2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

goes way lean under load ???????

Old Oct 6, 2006 | 01:19 AM
  #1  
boost_its_what_for_dinner's Avatar
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RotoriousRx7
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From: goodlettsville,tennessee 37072
goes way lean under load ???????

well i thought my problem (bad cts) but i unplugged it and it ran the same and now heres question ... will unplugging it do anything or do u have to replace it period?

but my 87 t2 does the same thing but when cold it does cut out /go way lean as bad as it does when warm, but my does it under light-medium load light gradual incline in road or give it to much gas like say more than ( on a boost gauge) 10-15 in. hg. (vacuum, boost doesnt happen at all) and when my car is warm and i shut it off and restart i have to hold the pedal to floor to get it start up otherwise it just cranks like not getting fuel. also i dont mean to take over this thread but can the fuel pump power assembly ( all the parts u have to rewire when rewiring the fuel pump) go bad or not change voltage to kick up fuel pressure when under load/boost if so then i need to try that, ill stop there for now

87 t2
mods
3inch dp full exhuast
greddy profec b type s boost controller
boost gauge and a/f gauge narrowband but i have hooked a wideband and drove around and it goes way lean under loads like af ratios reaching 16.5s and higher
cone filter
block off plates all but egr* and cold start assist
new secondaries but not rewired and not checked but when i replaced them fuel was getting to them
redone vacuum lines on uim and rats nest
redone grounds all but the ecu grounds and added extra power wire from alt. to battery
new boost sensor
new afm
new o2 sensor
new tps
walboro 255 plh
fcd
wastegate is not ported?? need to do that ..
front mount intercooler and all piping is been check for air leak none
can it be a bad ecu i havent tried that yet?
fuel filter change also but can it be backwards and resisting high flow a pic of proper install would be sweet
newer plugs but not new wires

if any questions just ask i so desperate to get this car running good, i wanna shoot my self, thats how bad this sucks because everyone knows i have a sweet car but it wont run right so its a freaking hoopdie to me now since its not worth bragging about even though i have it in good condition and a frontmount doesnt exactly keep the crowd away and p.s. im not big headed just wanna back up the looks and mods with an engine that performs the way its supposed to...
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Old Oct 6, 2006 | 06:38 AM
  #2  
SureShot's Avatar
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From: Orange Park FL (near Jax)
It could be something simple - check if the FPR hose is still connected.
It's easy to overlook back behind the manifold.

Last edited by SureShot; Oct 6, 2006 at 06:40 AM.
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Old Oct 6, 2006 | 06:52 AM
  #3  
RETed's Avatar
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From: n
Aren't you making multiple threads on the same thing?


-Ted
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Old Oct 6, 2006 | 08:07 AM
  #4  
tIIsleeper's Avatar
pp
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From: Central Massachusetts
What size secondaries did you put in?
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Old Oct 7, 2006 | 09:55 PM
  #5  
boost_its_what_for_dinner's Avatar
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RotoriousRx7
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From: goodlettsville,tennessee 37072
550's and yes ted becuase the problem isnt fixed yet...
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