Jump to content
SAU Community

Recommended Posts

Idling then dies

IDLING ISSUES!!
Hey guys, I have a 1994 r33 gts25t auto (rb25det). On cold start I have to use the throttle to get it going and use the throttle to warm it up. When it's warm 5 mins later I release the throttle for it to idle and it slowly dies. Start it back up with no throttle and she runs mint for 30 seconds then it dies again. Within that 30 seconds I can touch the throttle and it will idle until 30 seconds is up then again....it dies. Try to blip the throttle after that 30 seconds and it dies again. I have...

Resoldered the afm and fitted another working afm.
Replaced aac valve.
Set tps to .45V.
Fitted another relay for a constant 12V to the fuel pump.
Opened up cold start valve and it was clean as.
Vacuum tested the intake and no leaks occurred.

Removed and cleaned throttle body right up.
Checked ecu for codes, nothing appeared.
Replaced temp sensor.
BCPR6ES gapped to .8.
Cleaned cam angle sensor.
Checked ecu for any burn or corroded connections inside.

 

Anyone please help me if they have had this issue, I've never heard of it happening.

Link to comment
https://www.sau.com.au/forums/topic/471382-idling-then-dies/
Share on other sites

I pressurized the inlet system for any vacuum leaks and there aren't any, visually looked at all the lines also.

 

While driving I have to double foot it so it won't die at lower speeds and stopping. (Just the same idling issue) I feel like something is drawing the current iswell because it won't start after a couple days of not starting. It slow cranks when that happens but then some times it's starts up ? it is charging, I checked with a multi meter. Maybe need to do another test of some sort? 

Pressure test the fuel system. FPRs rarely fail but good to check. have you replaced the fuel filter in the engine bay? Long shot if you can swap out the ecu with someone just to eliminate that as a problem.

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

    • Update: I got the magnet out. I bought 3 different flexible magnetic reach tools, but none of them worked. The magnet on the tip was all less than 2lbs of force, so i had to buy a special cylindrical magnet that had a pull force of 9lbs.  The magnet finally came in the mail yesterday, so i got under the car to get to work. The super strong magnet isn't that long, so i only have about 1 finger pinch lengths to hold it. I was so scared when i was going in the hole, that the 9lb magnet would just fly away inside the oil pan never to be seen again, but i had my butt cheeks clenched and finger gripped on that thing so tight, i managed to get it to suck the other magnet out.  It was a victory for me last night.         
    • Yep, pretty much what you said is a good summary. The aftermarket thing just attached to the rim, then has two lines out to valve stems, one to inner wheel, one to outer wheel. Some of the systems even start to air up as you head towards highway speed. IE, you're in the logging tracks, then as speeds increase it knows you're on tarmac and airs up so the driver doesn't even have to remember. I bet the ones that need driver intervention to air up end up seeing a lot more tyre wear from "forest pressures" in use on the highway!
    • Yes, but you need to do these type certifications for tuning parts. That is the absurd part here. Meaning tuning parts are very costly (generally speaking) as well as the technical test documentation for say a turbo swap with more power. It just makes modifying everything crazy expensive and complicated. That bracket has been lost in translation many years ago I assume, it was not there.
    • Hahaha, yeah.... not what you'd call a tamper-proof design.... but yes, with the truck setup, the lines are always connected, but typically they sit just inside the plane of the rear metal mudguards, so if you clear the guards you clear the lines as well. Not rogue 4WD tracks with tree branches and bushes everywhere, ready to hook-up an air hose. You can do it externally like a mod, but dedicated setups air-pressurize the undriven hubs, and on driven axles you can do the same thing, or pressurize the axles (lots of designs out there for this idea)... https://www.trtaustralia.com.au/traction-air-cti-system/  for example.... ..the trouble I've got here... wrt the bimmer ad... is the last bit...they don't want to show it spinning, do they.... give all the illusion that things are moving...but no...and what the hell tyre profile is that?...25??? ...far kernel, rims would be dead inside 10klms on most roads around here.... 😃
    • You're just describing how type certification works. Personally I would be shocked to discover that catalytic converter is not in the stock mounting position. Is there a bracket on the transfer case holding the catalytic converter and front pipe together? If so, it should be in stock position. 
×
×
  • Create New...