'86 300zx turbo Cold Start problems

[blueline]

I have a '86 300zx turbo that has a couple problems. First off, its hard to start in cold weather. I check ECU codes, and found that the MAFS is bad, Cylinder head temp. sensor is bad, and the fuel temp sensor. If im lucky it would start after 10-15 cranks. (engine rotates but no fire). The other day I was messing around with it and unplugged the CHTS from the harness, and to my surprise it started right up. Secondly, when it does start, and after a proper warm up I cant hear any turbo spool, sounds like a reg. v6??? also, there's no boost till around 4,500 RPM.

Any ideas?

[nuinqua]

Maybe u should try testing or replacing those sensors u just named.

[evildky]

I'd bet you aren't tunnning on all6, and yeah if you got ythe codes, replace the aprts

[minnesotazcar]

Or at least check the sensors i would recomend going a step further and get the sensor specs if you could. Hate for you to spend all that money on new sensors just to find out you had a loose connection or a short somewhere