RPM fluctuates bet. 1200 and 2000

suprashy

New Member
Jun 21, 2005
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Nassau County, NY
Supras,

car idles fine, but when applying gas (under no load), as soon as she hits 1800-2000 rpms, she fluctuates bet. there and 1200 continuously. Go beyond/below that range, and shes' fine. While driving, she's ok, with the occasional hiccup in that rpm frame.

I did reinstall TPS, ISC, CPS, and a number of items as I upgraded fuel and injectors, and turbo. Also calibrated the TPS to spec. I have no codes and timing is correct.

She only boosts around 3-4 psi too, but I think that problem is separate.

I have the VPC, Fcon and GCC. All knobs are at 12 o clock. Didn't have these problems before with the electronics. Will ck. TPS. Any other ideas? Thanks!

Suprashy


HKS Sport Turbo
Delphi 680's
Walbro