Aristo swap... Idiling high & limp mode!
08-02-11, 09:47 AM
#1
Aristo swap... Idiling high & limp mode!
I have a 2000 GS300 with the 2JZ VVT-i swap on a single, stinger EMS 4424 and the stock JDM ecu cause I'm auto.( I'm also using USDM MAF) I'm having a issue when the car is cold it idle perfect until it reaches normal operating temps then the RPM's goes to 1800 and stays there. It free revs but when I try to drive it it's in limp mode. I did research on here and the web and some people say it's the IAC valve is stuck or I should be using the aristo MAF. Has anyone encounter this problem and was able to fix it with ease?
08-02-11, 10:28 AM
#3
Your MAF might be throwing things out of wack -- did you check the voltage on that vs the voltage that the jpn maf would need?
intake actuator valve is stuck? -- i'm not sure if this is what its called, but if it was stuck this would cause more of a low idle or fluctuation when the car sits and you get up and go.
intake actuator valve is stuck? -- i'm not sure if this is what its called, but if it was stuck this would cause more of a low idle or fluctuation when the car sits and you get up and go.
08-02-11, 07:04 PM
#10
2jzgttegs, do you have any CEL? Sometimes you have to tweak the TPS sensor and maybe the throttle plate set screw if the previous owner of the engine messed with it. If the throttle goes dead(rev the engine when its idling high at 1800rpm, if the throttle does not operate normally), then you most likely just need to tweak those 2 things.
08-02-11, 07:30 PM
#12
His car is using a standalone.
2jzgttegs, do you have any CEL? Sometimes you have to tweak the TPS sensor and maybe the throttle plate set screw if the previous owner of the engine messed with it. If the throttle goes dead(rev the engine when its idling high at 1800rpm, if the throttle does not operate normally), then you most likely just need to tweak those 2 things.
2jzgttegs, do you have any CEL? Sometimes you have to tweak the TPS sensor and maybe the throttle plate set screw if the previous owner of the engine messed with it. If the throttle goes dead(rev the engine when its idling high at 1800rpm, if the throttle does not operate normally), then you most likely just need to tweak those 2 things.
Jeff I will try messing with the TPS & set screw adjustments
08-03-11, 12:55 AM
#13
His car is using a standalone.
2jzgttegs, do you have any CEL? Sometimes you have to tweak the TPS sensor and maybe the throttle plate set screw if the previous owner of the engine messed with it. If the throttle goes dead(rev the engine when its idling high at 1800rpm, if the throttle does not operate normally), then you most likely just need to tweak those 2 things.
2jzgttegs, do you have any CEL? Sometimes you have to tweak the TPS sensor and maybe the throttle plate set screw if the previous owner of the engine messed with it. If the throttle goes dead(rev the engine when its idling high at 1800rpm, if the throttle does not operate normally), then you most likely just need to tweak those 2 things.