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View Full Version : Rich at idle, lean in boost? Sr20


Destructodc74
09-06-2010, 06:54 PM
ever since i relocated my battery to the back seat my car will not go into boost because it leans out. this happened before but it was because my fuel pump was not getting sufficient voltage. i have since wired it to get direct power from the battery on a relay. it will start climbing lean right at 4k rpms and rapidly climb until full lean. everything on the motor is stock aside from bolt ons. since then i have
-replaced fpr and fuel pump with known good ones (walbro 255)
-replaced fuel filter with new 300zx one
-cleaned ground on coilpacks
-cleaned and re grounded motor to body in two places.
-cleaned and grounded battery to body in two places

i relocated the battery because i hit a guard rail while sliding and it punchered the battery but i didnt have one small enough to fit in its place again. but after i hit the guard rail i backed right up and boosted away fine. and two days consistantly boosting after that on a 10v battery.
any help appreciated. thanks.

Destructodc74
09-08-2010, 11:25 AM
anyone have any ideas?

lazysk8er2
09-08-2010, 11:46 AM
where in ny are you?

Destructodc74
09-08-2010, 06:20 PM
binghamton ny

lazysk8er2
09-08-2010, 11:56 PM
what else did you damage when you hit the rail?

got a vid of what it does?

Destructodc74
09-09-2010, 03:13 PM
what else did you damage when you hit the rail?

got a vid of what it does?


only damaged the fender and headlight cover. and i also boost leak tested the car after and fixed that.

no vids as of now. i just got a spare ecu to try out. so well see how this goes. any suggestions would be great. it basically fuel cuts completely out by 4800rpms