I did a LS swap into my EF and am having idle problems, check engine and signal five on the brain. (5 is MAP)

Here is the run down...

Start the car and it idles really low UNTIL the check engine light comes on and it runs normal (with a flux idle like i may have a bad Idle control valve) or likely a vacuum problem.

first question: did i hook the lines up from my MAP correctly? anyone have a picture of a old skool map on a EF to a LS?

second question: would it just be easier to put my GSR TB on and just get a new skool map and call it solved?

a picture would be awesom of where the lines are supposed to go or a description would be good to. thanks!

 

i interested in the same thing, would like to see a b16 swap done. Would like to see the vacuum hoses hooked up...

 

i think your map sensor should be connected to manifold vacuum. that means it should be getting vacuum at all times until the rpm is raised(i.e. you rev the engine). if you have a vacuum pump( mity-vac makes a good one for around 20 bucks that you can get at nearly any parts store). if you connect a line from the pump to the map sensor port and pump it till the guage reads about 15 or so, and then start the car, your idle should be fine. if not, then your map sensor is bad. if idle is good, then your vacuum line is connected wrong. of course, the 15 i mentioed above is a ballpark guess, and if i have my info wrong please correct me. this is how most of the stuff i see works.
the reason the idle straightens out when the light comes on, is because the computer will put in a generic value when it sees a bad reading. the computer fakes the correct vacuum value and the engine runs like everything is cool.

 

my map sensor is plug on the throttle body vacuum line, it only has one. Then the other vacuum line comes from the back of the intake manifold which is connected to the black canister on the left.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MIGPA26 &raquo;</TD></TR><TR><TD CLASS="quote">my map sensor is plug on the throttle body vacuum line, it only has one. Then the other vacuum line comes from the back of the intake manifold which is connected to the black canister on the left.</TD></TR></TABLE>

you mean to the charcoal canister right?

 

yeah, im not throwing any check engine lights, just want to make sure hooked up correct..