I JUST BOUGHT A 99 S80 WHEN I FIRST GOT IT WAS HARD TO START AND WHEN IT DID RPM WHERE VERY LOW LIKE IT WAS READY TO TURN OFF HAD TO HOLD GAS PEDAL DOWN TO KEEP IT RUNNING THAN ONCE IT WAS WARM IT WAS FINE THEN I DIDNT START IT FOR A FEW DAYS NOW IT WONT START AT ALL IT CRANKS BUT WONT START AND THE CLUSTER AND HEATER PANELS ARE ALL OUT PLEASE HELP ME

 

Check all connections under the hood by the fuse panel.

 

do you mean to unbolt the fuse box and check wires underneath?

 

You won't need to unbolt it you shold be able to lift up the red cover and check connections. Also check the fuses.

 

i checked all fuses and wires and connections they all looked good

 

Then maybe the cluster or Cem might be bad.
Before this happened was the ABS module bad?

 

ok i got the car started with new plugs at idle it goes up and down still no cluster

 

If you clean the throttle body the idle might get better.

Still not sure about the cluster you would need to read codes on all the systems to see what is going on.

 

i cleaned the throttle body already do think its the sensor on the throttle body

 

The entire throttle body is electronic. There is a 10 year200,000 miles extended warranty on it but there needs to be specific codes in there and they need to run tests to make sure it will fail before they replace it.

 

i brought it to the dealer and they told me that they already did it in oct 2007

 

Ok then maybe something with the cluster not working is making it run like that.