All Things Chev

[FNQGU]

Thanks, so that would apply when at idle as well? The engine sounds the same at idle, so I am still suspecting something is out of calibration. At idle this morning the boost gauge read 2.2Psi, which was different from yesterday. Strangely, with the engine off, and the ignition on, I am getting a reading of 0.7 Psi! Earth issue perhaps?

[nissannewby]

Yes at idle as well there will be a difference due to torque converter and you now have to pump oil through the tranny being an auto.

Making boost early isnt bad as it makes for a better torque rise which equates to nicer driveability. With the right mods we can have nearly 1psi on a td42 at idle.

If its reading with nothing on then something is slightly a miss.

[FNQGU]

Ok, good one. Thanks for the info. If only these engines would rev right out to 5000rpm :-)...

The tweaks so far to the TCU settings seem to have improved things a bit. Just need another excuse for a good long run to get a better feel for it, then tweak it again.

Might fit up a thermo fan to the cooler next, before I think about re-positioning it. Should be a whole lot easier and might save some stuffing around too.

[nissannewby]

The auto temps arent to bad, in saying that you dont really want it to be coming over 100. Tc lockup can play a part in this as well so when off road and going down hill you can have it locked and explains your low temps when cruising with the tc locked as well as the extra air flow at cruise speed.

If you fit a fan it will be better to have it draw through not push.

[FNQGU]

That's handy, because drawing through is where I have just enough room I think.

Are some thermo fan's better than others? I'll have a look around tomorrow for something to fit a 28cm square cooler.

[nissannewby]

That's handy, because drawing through is where I have just enough room I think.

Are some thermo fan's better than others? I'll have a look around tomorrow for something to fit a 28cm square cooler.

Yes some thermos are better than others and will be worth spending the extra coin. The fan will only be useful around 40km/h and under as the air moving through from that speed and up is more than any electric fan can push.

[FNQGU]

Ok, I moved one of the two ATF coolers and temps are now much better. Haven't fitted a thermofan as yet. Around town, highway, hills, and some easy 4wdriving hasn't seen temps go over 85*C, so I am fairly pleased with that. This includes the same sort of driving that previously saw temps go to 103 degrees. I am yet to do anything like sand or heavy 4wdriving though, but am confident things are much better than they were.

I've now been fiddling around with my settings on the Compushift for a while and starting to get a feel for it. So far I have only been trying to find a happy compromise for when the TCC locks up at Highway speeds and I think I am just about there.

I still haven't used it in manual mode yet or for any serious off-roading but that is my plan for the coming weekend.

I'm also unsure what my low-range transfer case ratios are, now that I have fitted 43% reduction gears, so I don't know if my entry in the compushift is correct in the low-range settings. If anyone can advise me in this regard I would appreciate it.

[johno1938]

yer my brothers got a new chev pickup v8 diesel now they are made by issuzu there great
had a few prob. with earlier ones

[Gecko17]

Ok, I moved one of the two ATF coolers and temps are now much better. Haven't fitted a thermofan as yet. Around town, highway, hills, and some easy 4wdriving hasn't seen temps go over 85*C, so I am fairly pleased with that. This includes the same sort of driving that previously saw temps go to 103 degrees. I am yet to do anything like sand or heavy 4wdriving though, but am confident things are much better than they were.

I've now been fiddling around with my settings on the Compushift for a while and starting to get a feel for it. So far I have only been trying to find a happy compromise for when the TCC locks up at Highway speeds and I think I am just about there.

I still haven't used it in manual mode yet or for any serious off-roading but that is my plan for the coming weekend.

I'm also unsure what my low-range transfer case ratios are, now that I have fitted 43% reduction gears, so I don't know if my entry in the compushift is correct in the low-range settings. If anyone can advise me in this regard I would appreciate it.

I have been having a few (minor) issues with my Compushift II controller and have been meaning to take it in to a Transmission place here in Perth. Withe the idle, I have been told that one of the issues is that there is only one sensor placed on one bank of pistons, where there should be one sensor on each bank. One I get mine sorted, I will post what was changed.

[FNQGU]

Took the truck for a run up the Creb track on Sunday, just after a spot of rain. The Auto worked a treat and I am really pleased with it, however temps again got a bit hot (96 Celcius) during the slow and long hill climbs where it was working hard. I wasn't super concerned about that sort of temp, but figure that I will fit a thermo fan now and try to get it down a bit lower.

Also planning to install an Engine Saver low coolant alarm plus a Diesel Care pre-filter, so might as well do it all at once.