i have a pontiac sunfire 2000 2.2liter?

Question

i have a problem with my car the digital millage on my dash board sometimes cuts off numbers and flickers . the only time you can tell the current millage is when you first start the car up. i was told the might be a sensor thats causing it behind the dash board does anyone know what it is called and can i fix it my self. 2. i just had a ignition coil and motor mount repaired on my car but the engine still shakes. the mechanic said it is cause one of the threads on my head cylander is messed up but another mechanic put a heli coil so i thought it was ok is tat true? i also was told it would cost me 600 to get fixed is that true?

Answer 1

1. The LCD Odometer Connections are getting worn from vibration. You see it better cold, because as it warms up, it will pick up more electrical disturbances thru out the cars Elect. system between the Key switch, Alternator, Ignition, Lights and Instrument Cluster.A new Speedometer is easiest & cheapest in the long run.

2. Check other Motor Mount & Transmission Mount closely, not only for deteriation & cracks or tears, but also for spongyness from oil saturation. Helicoil usually works best with Cylindrical Loctite for long term repair, otherwise the Aluminum maybe to porus to hold in that certain area. I usually just weld up the hole & repair it myself. I'd get a remanufactured long block (with Head). You will get a Warranty, and the head is already torqued to Specs. by the manufacturer, thus eliminating possible error by the mechanic. $875 for the Long Block. $375 for the Labor. By The Blue Book it's $4800. A 2 Door Coupe Blue Books are approx. $6800, in Excellant Conditon. I'd put a quick fix on it and trade it in. Their are a few more options, to do but bacically it will be more than the car is worth.
Well, Good Luck On It!
Vio_Storm