Hey all, First ever post but have referenced multiple threads (thanks you all!) many a time since purchasing Pierro about a two months ago; my 84' base model Fiero, with 50k original miles, clean and pretty as a whistle.
Just as expected, a couple of the typical Fiero problems have come my way; headlights dont flippy(we'll get there), shifter cables replaced after heat got the best of 'em, and the basic tune up and maintenance as to expect with any 30 year old car.
But just recently I ran into (yet another) classic 30 year old fiero problem.
As of about a week ago the idle has been pretty sporadic; between 2500 and 3k (:/) then when is expected to drop as engine warms, jumps up and around 3, in gear avg 2500.
After exploring the interwebs and learning all about the ECM, IAC's, MAP's, and DVD's; I tinkered some more:
Checked all fuel lines and vacuum hoses and cant seem to find any cracks or leaks.
Did notice a couple random untightened screws in the throttle body and a diaphragm directly behind it was barely hanging on (not sure what it is)
Cleaned the IAC, checked all wires and connections and put it all back together.
I started the car w/ the air cleaner off to plug the hole and see if faulty IAC (http://www.fiero.nl/forum/A...219-2-075478.html#p6)
She idled at a pretty 1200rpm
I then noticed the fuel pump continuously spraying fuel into the carb (?)
Put the air filter back on and car idled at a pretty 1200 and warmed up and jumped up to about 2k
Now, she starts up and holds a decent 12-15 but as soon as i start driving, she cranks back up to a solid 25k, idles or neutral. and drops when in gear.
As this is the first engine I've gotten fully hands on with (im 21) i'm a little lost as to what's actually going on, should the fuel pump continuously dump fuel into the carb (my brain thinks not) and does that mean I have a vacuum issue since it jumped back up with the air cleaner re-installed? Really enjoyed the low idle but i've read that 2k is to be expected?
Would love some feedback!