Jump to content
SAU Community

Recommended Posts

My car is having this weird problem, when I start the car in the moring (or cold) it runs like a dream. But if i drive it for a while, and then stop and leave it for a while (an hour or more), and start it again, it runs like shit. It won't idle, it keeps almost stalling then coming back to life. And when I drive it it will barly rev, and it bucks and carries on, the only way I can get it to go is to pump the throttle. It's hard to explain, but it's a pain in the arse.

The ECU is a remapped stocker (no 180k limiter, 8500rpm rev limiter, spark cut instead of fuel cut....) i'm thinking that the ECU dosn't like warm starts, but i'm realy not sure.

Thanks

Link to comment
https://www.sau.com.au/forums/topic/82461-weird-problem/
Share on other sites

hi sav.....ive had a verysimilar problem to this.....now im could be wrong... be but it could be a couple of things.....either u have some faulty coils and basiacally after uve been driving for a while it runs fine but then when u stop for a while the engine is still v.hot so the coils get heat soaked because the car isnt driving and having air pushed through the front....if that makes sense so try taping up ur coils for a start

or go get a leak down test done and see if u r having any leakage (sounds like it maybe)...i only say this cause i was having a similar problem and after checking it out further found that engine was not in great nic and it was time for a rebuild after similar symptoms 2 u...(not 2 scare u)

hope u dont need a rebuild too

good luck

Link to comment
https://www.sau.com.au/forums/topic/82461-weird-problem/#findComment-1495413
Share on other sites

The car is getting looked at on Tuesday, I have had problems with the AFM's in the past (a clean with carbie cleaner fixed that). If the AFM's need to be replaced will Nismo AFM's plug straight in without a remap. Just thinking for future mods.

Link to comment
https://www.sau.com.au/forums/topic/82461-weird-problem/#findComment-1504322
Share on other sites

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

    • This car has run before on this z32 ecu can get the part number for you, I have tried with no AFM it didn’t change anything, I compression tested today 140-150 across all 6 cylinders, also set fuel pressure to 43psi. The only weird thing was cylinder 1 plug was black and fouled other 5 cylinders were just wet with fuel. Spun cas by hand and confirmed injectors are clicking 
    • Since you came here to ask for help, have you thought about answering our questions, that might help us lead you to why it was skipping, or have you given up on getting advice?
    • A 1.5 way is a 2 way. It is just a 2 way with a less aggressive ramp on overrun.
    • The ABS and/or TCS being missing/broken will not cause the engine to misbehave. It just casues CEL to come on and annoy you. The CEL is useless if it is always on, so you have to do the things you have to do to get rid of it, so it can be useful. Being a Stag ECU, then yes, it will not expect TCS to be present. But it will expect ABS to be present and working. You will need to either make the ABS CU talk to the ECU (don't ask me what that will take on an NA R34), and make sure the hardware is working....or, you just need to blank it out in Nistune. Do not persist with the stock ECU. You will just have problems. Gte it Nistuned. Start from there. DO YOU HAVE A BOOST SENSOR? The ECU's boost sensor that it. It is connected to the loom at the rear of the coil cover. Usually rides on the firewall on an R34, but is usually bolted down to a bracket along with all the other crap at the back of the coil cover when a Neo is dropped into another car. If you do not have it, the ECU will shit the bed. So, do you have one?
    • So sadly the fuel pump etc was not it. The pump and filter is new and it is still cutting around 4000 rpm. A read something about ABS/TCS (engine is from stagea and ECU too so no TCS) and i dont know for 100% that my car has ABS. It has ABS "cube" in engine bay but i dont think it works(or at least from my braking experience). Can be something like that?  I will be driving the car next week to Nistune tuner to properly see what is wrong...  
×
×
  • Create New...