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Won't Idle


beaner
Blew1 Guy Today


Galant VR-4 org Post #: 969041 posted 02/10/11 01:47 PM     Remind Me!  Send Private Message   Edit Post      
I've been spending fall and winter rebuilding the engine in my 92tsi. I just got it back together and it won't hold idle. Basically it starts, revs up to 2500-3000, then just dies about 2-3 seconds in.

6 bolt 2.0 8.5:1
hks 272s
evo 560cc injectors
93oct @ 37psi
virgin 2g maf
stock tb/manifold
new bosch o2 sensor
isc is good
tb and throttle closed switch is adjusted perfectly

I've played with 180'ing the cas and swapping the plug wires. I've also played with the BISS. It's 2 full turns out right now, but nothing changes when I mess with it either way.

Thanks for any help.


click

Posts: 1550 | From: b'ham, mi | Member Since: 06/22/05 | IP: (99.150.155.107) | Report this post to a Moderator

524of1000
Crossed Member
524/1000


Galant VR-4 org Post #: 969043 posted 02/10/11 01:53 PM     Remind Me!  Send Private Message   Edit Post      
Sounds like it's too lean. Check for an intake leak, make sure all couplers are on correctly, that the trottle plate is closing properly, the TB bolts are torqued down, ect. I had a similar problem, it was sucking in air between the TB and Intake Mani because it wasn't torqued properly.



America was raised on speed. Hot, Nasty, Bad ass speed. - Eleanore Roosevelt, 1936

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Red_Bird
Unregistered


Galant VR-4 org Post #: 969064 posted 02/10/11 03:02 PM     Remind Me!  Send Private Message   Edit Post      
Can you hold it in an idle? What does it sound like when it idles? I would not say that this a fuel issue, because if you are too lean to where it dies your car will not start. Have you tested your TPS? and your gounding switch?

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beaner
Blew1 Guy Today


Galant VR-4 org Post #: 969083 posted 02/10/11 04:51 PM     Remind Me!  Send Private Message   Edit Post      
When the RPMs fall, I can keep the car alive with my right foot. I was afraid to do this though cause I know something isn't right and there's way too much time and money into this setup. I adjusted the TPS forever ago with an ohm meter, then when I installed DSMLink the TPS logged from 0 to 100 perfectly. I didn't test the closed throttle sensor, but I adjusted the TB cable and that sensor perfectly according to my eyeball.

Posts: 1550 | From: b'ham, mi | Member Since: 06/22/05 | IP: (99.150.155.107) | Report this post to a Moderator

Lonewolf64
Obviously the answer is......
889/1000
1247/2000


Galant VR-4 org Post #: 969088 posted 02/10/11 05:04 PM     Remind Me!  Send Private Message   Edit Post      
From your OP I can't tell if you've actually gone through the proper base idle set procedure. You should definitely do this if you haven't. You should also get out your multi-meter and check your closed throttle switch to see if it works. If neither of those things help and you are sure that your ISC works, I would try swapping out to a known working CAS.



1992 Galant VR-4 #889
1991 Galant VR-4 #1247
2007 Civic Si DD

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beaner
Blew1 Guy Today


Galant VR-4 org Post #: 969090 posted 02/10/11 05:22 PM     Remind Me!  Send Private Message   Edit Post      
I'll test the closed throttle switch tonight.

I already tried swapping the CAS from my gvr4, which runs fine. The CAS in the log is the gvr4 CAS. So it for sure works.

Posts: 1550 | From: b'ham, mi | Member Since: 06/22/05 | IP: (99.150.155.107) | Report this post to a Moderator

Red_Bird
Unregistered


Galant VR-4 org Post #: 969095 posted 02/10/11 06:02 PM     Remind Me!  Send Private Message   Edit Post      
Also be sure that your timing is correct. As well as your ignition system.

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Adorsey
Member +
1942/2000


Galant VR-4 org Post #: 969167 posted 02/10/11 10:31 PM     Remind Me!  Send Private Message   Edit Post      
You can simulate Closed throttle switch on dsmlink.
It could be in the wiring, after the connection at the tb is made.



1942/2000 DD
[email protected]
93oct b16g

Posts: 355 | From: mass | Member Since: 04/22/09 | IP: (74.82.64.18) | Report this post to a Moderator

aaron619
Newbie
1799/2000


Galant VR-4 org Post #: 969213 posted 02/11/11 06:18 AM     Remind Me!  Send Private Message   Edit Post   
What your describing sounds like an intake/boost leak. If the car will run off idle, and the TPS, CAS, and closed throttle work. Do you have a boost/vaccum gauge installed in the car? If you can get it to idle, even if high, with closed throttle you should have around 20"hg on your gage (with stock cams). If not, I would start looking for a big vaccum leak- brake booster, intake manifold, ect. If you do have good vaccum, look for a leak between the MAF and the turbo inlet, that's assuming it is working as designed. My 2 cents



I live my life 1 40 oz at a time...

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