I am borrowing/fixing up a friend's 94 3.8L bird. It is GREEN with a GREEN interior. It's hilarious.
Anyhow, the car runs bad, like it has a miss or something. Upon initial inspection, the entire air intake tract wasn't tightened down, it was loose (like, REALLY loose) at the throttlebody and at the MAF. Tightened it all up, cleaned the MAF, ran seafoam, and it runs a little better.
I bought a set of plugs but I haven't installed them yet. Splitfires. .99c
It doesn't feel like it has all the power it should.. "yes, we know, it's a 3.8L", you say. Yes, but it doesn't feel like it's even making the power appropriate for the 3.8L. This is a rebuilt engine with 30k or so on it.
The chassis, on the other hand has 220k or so on it.
Anyhow, yeah, I can't figure out why it's running bad, it isn't throwing a CEL or anything.
I thought I would also raise the point that this car has a Distributorless ignition system (DIS) which I'm not sure whether or not is supposed to be there, because last I checked the 3.8's usually had a distributor... and it also has an electric rad fan... don't the 3.8's usually have a clutch-fan???
Anyhow, back to my point about the tach... it is crazy. It is ridiculous, either it says 500-1200rpm, or it goes backwards down to zero as the revs climb. It's stupid.
Is this a bad tach, or another problem? I am thinking about disassembling the dash and installing another tach since I've got one.
Any input as to what the devil is causing my problems would be much appreciated.