R32 dodgy start up and cold running

[Bazelinez]

Hey guys,

My skyline (GTs-t) has done this since I got it. When you start it up for the first time in the morning it sorta struggles to idle on its own, if you give it a rev, the stepper motor kicks in and its fine from there. Then when your driving, under medium throttle it surges a fair bit. If you floor it its fine, but under some throttle pressure it stumbles and surges. Once its warm, its fine.

The fuel pump isn't audible from inside the car so I'm guessing its the stocker so that could be the issue but I'd like some ideas to make sure.

thanks fellas!

[aKTiVE]

do you run aftermarket ecu?

[Oosh]

Hey guys,

My skyline (GTs-t) has done this since I got it. When you start it up for the first time in the morning it sorta struggles to idle on its own, if you give it a rev, the stepper motor kicks in and its fine from there. Then when your driving, under medium throttle it surges a fair bit. If you floor it its fine, but under some throttle pressure it stumbles and surges. Once its warm, its fine.

The fuel pump isn't audible from inside the car so I'm guessing its the stocker so that could be the issue but I'd like some ideas to make sure.

thanks fellas!

the most common culprit for this sort of thing with R32's is coil packs. there's a lot of thread regard these stalling/start up issue so search around...

[Bazelinez]

its stock ECU, only exhaust and filter......

yeah I replaced one of the coil packs soon after it landed cause it was a dud..... Kinda a lucky dip with second hand coils though. It runs fine, just after start up its dodgy....

anyone know how much new coilpacks are? genuine or splitfire?

anyone think it could be something else?

[Mr GTS4]

do you let it warm up alittle before driving it? if not thats probably the problem. a let mine idle for about 4-5 mins then drive it slow for another 5mins then its ok after that.

[daler32]

mine does the same thing even if i let it idle for a bit ever since i got it

as far as i know stock ecu wheres it located soi can have a look see?? just got a pod and a bigger exhaust that came with it n the boost been played with before i got it but dunno wat its runnin at now

[steve_R32]

Mine has done this since day 1 of driving it (been on the road for over 2 yrs now). Once the temp guage gets to half way, shes fine, just warm it up if it pisses you off, if not don't thrash it till its warm. I get in mine cold, drive it straight away, 2-3 mins max, its warmed up. You can feel it hit that certain point once the temp guage is halfway, it 'clears up' and feels normal. Done it since I first got it on the road. Quite common apparently.

Don't forget, these cars are getting old now, mines a late '93, 12 yrs old now!

Steve

[boj01]

It's most likely to be the cold start programme built into the standard RB20 ECU. My car also has these characteristics, and its 23 years old!

FYI, the ECU in an R32 is located in the passengers side kick panel.

[daler32]

thanks boj01 and i should realise just by lookin that it aint factory yeah??

[Bazelinez]

thanks a lot guys! yeah it disappears fully when warm. I seem to remember my old toyota doing this too now that I think about it.... good don't have to fork for a new fuel pump!!

cheers fellas!

[gts4diehard]

hi, check the plugs for the temp, one for the gauge and one for the computer, put the plugs on two or three times just to make sure the contacts are good, the computer prob thinks the temp is diff to what it really is. These sensors/plugs are pretty old by now and more than likely wont be operating 100%. this is where i would start first. The plugs are located by thermostat/ top radiator hose on block.

try starting it without using accelearator, if it wont start then open bonnet and wiggle plugs/ remove & replace plugs and try starting again.

Stephen

[Bazelinez]

will try that too mate, might give the air flow metre a clean as well..... its an 89 so I guess its probably due.

[NYL83R]

My r33 used to run rough under load, around 5000rpm, and it ended up being hair line cracks in the front of the coil packs. after wrapping them in electrical tape, i havent had any problems with them. This is a common problem with r33's

[natho]

just because an r32 is 12 years old is no reason for it not to work properly. if its running rough or not starting properly then something somewhere is wrong...

[Bazelinez]

well actually dude, it is. When cars get old they have more problems. I would have thought that was obvious......the second part of your post contradicts the first.

I fixed it anyway, the air flow metre was just dirty....

[natho]

sorry i should have worded it better

its not a reason to accept that its not doing what it should. eg i have friends and go well the my car overheats (or anything really) but it doesnt matter coz its old. my thinking is ok it overheats so replace the thermo fan thats not working - dont just use the 'its old' as an excuse to not do anything.

[Bazelinez]

oh yeah true that, some people are just slack. My old corolla ran like a (oily) dream, 22 years old sorry to jump down your throat....

maybe when I'm rich and famous i'll fork out for 6 new coil packs might help as well.