Questions & Answers for: Pontiac Grand Prix tach crazy

Engine misfires under load when warmed up. Replaced all six injectors and problem persists. Tach and speedometer both go gonzo when accelerating/rounding curves. Lowell, MN check the mass air flow ...

...have a 98 grand prix 3.8L and sometimes it's hard to start. then sometimes going down the road the tach goes to zero and the speedometer starts swinging while the car is trying to stall. If the ...

...are eratic? Cleaned battery cables,checked fuses,all seem fine.When the key is turned both the tach and MPH gauges are erratic dash lights also flash and act abnormal. check battery voltage it ...

...tach at 1000 rpms or higher it keeps running. I'm eating through a tank of gas like crazy. Get a free code at AutoZone or some other place. It could be one of the many sensor problems. Especially the ...

what is the problem when the tach quits working and at the same time the tcs light comes on You have a blown fuse or cable is broken

...YOU CAN BE DRIVING AND YOU GET 1998 GRAND PRIX YOU CAN BE DRIVING AND YOU GET A LITTLE MISS AND THE TACH WILL GO TO 0 AND THE LOW TRACK LIGHT COMES ON have some shop check for codes in history files, ...

code 12 ,,, no tach signal to computer. i looked for a wire but there is no extra wire by the dist. where does the computer get its signal??? it is a 85 poniac grand prix le The ignition module FAULTY

tach dies and engine stalls sometimes. i can't press the gas pedal too far or the engine revs and the car slows down but doesn't stall. Sounds as if it is starving for air or fuel. check the air ...

...position sensor. I have a 2001 Grand Prix, and when the crankshaft position sensor went out, the tach would drop to zero, and the car would act like it wanted to stall for about a

my tach floats while under load 2003 grand prix what would cause this? While driving down the fwy at constant speed or under acceleration load, the tach will drop out to about 2000 then float back up ...