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High Idle GGSX


18GVR4
Member


Galant VR-4 org Post #: 1230542 posted 07/23/16 07:00 PM     Remind Me!  Send Private Message   Edit Post      
I bought a non running GGSX. Swapped the ECU and CAS and it fired up. Drove it around and it runs pretty good. On start up the idle is 2,500. after warm up, it drops down to 1,500. Biss screw all the way in and it will not drop any lower. I blocked off the EGR, checked all the vacuum lines. still 1,500. could the timing be off, or a leak somewhere? Thanks in advance.



1990 GGSX

Posts: 145 | From: snohomish, wa | Member Since: 07/09/05 | IP: (2600:100f:b02e:3) | Report this post to a Moderator

strokin4dr
fighting them with a large needle
1280/2000
1135/2000


Galant VR-4 org Post #: 1230545 posted 07/24/16 12:48 AM     Remind Me!  Send Private Message   Edit Post      
"Biss screw all the way in"

Did you ground the timing connector and adjust it correctly, or just screw it in as far as it'd go?



1908- sold and missed.
1280- 2.3, FP 35R, E85, etc.
1135- 100% stock
'93 Mirage hatch- 4g63, AWD, etc (hoarding for build)

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tombaman
Junior Member


Galant VR-4 org Post #: 1230553 posted 07/24/16 02:05 PM     Remind Me!  Send Private Message   Edit Post      
I had this problem the whole time on my ggsx. Start up idle was about 2200 til it warmed up. Then it would go down slightly. Tried adjusting biss screw correctly. Could never get it right. Either really low stumbling idle or a high idle. No in between. It was really weird.



564/2000 back under the knife...
90 ggsx stock atm... Wrecked. Parting out
89 Jeep cherokee (daily)


Edited by tombaman (07/24/16 02:07 PM)

Posts: 73 | From: rensselaer, in | Member Since: 03/17/14 | IP: (2600:1015:b01f:d) | Report this post to a Moderator

18GVR4
Member


Galant VR-4 org Post #: 1230554 posted 07/24/16 02:53 PM     Remind Me!  Send Private Message   Edit Post      
Strokin4dr, I did not have the connectors grounded. I'll try that this afternoon.
Tombaman, did you ever figure it out?



1990 GGSX

Posts: 145 | From: snohomish, wa | Member Since: 07/09/05 | IP: (2600:100f:b02e:3) | Report this post to a Moderator

tombaman
Junior Member


Galant VR-4 org Post #: 1230560 posted 07/24/16 05:17 PM     Remind Me!  Send Private Message   Edit Post      
Got into the accident before I ever got it figured out. Sorry.



564/2000 back under the knife...
90 ggsx stock atm... Wrecked. Parting out
89 Jeep cherokee (daily)

Posts: 73 | From: rensselaer, in | Member Since: 03/17/14 | IP: (2600:1015:b01f:d) | Report this post to a Moderator

holeshotmoe
subclass marmoreus


Galant VR-4 org Post #: 1230942 posted 08/10/16 11:13 PM     Remind Me!  Send Private Message   Edit Post   
Check the wire on the throttle stop switch. If it falls off it will idle high like that, even when warmed up. Notice the blade on this one is short, so the wire falls off easily.




Done there, been that

Posts: 1274 | From: MD | Member Since: 04/07/05 | IP: (108.31.167.181) | Report this post to a Moderator


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