11-20-2009, 12:08 PM
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Need help with the new engine!!!
I've had the car running for awhile now but just haven't been running it because of completely redoing the body so its been setting for awhile. When I first start it up I have to keep bumping the gas to keep it running and after it starts to warm up it starts running ok but at a high idle ( like around 1000 rpm.) and never comes down even after its driven. Could it be the Idle Control Valve? Any ideas out there.........Thanks!
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94Z, 355CI, LT4 hot cam kit, LT4 Ported heads, LT4 intake, 58mm BBK throttle body, 32# injectors, Walbro 255LPH pump,BBK shorties, Ed Wright tune, 3.73 Richmond gears, TCI 4L60E trans. with 2800 TCI stall, Balanced, forged pistons, 4340 forged I-beam rods, ARP bolts through out, 4340 forged crank, with Canton valve covers, 
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11-20-2009, 02:55 PM
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The first thing I'd do is get a tune. If you're running pig rich in open loop (richer than normal), it might not want to run while cold, then runs a little better when it gets to closed loop mode. You can try resetting your IAC valve, it probably wouldn't hurt anything.
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"Think with your dipstick, Jimmy!" Click SIGPIC to go to Paulster2.com!  Paul J. - Cam Swap Cam Selection LT1 Cam Specs Cam Write-up Pinion angle help Head Flow Seafoam Howto Injector worksheet LT1 INFO Aftermarket Links 2009 HRPT
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11-20-2009, 03:11 PM
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Do you have the lt4 KM? roller rockers? also the stock tune will make the car run at 1000rpm without or tune, the othere thing it does sometimes is make it not want to idle, you have new injectors and a way to big throttle body, so i would say there is a few things it can be. i agree with paul a tune is need to run the correct way.
it could be the tps,iac,injectors dumping to much,tune
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Hello my name is TOM and my car is FROSTBITE!  95 Z28 383, Ported Heads,intake,cc306,crane springs,1.6rr,comp pushrods,Flame covers,lt4KM,Full MSD,NOS wet,58mm polished TB,SLP CAI,Low Alt,Mac headers,Flowmaster,Canton pan,melling pump,billet FPR,accell 42lb,Lakewood drag shocks,BMR Arm's,Hotchkis panhard ajust,moser axle,eaton locker,4.10,built 4l60e,2800stall,No Air!Smog!PS!Heater!Egr!Seats! Its all stock i swear
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11-20-2009, 05:08 PM
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Yeah Tom helped me out and you need to get the LT4KM if you have roller rockers like me.
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1996 Z28 Vert. M6 355 Wiseco forged pistons, GM hotcam, GM 1.6 Rockers, Polished and blended LT4 heads & Airgap intake port matched, 52mm TB, 30lb injectors, NGK TR5's, F-body Elbow and Moroso CAI, "Be Cool" radiator, 195* stat, Meziere electric water pump, 6qt pan with high volume pump, Pacestter long tubes and y-pipe, and Magnaflow catback. PCMforLess tune. DJ 
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11-20-2009, 05:39 PM
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Quote:
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94Z, 355CI, LT4 hot cam kit, LT4 Ported heads, LT4 intake, 58mm BBK throttle body, 32# injectors, Walbro 255LPH pump,BBK shorties, Ed Wright tune, 3.73 Richmond gears, TCI 4L60E trans. with 2800 TCI stall, Balanced, forged pistons, 4340 forged I-beam rods, ARP bolts through out, 4340 forged crank, with Canton valve covers,
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11-20-2009, 05:42 PM
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Quote:
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"Think with your dipstick, Jimmy!" Click SIGPIC to go to Paulster2.com! Paul J. - Cam Swap Cam Selection LT1 Cam Specs Cam Write-up Pinion angle help Head Flow Seafoam Howto Injector worksheet LT1 INFO Aftermarket Links 2009 HRPT
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11-20-2009, 05:50 PM
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Quote:
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94Z, 355CI, LT4 hot cam kit, LT4 Ported heads, LT4 intake, 58mm BBK throttle body, 32# injectors, Walbro 255LPH pump,BBK shorties, Ed Wright tune, 3.73 Richmond gears, TCI 4L60E trans. with 2800 TCI stall, Balanced, forged pistons, 4340 forged I-beam rods, ARP bolts through out, 4340 forged crank, with Canton valve covers,
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11-20-2009, 09:30 PM
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Probably need to set your TPS, and reset your ICM which you can read how to do this on redirect
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 Glenn 2010 Camaro Inferno Orange Metallic 2SSRS (Amber) 03 Envoy (Ebony) "Worry looks around, Sorry looks back, Faith looks up."
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11-20-2009, 11:24 PM
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With the reading that I have done, the TPS can be the cause of your high idle, and your stalling could be cause the IAC is not set correctly in the tune or it's going bad till it warms up.
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1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
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11-21-2009, 01:45 PM
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As i said before the tps,and iac should be tested, but if you have a tune or not you need the lt4 KM that takes tons of timing out if you dont have one and will cause exactly whats going on with your car. was it a mail order tune or a data tune used with real world data?
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Hello my name is TOM and my car is FROSTBITE! 95 Z28 383, Ported Heads,intake,cc306,crane springs,1.6rr,comp pushrods,Flame covers,lt4KM,Full MSD,NOS wet,58mm polished TB,SLP CAI,Low Alt,Mac headers,Flowmaster,Canton pan,melling pump,billet FPR,accell 42lb,Lakewood drag shocks,BMR Arm's,Hotchkis panhard ajust,moser axle,eaton locker,4.10,built 4l60e,2800stall,No Air!Smog!PS!Heater!Egr!Seats! Its all stock i swear
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11-21-2009, 02:05 PM
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Quote:
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94Z, 355CI, LT4 hot cam kit, LT4 Ported heads, LT4 intake, 58mm BBK throttle body, 32# injectors, Walbro 255LPH pump,BBK shorties, Ed Wright tune, 3.73 Richmond gears, TCI 4L60E trans. with 2800 TCI stall, Balanced, forged pistons, 4340 forged I-beam rods, ARP bolts through out, 4340 forged crank, with Canton valve covers,
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11-21-2009, 02:34 PM
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If you pull your computer out, there will be a little cover with two screws. Take out the screws and it will be under that cover. Just pinch the little tabs and pull it up.
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1996 Z28, OBD-I Conversion, SLP CAI, Hooker Super Comp Headers, Custom ORY, Custom Exhaust, 3.73's, It's Slow... For everyone asking about Gear RPO codes, here they are... Gu2 : Axle rear, 2.73 ratio, gu4 : Axle rear, 3.08 ratio, gu5 : Axle rear, 3.23 ratio, gu6 : Axle rear, 3.42 ratio Quote:
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11-21-2009, 02:37 PM
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Thats the Knock module? My burned chip took the place of that in my 93 and the one that was sittin where the burned chip is is now plugged into the burned chip. So I would have to plug the knock module into my chip? I figure I prolby need the knock module since my rockers are noisy
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93 z28 (sold) 99 z28 slp lid magnaflow exhaust 60ft-2.086 1/8-8.772@83 1/4-13.5@103
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11-21-2009, 02:44 PM
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Quote:
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94Z, 355CI, LT4 hot cam kit, LT4 Ported heads, LT4 intake, 58mm BBK throttle body, 32# injectors, Walbro 255LPH pump,BBK shorties, Ed Wright tune, 3.73 Richmond gears, TCI 4L60E trans. with 2800 TCI stall, Balanced, forged pistons, 4340 forged I-beam rods, ARP bolts through out, 4340 forged crank, with Canton valve covers,
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