Silver top low idle

[AlexFourTwenty]

(10-16-2017 06:59 PM)jdm86gtz Wrote:  First up you should check for vacuum leaks between the AFM and the head, spraying carb cleaner can help narrow down suspect areas as it will affect the running RPM.

Did you have to pull the throttle cable tight to bring the idle up? You might have a problem with the ISCV, its located (in stock form) under No.4 throttle body. You might have a dirty internal valve or a wiring issue to the valve control motor, with no throttle cable and the engine up to running temperature the idle should be steady at around 850RPM
Random photo of ISCV from Google:
http://img.photobucket.com/albums/v243/A...CF7352.jpg

Any sign that the AFM was tampered with? The black plastic cover can be forceably removed to access the internal mechanism and then clocked to alter fuel delivery. This isn't really advised though.
Did you find the O2 connector on the wiring loom?
Also do a diagnostic check by shorting pins TE1 and E1 in the diagnosis box (check the lid for pin location) and count the dash engine check light flashes.
Random picture from Google of the ecu error codes:
http://img.photobucket.com/albums/v207/k...Page3a.jpg

What size is the return pipe from the fuel pressure regulator to the fuel tank? OEM size with EFI is 7mm OD pipe.

ill check for vacuum leaks and I’ll see if I can clean the iscv. I must say I did notice that it looks like they tampered with the maf on the square plastic cover. O2 sensor is on but wires are cut off. I’ll check the fuel pressure pipe and I’ll get back to you. About the maf. If they fucked With it how do I check if it’s working correctly.

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I don’t know if that has anything to do with it but after a couple days now I got this problem that it stumbles and jerks on light throttle even when it’s in neutral if I step on the throttle lightly there’s a certain rpm (cluster not functioning) where it just cuts and goes back up cuts and goes back up. Yet when I full throttle it goes away. Only when light throttle is applied will it jerk. Almost as it it was an ignition cut.