The ol' BII has developed a cold start issue, and I tracked it down to the Engine Coolant Temperature Sensor.
This sensor is under the throttle body, in a pretty tight spot.
She also needed a tune up, and had developed leaks from the valve covers, so I decided to pull the upper intake to make the job easier.
Since I removed the upper intake, I picked up a Fel-Pro plenum gasket set.
Along with a complete Motorcraft tune up...cap, rotor, and wires.
Here she is topless...
Gaskets seperated and glued down...
I use synthetic 5W-40 Rotella in the summer and Mobil 1, 0W-30 in the winter, and the valve train is very clean...
same on the left side. No gunk here...
There is a step between the head and intake manifold, both front and rear
This gets a big dollop of Ultra-black RTV
The new ECTS gets some teflon tape, and is ready for install...
Here it is in place...
The old plugs look pretty good after 70k miles
New plugs are gapped. Spec is .042 - .046
After the plugs are installed, the valve covers are next
Next is the cap & rotor and new wires...
Finally, the upper intake is reinstalled, along with all the wires, vacuum lines, throttle linkage, and intake hose
Here is a shot of the left side header. They are coated Pacesetters, and look almost as good as new after more than 100k miles.
She fired up instantly and ran like a champ. Even though the idle was right on spec, I still checked the intake and all the lines to make sure that there was no vacuum leaks. She's ready for the summer.