Fox T-Bird/Cougar Forums  

What???

I don't think that's normal as mine does not do that.

Kinda hard to explain it really -- only does it with the heat on HI.
An example -- depending on a few factors (temp., running time, etc.) my gauge may fluctuate between 5 and 6 bars on the digi dash.  Turning the heat to HI will make it read a constant 6.....Turning it off will cause it to fluctuate again.

When I had the chime issue, it would sometimes alleviate it.
If the gauge is @ a steady 5 bars now it won't push it to 6......

I have more grounds in this car than I know what to do with as well.....They're all in good condition as well.

Hmm perhaps there is a problem with the gauge cluster in your car. Have you tried to swap in another cluster just for fun?

Cluster's been checked over 6 ways from Sunday.  Carm explained a feasible reason as to why it most likely happens a while back.

The interior lights pulsating stopped after I replaced one vacuum line. I'm guessing it was because I bumped the wiring for the alternator so I'll have to check all of that. I fixed one vacuum line that was coming off of the upper intake manifold and going to some kind of canister-like sensor that has a connector with two wires under the air box on the passenger side. What is that? It didn't have vacuum for a while and the car ran fine so I'm just curious as to what that is exactly. I got that vacuum line replaced and I have the one below temporarily fixed with some 3/16 fuel line (which is too big). Does anyone know what size ID vacuum line I need in the spot below?

The canister under the air box is just that.  It's your charcoal canister that connects to the canister purge solenoid.  When the CP solenoid opens it removes the vapors that are stored in the charcoal canister (which are from the gas tank) and these vapors are sucked into the intake manifold.

It will open during warm cruise and deceleration. 
Should look like this

The line that is circled and to the left in the picture you posted....does it run to the frame rail and go through it?

I meant the picture's left; not the car's left.  Just want to make sure we're talking about the same line. 

As far as the solenoid -- Since it's open I would imagine it's throwing a code.  The car will run perfectly fine with it.  I'd replace it. 

Which side is busted?  From the canister or to the manifold?

In one short answer yes and no.

Have you hooked up a real gauge to read the real oil pressure?

My cluster has never read error anywhere on it. The oil pressure sensor has also not worked correctly since I have owned the car. The lights and cluster can be replaced very easily. I would pull the cluster out and make sure that the factory plastic printed circuits are not broken or missing.

Intake manifold is not to hard, but make sure you know how all the vacuum lines hook up. You will need to pull the intake to get to the valve covers. I just did the valve covers on my car. On one side the gasket was doubled up and there was blue silicone everywhere. I spent quite a bit of time sing off old gasket material, and it was very hard to try to not let any get into the engine. I wish I would have had a shop vac. Took me about 3 hours overall.

Non-working heater can be alot of things. Have you checked your coolant level? is the core hooked up still? What does your tempeture gauge say when it is warmed up?

the throttle cable just pops off of the throttle body. It is one peice more or less with the tv cable. There shouldn't be any adjustment required. I also swapped on the H.O. upper/throttle body, and I could tell absolutely no difference. Vacuum lines sucked to swap over. Use the parts from the old intake and swap them onto the new one, if you choose to go that route. I ended up swapping my IAC, TPS, and all the threaded vacuum inserts from the old intake setup. With the IAC that was on the new intake, the car would rev to 1500RPM and stay there. Don't forget to get the "upper plenume" gasket before doing the swap.

Also, your heater sounds like the classic heater core problems. Gets clogged or just dosen't work. Leave it in there long enough, and it might blow antifreeze all over the inside of the car.