2004 dodge ram 1500 5.7L MAP value?

[shelby5041]

hi
can someone with an 04 dodge ram with 5.7L verify their manifold absolute pressure via scan tool live data for 2 different methods.

1. with cold engine off / key on...pressure?
2. then start car and run at idle for about 30 seconds- 1 min ....pressure?


thanks

 

[NCRaineman]

hi
can someone with an 04 dodge ram with 5.7L verify their manifold absolute pressure via scan tool live data for 2 different methods.

1. with cold engine off / key on...pressure?
2. then start car and run at idle for about 30 seconds- 1 min ....pressure?


thanks

Key on engine off your MAP should be reading atmospheric pressure... so 14 - 15 psi depending on the altitude where you live.

At idle the value should be somewhere around 5, vacuum created by the downward motion of the pistons.

Can't discount the atmosphere in calculations!

 

[shelby5041]

great thanks thats what i have.
15psi and 5psi