Anyone ever figure out hot start issues?
06-22-2005, 07:29 AM
#2
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have you tried lowering your cranking ve table. And take a look at the after start enrichment table. The PCM adds a lot of fuel for a specififed amount of time before leaning the car out. The after start enrichment tables will have the car running close to 10:1 when it is first started
06-22-2005, 11:03 AM
#4
I had already fixed it prior to posting this just wanted to see some other responses before I posted the fix. I took the afterstart fuel enrichment vs ECT and 0'd everything above 120degrees. Hot start adding fuel to get to 10:0.1 will make the car a pain to start.
Phil
Phil
06-22-2005, 11:33 AM
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Originally Posted by Phil99vette
I had already fixed it prior to posting this just wanted to see some other responses before I posted the fix. I took the afterstart fuel enrichment vs ECT and 0'd everything above 120degrees. Hot start adding fuel to get to 10:0.1 will make the car a pain to start.
Phil
Phil
Yeah that table made my life hell aslo
Edit that table seems kinda backwards to be. I mean for and allready hot engine you should need little to no enrichment after you start the car. THe fuel is capable of vaporizing on its onw with those engie temps. THey should be 0'd from the factory..... I can understand -40-68* but all the way to 284 is ridiculous.
Last edited by HumpinSS; 06-22-2005 at 11:56 AM.
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06-22-2005, 01:31 PM
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Originally Posted by SmokingWS6
How much did you multiply the cranking ve table by?
Under afterstart enrichment did you zero out the three Decay tables above 120 degrees or just the initial adder vs. etc? I'm working on a getting a large cam to hotstart.
Under afterstart enrichment did you zero out the three Decay tables above 120 degrees or just the initial adder vs. etc? I'm working on a getting a large cam to hotstart.
I multiplied mine by .90 until it looked somewhat similar to my primary ve table
No I left the decays alone i just 0'd out the erichment tables for 86* and up
05-25-2014, 11:09 AM
#12
get the tune correct and it will start fine.
Cranking VE, Afterstart Enrichment, Cranking timing, OLFA, Idle Airflow tables, IAC tables
you cant except a car with any mods to Just fire right up with any of these tables being set to stock values
05-25-2014, 11:36 PM
#13
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IAT relocation helped me a lot, and others. Speed density
setups particularly, need reasonable idea of the air temp
(prime factor in the gas-law mass calculation). Hotter
IAT reading than real, gives you low air mass thus low fuel
shot, so fights the startup enrichment "choke" while
simultaneously pulling timing. Neither helps the motor to
catch.
setups particularly, need reasonable idea of the air temp
(prime factor in the gas-law mass calculation). Hotter
IAT reading than real, gives you low air mass thus low fuel
shot, so fights the startup enrichment "choke" while
simultaneously pulling timing. Neither helps the motor to
catch.
