Tach is going crazy

[snoboardcore]

Hey guys my tach jumps all around from like 3000+rpm when u really hammer into it. The tach will go to 5 then 2 or 3 or 6 then to 3 anyways it jumps all over the place. I look at my monster tach and thats does the same thing. What do you guys think it could be? Possibly my coil or crank sensor?

 

[Xpipe]

check ur ground cable ,my car did the same thing with me and i found out i had some paint on my ground cable

 

[Piston]

Hey guys my tach jumps all around from like 3000+rpm when u really hammer into it. The tach will go to 5 then 2 or 3 or 6 then to 3 anyways it jumps all over the place. I look at my monster tach and thats does the same thing. What do you guys think it could be? Possibly my coil or crank sensor?

LOL... my tach is doing the same except it revs to 10k for me.

 

[snoboardcore]

where exactly would the ground cable be im a little new to 5.0's

 

[snoboardcore]

bump

 

[HISSIN50]

Hey guys my tach jumps all around from like 3000+rpm when u really hammer into it. The tach will go to 5 then 2 or 3 or 6 then to 3 anyways it jumps all over the place. I look at my monster tach and thats does the same thing. What do you guys think it could be? Possibly my coil or crank sensor?

you dont have a crank sensor. pull codes. look for PIP or IDM codes. good luck.

 

[snoboardcore]

thanks but no codes showed up any other suggestions?

 

[snoboardcore]

bump

 

[snoboardcore]

anybody?