89 300TE poor performance during warm-up
Hi. My wagon is doing poorly on warm-up cycle. It lacks all performance between about 15*--80*C. Once the CIS unit shuts off at full warm it runs fine. It isn't the computer, I tried another one in it. I have checked all of the wiring for the temp. switch from switch to CIS to fuel pump relay to EZL, all okay. The switch reads about 290ohm at full warm, I haven't had a chance to check it cold yet.
The mixture is set correctly for warm running, it seems if I set it up rich it will counteract the warm-up problems, but then economy goes way down and such. Not an acceptable fix anyhow. I changed the cold start valve last winter and I assume it's still okay. I checked the other morning and it seemed that it wasn't getting signal at start-up or cold run, I checked the wiring back to the fuel pump relay and also to ground and it's okay.
I'm pretty much stumped and that doesn't happen much. At least it's my car and I don't have a customer biting down my neck for it...
Any help is appreciated,
Alex
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