I just did the belts and tensioners and other typical items on my '88 mondial - basically, the 30K service. The car hasn't been driven much in the last few years, perhaps 500-1,000 miles. Here's what's funky.... The tachometer is reading, but very slowly. Meaning, it's reading out, but probably a third or less what it should be. In other words, what feels like about 3,000 rpm is reading 1,000 rpm and she sits on the needle at idle. The car is equipped with the motronic system. I've cleaned all visible grounds, checked the protection relay (functioning fine), cleaned the contacts on the tacho flywheel sensor and cleaned all the contacts I can find in/around the motronic ecu in the truck. What next? Diagnostic check on the flywheel sensor? Also, incidentally, the car feels a little sluggish and does a little spitting and farting when the throttle is applied more vigorously. The gas is reasonably fresh (and has Stabil) so I don't think it's old gas. New injectors, plugs, wires, caps, rotors, etc. all w/in the last couple of years and with very little use/wear. Any suggestions are much appreciated!