Over Boost Codes. :(
#1
Over Boost Codes. :(
Yesterday I just pulled 2 codes they were -
p1242 - Secondary upstream manifold air pressure sensor too high in deceleration
p1238 - Secondary upstream manifold air pressure sensor high input
I know these are over boost codes but how the heck am I throwing codes with a 17% pulley and a JCW head!?
Day Conditions when i got the code - 40f cold
Could someone tell me what's going on?
What should I do?
Get a higher flowing head?
p1242 - Secondary upstream manifold air pressure sensor too high in deceleration
p1238 - Secondary upstream manifold air pressure sensor high input
I know these are over boost codes but how the heck am I throwing codes with a 17% pulley and a JCW head!?
Day Conditions when i got the code - 40f cold
Could someone tell me what's going on?
What should I do?
Get a higher flowing head?
#4
By pass valve (BPV), looking at the intercooler, place your hand to the right of the intercooler output duct and follow it down toward the intake manifold, the BPV has a small plastic arm attached to a lever, actuate (press) the little arm with your finger and feel for ease of movement, it should spring back contacting the end stop. If it doesn’t operate freely or doesn’t return, it will need replacement; it is a warrantee item.
My BPV failures manifested themselves at lower rpm but it's worth a look.
My BPV failures manifested themselves at lower rpm but it's worth a look.
Last edited by k-huevo; 03-06-2008 at 11:22 PM.
#5
By pass valve (BPV), looking at the intercooler, place your hand to the right of the intercooler output duct and follow it down toward the intake manifold, the BPV has a small plastic arm attached to a lever, actuate (press) the little arm with your finger and feel for ease of movement, it should spring back contacting the end stop. If it doesn’t operate freely or doesn’t return, it will need replacement; it is a warrantee item.
My BPV failures manifested themselves at lower rpm but it's worth a look.
My BPV failures manifested themselves at lower rpm but it's worth a look.
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