engine warm up, rough running till warm Options

[simonr]

I have a 1976 stock FI 2.0 with 128,000 miles on her. ive had the car 2 months and have gone thru her pretty well because im a stckler for knowing where im at with my Porsches. I have replaced all vacuum hoses points, plugs , adjusted valves and timing is dead on. I live in Indiana so its not been cold yet. My car runs fine after she warms up but does not run well at all until then . She idles but going through the gears she surges pops and farts for about 5 to ten minutes of run time then she runs great. are the 914's usually this cold blooded. I dread to think what it will be like when it starts getting chilly out. Am I expecting too much? I just feel im missing something. Thanks for all imput

[simonr]

I replaced the CHT sensor with the stock unit . Maybe its the wrong one . I got it from AA it was the only one they listed. Does the AAR open wider in the cold as minr is half way the smaller slot and half the wide open slot . Im not convinced that the AAR is fuctioning properly . My CHT sensor had an metal extention piece on it that the sensor screwd into. the peice was rusty and nasty so I put the sensor in without it . No diagrams showed that it even existed. Maybe I should put it back on perhaps it takes longer to warm the sensor as it must warm up first. the engine was rough upon starting before I changed the CHT sensor . What should the AAR slide valve look like when cold?