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  1. Hey Ya'll - Posting here of course hoping someone can point me to something I haven't thought of yet related to my issue. 1) Basically it's getting very cold at night here in Michigan now and when I go to start the car in the morning it's pretty impossible for it to warm up (erratic idle, stumbling, stalling out) unless I stay out there and keep it alive with the gas pedal. Here's the thing though as soon as the car gets to operating temp, BAM smooth. Idle returns to normal and it's stays on no problem. 2) Car drives around okay, lacking power in 4th and 5th for sure can barely get it up to 70mph on the highway. Really falls flat in 5th. Also surging and bucking a bit on take off until I give it some gas then seems to smooth out. was throwing codes 11 - Crank Angle Sensor 21 - CTS 24 - IAC 31 - TPS 34 - EGR (this was the only code without green or white connectors plugged in) 51 - Neutral Switch Always ON SO FAR I'VE CHANGED CTS (2 used, didn't test resistance using water method) TPS (3 used all seemed in spec) IAC Dizzy Body (that code 11 had me thinking dizzy) MAF Sensor Checked Fuel filter for flow (looks good) Checked for Vacuum leaks (none showing up) It seems to me like it's something related to how the engine reads temp since at least it idles once it's warmed up. Maybe the 2 CTS I tried are all bad. At some point I'm thinking we can't keep swapping 30+ year old parts out for 30+ year old parts and expect spoob to work, but what do ya'll think? Anywhere else I should be looking? Thanks ya'll Oh and HECK WINTER.