87 caravelle tbi. coolant sensor code went off the other week and now it idles at about 2000 rpms and when I blip the throttle it'll almost redline before slowly going back down, sometimes I gotta shut it off before it'll even go down.
I replaced the coolant temp sensor which helped.... sometimes. other codes I get are throttle position sensor not working, throttle temp sensor and speed sensor relay shorted or somethin. I've had these past 3 codes since I've had it and its never gave me a fuss like now.
I've also noticed when I give it gas real quick the rpms shoot way up even with the tb blades closed but it sounds like air is being sucked in anyways. I tried to find an air leak but couldn't find any. if I give it gas smoothly without blipping it it'll go all the way to redline without and issue.
any ideas where to look? I'm posing with my phone, hope this all makes some sense! thanks