fpr question

[elipsekid]

i am pretty new to these trucks...ok i was replacing my cap and rotor
and when i was done i saw a hose coming off of my kb fpr
is this supposed to hook-up somewhere or no cause ive never noticed this before and i cant find any info or any pics that can help me find out where it goes

thanks

 

[Lynn D. Brown]

Is the vacuum line hooked up to the solenoid ?

 

[Sy769]

Yes There should be a hose that connects to the AFPR to the upper intake manifold at the rear.

 

[dgoodhue]

It goes to teh back of the upper intake manifold. If it has broken, it is very bad! Your ECM would not be able to add fuel because it vconnect to you map sensor (the ECM use MAP and RPM to detrmine most of your fueling) The FPR line aslo increasing the fuel pressure as you drive. AT WOT, this would drop your WOT by ~10%.

 

[elipsekid]

well the truck hasent been running for awhile it was cranking but wont turn over...and now the battery is dead so i charged the battery and changed my cap and rotor and that is when i saw it

coming off of my kenne bell fuel pressure regulator there is a hose that is about 7 inches long
i looked again and i found a vac line size hose sitting behind the upper intake that runs into a t connector then goes to the map sensor the other part of the connector goes rite up to where my boost hose comes out of and connects to my boost gauge

i should just connect the two and clamp them together? cause it looks like the vac line size hose can fit inside the the hose that is coming off of the fpr

thanks again

 

[SY2932]

I would not recommend having the vacuum line for your boost gauge and your AFPR shared. Even though the vacuum line to the boost gauge is presumably small and not very long, it could affect your fueling with the extra volume. It isn't wise to tamper with the vacuum to the MAP sensor either... Your best bet for connecting your boost gauge is to get a fitting that goes between your plenum and brake booster: http://syty.huryde.com/products.htm Unfortunately, I am away from home currently on a job or else I would help you on the vacuum line routing. But, I'm sure someone else will be me to it. HTH's

Mike Campbell