Idle issues

[waffles]

Hello all! So I'm done with my 3.2 swap and I have about 2000 miles on it. It drives great when it's cold out, but when I get into traffic and the engine starts to heat soak it gets sketchy. When I come to a stop, I push the clutch in and the engine drops to about 500 rpm, the oil light comes on and it bounces back to life. Any ideas? IAC?

 

[eacyde]

My 3.0 used to do the same thing. Until I discovered that the VSS was unplugged

I have read that the dropping oil pressure could be a possible symptom of failing rod bearings.

Good Luck

 

[waffles]

What is the VSS? I just put new bearings in and the clearances were good, so I'm not really suspecting that.

 

[K-Dawg]

Vehicle Speed Sensor. The computer uses it to tell when the car is moving. It's where the speedometer cable attaches to the transaxle.

I was thinking more along the lines of a vacuum leak. Yes, IAC does control the idle so it could be a culprit.

 

[waffles]

What does the vacuum line "B/d" do?(the one that connects to the firewall).

 

[eacyde]

What does the vacuum line "B/d" do?(the one that connects to the firewall).

Nothing on an MTX. It should be capped off