Xj broke down while traveling

[RCP Phx]

Victor I hope you knew to buy Champion Std Copper or equivalent, no fancy plugs on the 4.0!

 

[Vitzaa]

Yes, went with the ngk zfr5n plugs gapped to .035"...

Aside from a dirty idle air controller, anyone know what else could cause a low idle? I'm between 600-700. It's always been like this and I attributed it to the plugs. Now that the plugs are fresh, it's still in the same range. Idles extremely smooth otherwise

 

[lawsoncl]

Got a scanner you can verify the idle rpm? The tach guage might be off.

 

[maxbraketorque]

Yes, went with the ngk zfr5n plugs gapped to .035"...

Aside from a dirty idle air controller, anyone know what else could cause a low idle? I'm between 600-700. It's always been like this and I attributed it to the plugs. Now that the plugs are fresh, it's still in the same range. Idles extremely smooth otherwise

My 2000 fed emissions has always idled at ~670 rpm as shown on my OBD-II reader. Very smooth idle.

 

[Vitzaa]

Yup, 670-680... Gonna clean the IAC and see what happens