water leading directly to my car. Opened the hood fearing the worst.

Fortunately, it was just condensation from the AC. Coolant level is still sitting pretty right at the MAX level.

recommend an elm 327 for $15 and connect to your smart phone, i leave mine plugged in 24/7.
you can then accurately monitor coolant temp as you drive.

[hiroku]

Yeah I was definitely considering buying some cheap OBD2 Android reader to leave in the car for emergencies, since I can't drive around with DICE and a VIDA laptop all the time.
I was wondering if the ELM would work, since I've witnessed many cars where it simply wouldn't read anything. Happy to know it seems to work on these V70s.

As for the coolant temps, my main concern is what does the coolant temperature sensor actually read in the event that there's a complete loss of coolant? I've read many reports, from the temperature needle going up sharply, to going down (because the sensor is now measuring air temperature rather than water), to just not moving at all until it's too late. The latter is the worst possible scenario, as you wouldn't have any warning that something is wrong unless there was a huge cloud of steam billowing out from under the hood.

Either way I have had to drive a few more miles and I'm happy to see that the coolant level seems unchanged at the MAX mark so far, so I think I'll be fine for a couple of weeks until I get the new sensor. The majority of cars I've seen doesn't even have this sensor, and they don't go around overheating every day

[dikidera]

Yeah I was definitely considering buying some cheap OBD2 Android reader to leave in the car for emergencies, since I can't drive around with DICE and a VIDA laptop all the time.
I was wondering if the ELM would work, since I've witnessed many cars where it simply wouldn't read anything. Happy to know it seems to work on these V70s.

As for the coolant temps, my main concern is what does the coolant temperature sensor actually read in the event that there's a complete loss of coolant? I've read many reports, from the temperature needle going up sharply, to going down (because the sensor is now measuring air temperature rather than water), to just not moving at all until it's too late. The latter is the worst possible scenario, as you wouldn't have any warning that something is wrong unless there was a huge cloud of steam billowing out from under the hood.

Either way I have had to drive a few more miles and I'm happy to see that the coolant level seems unchanged at the MAX mark so far, so I think I'll be fine for a couple of weeks until I get the new sensor. The majority of cars I've seen doesn't even have this sensor, and they don't go around overheating every day

Get the real ELM stuff not the clone. This way you can send it custom commands as if it's a VIDA.

[jonesg]

Yeah I was definitely considering buying some cheap OBD2 Android reader to leave in the car for emergencies, since I can't drive around with DICE and a VIDA laptop all the time.
I was wondering if the ELM would work, since I've witnessed many cars where it simply wouldn't read anything. Happy to know it seems to work on these V70s.

As for the coolant temps, my main concern is what does the coolant temperature sensor actually read in the event that there's a complete loss of coolant? I've read many reports, from the temperature needle going up sharply, to going down (because the sensor is now measuring air temperature rather than water), to just not moving at all until it's too late. The latter is the worst possible scenario, as you wouldn't have any warning that something is wrong unless there was a huge cloud of steam billowing out from under the hood.

Either way I have had to drive a few more miles and I'm happy to see that the coolant level seems unchanged at the MAX mark so far, so I think I'll be fine for a couple of weeks until I get the new sensor. The majority of cars I've seen doesn't even have this sensor, and they don't go around overheating every day

feel the top hose , the one from the thermostat, if its hot the thermostat has opened.
normal run temp is around 185.
above 229 the elec fans turn on until it drops to 180ish. The fan is switch on by the temp sensor next to thermostat.

AC also automatically turns the elec engine fan on when ac is running. it senses the refrigerant pressure sensor.

cooling fan failure will also peg the needle if idling for 10 minutes.

[BlackBart]

It’s light bulb day, replace them all in new pairs so there’s not any voltage warning weirdness.

Y’know when you have forums, and you can ask any stupid question and forget how to look things up, but you think to maybe check the owners manual, and it’s a Volvo with actual technical info?…..