alemmons

iTrader: (14)

So my car is an 89 GXL with JDM TII motor. Street ported, front mount, Racing Beat 3" downpipe/presilencer, apexi dual n1, ported wastegate, front mount intercooler, supra tt fuel pump. Monitoring with DEFI boost gauge and LC-1 wideband. Rebuilt about 6000 miles ago. Lately having some issues with flooding while idling or driving. Completely random and will usually fix itself in a minute or two but untill then it runs really rough and has little/no power. I don't currently have the wideband hooked up to datalogit, but when it starts acting up the Gauge goes from ~13:1 down to 9:1 or 10:1. Trying to figure out what can be causing my symptoms. If you look at the attached spreadsheet around line 1400 it starts acting up. This is all at idle. Notice injector duty cycle goes up and a loss of vacuum. IDL and IGT also make a noticeable change. Also of interest is that the water temp sensor seems to go crazy. Could that cause any of these problems?

alemmons

iTrader: (14)

Sorry, the log wasn't included. Here it is.

4WDrift

iTrader: (3)

without looking at the log i can tell you that your temp sensor will change the fuel mapping by adding to the injector dutys that you have programmed in the pfc. so check wiring to the sensor and check the sensor itself. even if its not "the" problem behinde your flooding then it will cause problems.