Starts then immediately dies...
#1
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Car: Used to be an '87 IROC
Engine: 5.7l TPI
Transmission: 700R4
Axle/Gears: 3:23?
Starts then immediately dies...
I'm now running the ARAP bin (with close to stock '87 spark table) and the startup behavior is different - not good. (Yes, I did pull the crank fuse.)
It fires right up, but immediately dies. On the second startup, it works fine. It does like this about half the time.
What parameter should I look at to adjust this out? The IAC park counts are waaay lower than my old chip. Would that be a good starting point? I kinda suspect this because sometimes the engine "catches" just before dying, just as if the IAC opened up just in time.
Also, I would like to get my hands on a stock '89 bin for comparison to the ARAP. Can someone direct me to (or send me) one?
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'87 IROC 5.7l TPI - original owner!
It fires right up, but immediately dies. On the second startup, it works fine. It does like this about half the time.
What parameter should I look at to adjust this out? The IAC park counts are waaay lower than my old chip. Would that be a good starting point? I kinda suspect this because sometimes the engine "catches" just before dying, just as if the IAC opened up just in time.
Also, I would like to get my hands on a stock '89 bin for comparison to the ARAP. Can someone direct me to (or send me) one?
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'87 IROC 5.7l TPI - original owner!
#2
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What does your car consist of(mechanically)? The chip may be too much for you. If you have a 305, you could add and subtract stuff from an 89 305 auto or manual tranny chip.
Personally i started with 89 vette 6speed chip(apyp.bin). Depending on what you have, it may work better(if you have a 350/manual).
Oh and did you unplug the cold start injector?
Brendan
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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here
Personally i started with 89 vette 6speed chip(apyp.bin). Depending on what you have, it may work better(if you have a 350/manual).
Oh and did you unplug the cold start injector?
Brendan
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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here
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Car: '87 Camaro IROC-Z
Engine: 385 HSR
Transmission: 700R4
Axle/Gears: 3.42 posi
I would raise the IAC park position since that's what the problem seems to be. Maybe bump them up 10-20 counts, then see if the problem goes away. If not, try another 10-20 counts and re-test.
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Greg Westphal
'87 IROC 305TPI/A4
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Greg Westphal
'87 IROC 305TPI/A4
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Car: Used to be an '87 IROC
Engine: 5.7l TPI
Transmission: 700R4
Axle/Gears: 3:23?
I bumped the counts by 16.7% (one sixth). This made no difference. Funny thing is, it always fires instantly on the second attempt. Why do you suppose that is?
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'87 IROC 5.7l TPI - original owner!
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'87 IROC 5.7l TPI - original owner!
#5
Did you readjust your IAC & TPS? When you removed your chip (and/or disconnected the battery), you removed any saved values. Readjust your IAC following the procedure in the FAQ and then see what it does. I have found that many people forget to do this, or do it incorrectly causing the startup and/or erratic idle problems.
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Car: Used to be an '87 IROC
Engine: 5.7l TPI
Transmission: 700R4
Axle/Gears: 3:23?
<font face="Verdana, Arial" size="2">Originally posted by Desert86Roc:
Did you readjust your IAC & TPS? When you removed your chip (and/or disconnected the battery), you removed any saved values. Readjust your IAC following the procedure in the FAQ and then see what it does. I have found that many people forget to do this, or do it incorrectly causing the startup and/or erratic idle problems.</font>
Did you readjust your IAC & TPS? When you removed your chip (and/or disconnected the battery), you removed any saved values. Readjust your IAC following the procedure in the FAQ and then see what it does. I have found that many people forget to do this, or do it incorrectly causing the startup and/or erratic idle problems.</font>
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