95turbo gxe

iTrader: (25)

Im not sure if one of the vacum lines are wrong or what. Ok on my mid pipe their is a vacum line right by the sensor. Im not sure where it goes but i got a bolt blocking it for now.Did you use the 5th gen throttle position sensor in your swap? I cranked mine up but it just just idel at 1500 for like 5 seconds and then goes to 2200 and bounce between 2200 and 2500. ANy ideals what I may have done wrong. I used the 5th gen throttle sensor.

matty

iTrader: (54)

Go back to the 4th gen TPS and let the car fully warm up, then adjust it. You also need to adjust it AT IDLE and at WOT. You need to look in the FSM because that line going from the Midpipe is fresh air that goes to one of the EGR/EVAP sensors on the one of the gallys. Check that out

-matt

matts95max

iTrader: (11)

I used the screw on the tb to adjust idle once I got the 4th gen tps reset to factory spec. my idle was around 700-800

95turbo gxe

iTrader: (25)

ok I tryed the 4th gen tps with luck. it will start up at 1300-1500 then after like 5 seconds rise to 2000 where it just bounces back from 2500 to 2000. My intake is so loud I cant listen for leaks but their should not be any. any ideas?

MDeezy

iTrader: (27)

have you tried adjusting the TPS lower?
Do you have the iacv hooked up?

95turbo gxe

iTrader: (25)

Yeah i tryed to adjust it and that is where its at now if i turn it anymore it just goes up in idel. the iacv is hook up!

jcy98maxse

iTrader: (8)

this happened to me when i did my dek swap. the upper/lower IM wasnt seal properly casuing a vacuum leak. I reinstalled the Im and may sure there was no leaks and the jumpy idle was gone. I also had a starting problem even with the IACV, at start up I would have to hold the throttle up for about 10 sec and then it would idle. Adjusted the TPs a little bit but what fixed was the TB screw, it idles fine since that adjustment.

The bouncy idle is definitely vacuum related, there are a few threads that are related to that. Good luck!

95turbo gxe

iTrader: (25)

how to confirm that though. i blew smoke through the intake and itall came back out of the throttle body?

95turbo gxe

iTrader: (25)

ok just went out to blow more smoke through and none came out! I have a steady 20mg on the vacum gauge but still this up and down idel. I can rev it up and it revs nicley. Not chopped but just a high floaty idel

Nismo3112

iTrader: (12)

My friend also had this problem with an 00VI swap.. BUT his car would idle normal from cold to warm, until you turn the car off. Start it again and it would have a 2000 idle. We swapped back to a USIM, and the problem still existed.. We still haven't figured out what the problem was..

gtr_rider

iTrader: (50)

Did you guys happen to move over the air flow metering sensors from the DE coolant log? I believe we had this same issue with our DEK swap and when we swapped over the sensors that werent present on the DEK motor the idle went back to normal.

matty

iTrader: (54)

Air Flow Metering Sensor ?? Whats that ?? The only things on the DE coolant log is the ECTS, Coolant temp sender

-matt

95turbo gxe

iTrader: (25)

yeah do you have a pic?

gtr_rider

iTrader: (50)

there is a web of sensors connected to the DE coolant log(96) which we had to switch over to the DEK log and the idling problem stopped. Not sure their purpose but they fixed the wierd idle. they all seem to only require vacuum

KRRZ350

iTrader: (29)

The best way to find and confirm a vacuum leak is to use extra strength starting fluid, spray it in the leak prone areas with the engine running. Use common sense, I've never had a problem but I always grab my fire extinguisher and put it next to the bumper, but then again I wear my safety glasses alot to, who does that? Also, if you have a cone filter it helps to sheild it with a peice of cardboard, you'll understand.

is your fuel pressure still out of whack?

95turbo gxe

iTrader: (25)

yeah I found a broke fuel hose. ifixed it but the fuel pressure is still down. ill look it over after replacing all the fuel lines tommorrow, and let you know

95turbo gxe

iTrader: (25)

ok I cranked it up today and it had 60psi of pressure and then i backed it down to 37psi. and it seem to stay thier just flickering a little. I still have the vacum leak too. But I drove it for a little while and got the air fuel ration around 13.2-13.8 at wot through out the rpm band. Its moving a little better but seem to be lacking something.I can hear the vi cut on around 5200rpms so it that well after driving it somemore it sould start bogging if you gave it more than half throttle so imguessing im losing pressure again. But why

jcy98maxse

iTrader: (8)

Do you have a WB to see if you're leaning out when you bog? I'm curious to see where you real actual FP is set @, it seems like you're all over the place. If your FP is really at 60psi for some reason, when you go WOT, the AFPR is gonna dump more fuel in than you gonna need since you get 0 vacuum at WOT. It maybe causing the bogging feeling but then again I don't know if you're running rich or lean at the moment in time.

Kevlo911

iTrader: (36)

Try to adjust the Base Idle if you have ruled out vaccum leaks(or the proper running of the lines) and if you have ruled out the IACV.

95turbo gxe

iTrader: (25)

Yeah my fuel pressure was at 60 becasue the other day when I was trying to drive it the pressure kept going down, so i use the afpr to try and bring it up and it would not. Then I left it alone for a couple of days not cranking it. So when I did crank it up it was at 60 psi .So i back it back down to 37 again. Drove it again for a little time the fuel pressure would stay their and wot was like 13.6 on the wide band o2. Then drive it some more and it just start going down. When Im boging the air/fuel is around 15.8 to 16.9 But thats after driving a coule of miles when it will start donig that.

matty

iTrader: (54)

Get a NEW fuel pump in there, and report back

and check your fuel line routing

-matt