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11-22-2009, 09:17 PM
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#51
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Whats the LSA on the cam?
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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11-22-2009, 09:26 PM
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#52
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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sorry buddy
OPEN LOOP - this is the mode your ECU is in until the coolant temperature and a couple other sensors get to operating values. This is also true when you are at WOT or when throwing codes/ CEL's
CLOSED LOOP - the ecu uses information primarily from the Oxygen Sensor and adjusts fuel delivery and timing to achieve minimum emmisions, better gas mileage and power.
i am certain you were still in open loop but let me know when you are working on it and i'll try getting over with a scanner again.
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11-22-2009, 09:26 PM
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#53
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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I got free time Tuesday. I think Ill be playing with the 72 on Tuesday to see if I can get it running.
Im not sure on LT1 cars, but does it take 30 sec or so for it to enter closed loop? Arent they heated, and therefor dont need to stay in open loop for that long?
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2/20/2013: They Day the ****s Stopped
Last edited by BigAls87Z28; 11-22-2009 at 09:30 PM.
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11-22-2009, 09:52 PM
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#54
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Join Date: Aug 2007
Location: Long Branch NJ
Posts: 706
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My took about 5-10 mins before it realized i cut one of the o2 sensors wires. You can use the "fix the autozone ford pickup" trick that Al knows about haha... start unplugging stuff and see if you can find a problem that way. Like if you unplug one o2 and it runs worse, but unplug the other and it stays the same, then you have a lead to go on...etc. Also are you sure about the fuel pressure/fuel injectors/harness? FP leak down test or just see what the static pressure is?
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Formerly known as REED!
JSFBOA
Draino?
Last edited by HeadlessNorseman; 11-22-2009 at 09:54 PM.
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11-22-2009, 11:15 PM
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#55
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Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
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mass air? or speed density?
if its speed density it will run like $%(* if not @ all if map is unplugged/bad
ect will cause it to dump fuel if bad
what plugs you runnin? if it ran too rich on start up/dumpin fuel and your runnin ngk's. then the ngk's are done !!! ngk's don't take well to raw fuel, soon as there wet there fouled and normally will not clean out.
i used to own a motorcyle shop & all i used was ngk's. once they were fouled when tuning a bike , thrown out and new one installed due to their short "wet" life....
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Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
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South Jersey Racecraft
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11-23-2009, 12:37 AM
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#56
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Join Date: Feb 2009
Location: bridgewater
Posts: 868
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i remeber him saying somewhere he doesnt have ngk's but im most likely wrong, i wanna say he had autolite for some reason?
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Quote:
Originally Posted by BigAls87Z28
its an ongoing joke between the Geo Storm crew and the Sebring coupe team.
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bolt-ons and a bed n' breakfast
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11-23-2009, 03:41 PM
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#57
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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could be the tune or the rockers, sounds like it could be vac or spark related. Stock fuel pressure should be fine.
Also with the car running spray some carb cleaner around the intake, if the idle changes you've found a vac leak.
What size injectors are you running?
What size throttle body?
If you are running a 58Mm or mono then you are going to need to do the air mod, it's very rare that they don't need it. Also, for either of these TBs you need to drop the TPS voltage down to .57-.62 for the car to idle properly.
How big is the cam? big cams normally need a bit higher idle. My cam is 232/236 @ 114LSA and idle is 900rpms, but sounds like it's at 600!
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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11-23-2009, 03:53 PM
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#58
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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236/242 580intake 541exhaust 110lsa
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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11-23-2009, 04:03 PM
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#59
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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tuner was supposed to set it at 900, 42lbs, and 58mm tb.
i was thinkin bout checkin for vac leak too but it doesn't sound like a big one, like you don't hear that sucking sound.
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11-23-2009, 05:17 PM
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#60
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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yea i will check for vac leak when time comes... i am running ngk iridiums... i guess ill pull them to see what they look like... its raining today so im not going out there... hey pampered when you say the "air mod" is this what featherburner suggested also by drilling the IAC port out and blocking the back off...? im also going to pull the pcm out to make sure there is no bent pins or anything when it connects... im still going to drain the gas also...
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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11-23-2009, 06:12 PM
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#61
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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Do you have the stock TB to try instead of the 58mm? Which 58 mm do you have?
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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11-23-2009, 06:44 PM
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#62
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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summit brand....
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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11-23-2009, 06:49 PM
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#63
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Yes that's the mod to the TB.
__________________
93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 11-23-2009 at 06:50 PM.
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