jrquint
New Member
- Joined
- Mar 11, 2010
- Messages
- 6
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1990
- Make / Model
- Ford
- Engine Size
- 2.9L
- Transmission
- Manual
So my warm engine hesitation /misfire isn't posting codes 21 and 24 anymore. Must have been just an improper test. Now i'm posting code 41 HEGO reads too lean.
First thought O2 sensor as the problems seem to start when going into closed-loop. The previous owner said it was recently replaced tho.
BUUUT... i found 2 unconnected vacuum hoses! One is a solid one coming off the idle air side of the manifold(not the one going to the MAP). It leads over the alternator to near the air box.. and disappears.
The other is a red striped hose coming off the air cleaner diverter i believe.
It doesn't look like these two just mate together tho. Tried it anyway and had NO power and barely idled at any temp.
I found the chart on the truck for vacuum routing, looks like the mate up to AIR CLR BI-MET (bi metallic valve?). Any idea were this is exactly and what it looks like? I cant find anything else with open vacuum fittings near the air box.
Also, I wanted to test the ACT sensor, but I can't find that either... haynes says it should be on the air cleaner or intake... dont see anything with wires going to it.
BTW this is on a '90 ranger 2.9L 4x4
First thought O2 sensor as the problems seem to start when going into closed-loop. The previous owner said it was recently replaced tho.
BUUUT... i found 2 unconnected vacuum hoses! One is a solid one coming off the idle air side of the manifold(not the one going to the MAP). It leads over the alternator to near the air box.. and disappears.
The other is a red striped hose coming off the air cleaner diverter i believe.
It doesn't look like these two just mate together tho. Tried it anyway and had NO power and barely idled at any temp.
I found the chart on the truck for vacuum routing, looks like the mate up to AIR CLR BI-MET (bi metallic valve?). Any idea were this is exactly and what it looks like? I cant find anything else with open vacuum fittings near the air box.
Also, I wanted to test the ACT sensor, but I can't find that either... haynes says it should be on the air cleaner or intake... dont see anything with wires going to it.
BTW this is on a '90 ranger 2.9L 4x4