[murrayr7]

I have been chasing misfire code on #5 cylinder ......... what I have found is that it seems to lose all vaccuum after the engine comes to temp........ i.e. the heater blend control turns off along with the idle taking a dump!.....can anyone help?

 

[sheila]

For a po305, i would be checking plug, wire and coil in that order. Might check vac. elbow on top of pcv valve for vac. leak.

 

[sheila]

Also check hvac vacuum lines for leaks.

 

[murrayr7]

vaccuum

Thx......... will check the PCV elbow........ as soon as we get rid of freezing weather!