Idle problems

[whiteturbo]

Alright, ive searched, but this is more a desperate/angry/upset post. So i purchased a 1g fwd laser turbo, it has b16g with all the supporting mods. My first problem is, lets say its in neutral and i give it some gas, it revs then the idle gets real low. Im talkin the 700-800 rpm. (as stated on the Apexi S-afc. It then will idle poorly and rich (autometer a/f ratio gauge) and then it takes a little time until it regains normal idle. Should i bring it to my "normal" mechanic, should i just read up and just try to tune it with the apexi unit? Or should i bite the bullet and take it to a shop like turbotrix etc. and pay a large amount of cash. If i then shut her down, it will take 3+ cranks to get her started up. My mechanic says my radiator seems to be bent at the bottom, does this mean it could be a direct cause to this problem? Next i think my problem is the shifter bushings. Some times i put it into first but it just grinds and isn't all the way in. I have to place in neutral and push the clutch in again. Is that my own fault or is somthing needed to be replaced?
this is my mod list ftw:
Wiseco Pistons
Eagle Rods
ARP Head Studs
3 Layer Head gasket
Ported Head with 1mm Oversized Valves
264 Web Cams
t-belt, oil pump, water pump, balance shaft
removal done at engine build.
Walbro 255 Fuel Pump
RC 550cc Injectors
Blaha Air Intake
Dejon Tools Intake Pipe
Upgraded Turbo Outlet Pipe
MHI EVO III Big 16G
95 Ported Exhaust Manifold
Tial 38mm External Wastegate with Dump
Ported O2 Housing
2.5 Full Exhaust with Apexi N1 Muffler
Upgraded Intercooler Pipes with Crushed 1g BOV
thanks for the help.. im just really uneasy about this situation.
andrew

 

[andymoraitis]

A great source for repaired ISC's at a reasonable price is:

http://www.throttlebodys.com/DSMTBs.htm

This guy has high quality stuff and it won't break your wallet to try one and see if it solves the issue.

Good luck and keep us posted,

Andy

 

[steve]

Change your ISC (Idle control Motor)....The car is stalling cause the ISC is dying. When it goes bad completely it will short out the Capacitors in the ECU and they will leak acid on the ECU board, thus burning out the ECU. If you wait too long you will need a new ISC and ECU.

The ISC is what causes the Capacitors to leak (smoking the ECU)....stalling is a good sign that you need a new ISC. Just change it, its easy

This is nonsense.

Yes, a malfunctioning ISC can cause the car to stall but so can other things like bad capacitors or vacuum leaks.

The ISC doesn't have anything to do with capacitors leaking. Leaking capacitors can damage the ISC control circuits and shorted ISCs can smoke the driver chips but what what you posted is rubbish.

Steve

 

[Jeff99GS]

Well sorry if its not 100% correct but I think thats steering him in the right direction....I have 2 friends with 1g laser's and both cars did the exact same thing. They Idled poorly for about 6 months till all the sudden their ECU went bad. When they replaced the ECU the car would run fine but still stall occasionally at startup, They both had fauly ISC's. I'm just speaking about an experience that happened to people I know. This guy said he looked at the ECU with a magnifing glass and saw no leakage. So maybe he should check his ISC, thats all I'm sayin.