**I have done a very thorough search on the entire forum+Archives before creating this thread, Promise
My car is a 1986 Fiero SE 2.8l V6 110,000 miles Near stock. Cat Deleted w/ no tuning done (Mechanic told me this wouldn't be the problem though)
Since I've had it the car(about a year now) I have had this problem.
When it is warm outside (upwards of 50*F) the car starts right up, idles at 1300RPM and drops down to a comfortable 900RPM after about 20 seconds, just as it should.
However, when it is less than 50*F The idle is very high, between 1900 and 2500RPM and stays that temperature until The engine is at operating temp (Usually about 10 minutes on the freeway)
While the idle is this high, there is a SIGNIFICANT loss in power, I stall out maybe one in 5 times i take off from a light when it's this high. The problem is directly linked to the outside temperature.
No Check Engine Light during this problem EVER. (it does turn on for the lamp check right before you start the engine) and no codes are stored on the ECM.
What I have done:
Checked for EGR tube leaks at the shop -none
checked torque on all intake bolts -good
replaced MAT and MAP sensors with genuine ACDelco parts
Replaced all the vacuum lines with Rodney's stainless steel ones (After I did this, my cruise control started working again)
Checked for vacuum leaks with new Vacuum tubes -none
Replaced IAC valve and allowed the ECM to calibrate
replaced O2 sensor with ACDelco Part
Replaced Spark plugs, distributor cap and rotor and will be replacing wires this weekend.
My dad and I will be replacing the Distributer O-Ring this weekend, and we will be double checking the timing before
When I have the air intake hose off, I can put my palm over the throttle body opening and the engine will get sluggish for 2 seconds and then stall, I think this is normal.
I tested the TPS with an Ohm meter, but haven't replaced it yet.
This wouldn't bother me so much except every time i start from a stop, I feel like I am wearing out my clutch for no good reason b/c the idle is so high.
On an unrelated (I think) note, I have been having some cold weather electrical problems, but I think its because snow finds its way into the battery area and causes something to ground because it doesn't happen when there isn't snow back there.
I'm going to try and film a short video explaining this tomorrow
Again, Thanks in advance!
[Edit to add Cat Delete]
[This message has been edited by jschmidt95 (edited 12-05-2014).]