Rb20 Spools As Though Brakes Are Held On

[DVS JEZ]

Rolls is right about it pulling timing. I will investigate it now

[Rolls]

you find the map I am talking about?

[ae86 boy]

hey guys, the problem went away for a few drives now its back, not as bad as before but its still there. cleaned the afm with contact cleaner so pretty sure thats fine. My question now is (assuming it is the ecu), if i take my car to get a tune up (nisstune ecu) will this hopfully rectify the problem. Do tuners usually have spare temp sensors etc on hand if it is damaged, or should i be looking at coming with an arsonal of spares.

[GTSBoy]

You can just test your temp sensor yourself. Get the temperature vs. resistance characteristic (google) and put it in a saucepan with a thermometer and check its resistance as you warm the water up (slowly).

[DVS JEZ]

you find the map I am talking about?

Sorry been flat out. But i did talk to Matt he was gonna ask Pete for me

[Moodles2]

In my opinion it's a bad idea to rock up to a tuner with a car that has problems, a tune won't magically fix it.

[ae86 boy]

In my opinion it's a bad idea to rock up to a tuner with a car that has problems, a tune won't magically fix it.

exactly my thought

guess ill start troublshooting, starting with the temp sensor, makes it hard when its perfect one day and playing up the next.

[Manuel Kasko]

Ae86 read a few posts above and you will see it seems to be a common problem with the ECU

DVS is going to troubleshoot it and see what it is when he has time or hears back from Nistune

[DVS JEZ]

Ok finally got some spare time to have a look at the NIStune files for warm up timing, i found that 7+ degree's of timing is taken out during warmup up till around 3000rpm then returns to normal, So from now on everycar i do will have this timing put back in.

Kasko when we meet up in June at Eastern Creek i will fix it up for you

[Manuel Kasko]

Ok finally got some spare time to have a look at the NIStune files for warm up timing, i found that 7+ degree's of timing is taken out during warmup up till around 3000rpm then returns to normal, So from now on everycar i do will have this timing put back in.

Kasko when we meet up in June at Eastern Creek i will fix it up for you

Sounds great thanks mate!

Thats exactly where it frees up and starts cruising.

Amazing how different it feels with 7 degrees timing

[Rolls]

I think it was pulling far far more than 7 degrees, the map I saw had a dip from 20 down to 5 and when I looked in ecu talk it was pulling the maximum timing possible.

It doesn't do it this bad stock though, so I suspect when you start changing injectors/afms etc something else might kick in as well, unsure what.

[ae86 boy]

Hey guys sorry about this, just making sure im following correctly. So its due to my ecu taking timing out when in warm up mode below 3000rpm. But because my car does this sometimes even when hot then this would suggest a temp sensor is possibly damaged telling the ecu the cars cold when really its warmed up, at random times at that?

[GTScotT]

Ok finally got some spare time to have a look at the NIStune files for warm up timing, i found that 7+ degree's of timing is taken out during warmup up till around 3000rpm then returns to normal, So from now on everycar i do will have this timing put back in.

Kasko when we meet up in June at Eastern Creek i will fix it up for you

No wonder mine started doing it as soon as i put the smaller turbo on. You bad boy you.

[DVS JEZ]

No wonder mine started doing it as soon as i put the smaller turbo on. You bad boy you.

Hahaha blame the tuner

[Rolls]

Hey guys sorry about this, just making sure im following correctly. So its due to my ecu taking timing out when in warm up mode below 3000rpm. But because my car does this sometimes even when hot then this would suggest a temp sensor is possibly damaged telling the ecu the cars cold when really its warmed up, at random times at that?

I am of the opinion there are two maps, cold start and sort of cold start as mine still pulls timing when I drive the car about 5-6 hours ago, eg in the morning it is fine (stone cold) if I leave work early it does it though the warm start map doesn't pull anywhere near as much timing and doesn't really bother me.

The other option is yes your temp sender is stuffed, is your fuel economy ruined? Plug in a consult cable and check the fault codes (not 100% reliable), or simply just check the output when cold and when hot with a multimeter, it should vary.

Edited May 17, 2012 by Rolls

[DVS JEZ]

There is only 1 map as such except for knock maps, and the temp corrections and warmup timing tables are the pullers

[Rolls]

table is what I meant not map.

There is a cold start and warm start timing map, these are the two that do the retarding. The warm start one is much less aggressive, I'd just duplicate it in the cold start map and then take a few degrees out of the warm start one.

Lots of other handy tables though, coolant temp ignition and fuel tables for when the car gets hot, I put big numbers 110c degrees cell and a bit in the 100 so if it overheats in summer I don't blow it up.

Edited May 18, 2012 by Rolls

[DVS JEZ]

Also different ecu's have different tables.

[ae86 boy]

took the car for a drive tonight. noticed the temp guage went up to where it normal goes (did take about 10mins to get there - way longer then it should be) and down then stayed only about 1/3 way up and wouldnt get up to the normal place where it sits. also when it was down the car was boggy and when it was up (briefly) the car ran alot better. obviously after 20mins driving my car had warmed up. my question is does the temp sender also tell the thermostat to open up. or is it my thermostat is not working correctly therefor the sensor telling the ecu if the cars at operation temp yet is getting tricked.

[DVS JEZ]

Thermostat doesnt use any electrical signal.

Have u checked the coolant level and condition? Can u get a consult to check temp into ecu