Alot of fuel smell at idle!!
10-02-2012, 09:38 PM
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Alot of fuel smell at idle!! I have been having alot of fuel vapors in the car lately at idle. So i checked the Datastream and here are some numbers. Idle 820-870 target is 820, TPS is .61, IAC steady at .57, Temp is 184, 02's bouncing from 3-700, Inj pulse 2.1L and 2.2R, INT between 118-132 both banks pretty steady never more than 2-4 points from each other sometimes equal, heres the big one BLM's 142L and 144R they go between 135-150, the same as the INT's pretty steady usually between 2-4 points from each other. Is this a tuning issue? Could any of this be connected to my rolling idle problem? How do i communicate this to my tunner? I have no way to do a datalog, since i dont have a computer. Hey anybody live in Washington State that can help me with a Log. Thanks Guys! Marc
10-02-2012, 10:08 PM
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Before you go too indepth did you check for any leaking in the evap system or an oring leaking on the fuel rail? If your possably burning too rich check for black smoke out the tail pipe when you rev it up. Just a few basics before you start reprogramming.
10-02-2012, 10:13 PM
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Leaking in the evap system? How would i go about checking that out? All vacuum lines to it are in tact and good. No fuel leaks in the Orings at the fuel rail...or anywhere on the motor, already checked that out. No black when i rev it. I had someone check it at the track. They said i had a small puff of black,(small) when i went to WOT. but i dont notice any when i drive it.
Last edited by FAD2BLK93; 10-02-2012 at 10:19 PM.
10-02-2012, 10:36 PM
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Check the Evap line that comes in from the fuel tank, and the lines that go to the purge soleniod and to the throttle body. Here's a view of the soleniod from shoebox's web site....
[URL="http://shbox.com/1/evap_sol.jpg"]http://shbox.com/1/evap_sol.jpg
[URL="http://shbox.com/1/evap_sol.jpg"]http://shbox.com/1/evap_sol.jpg
10-03-2012, 06:05 PM
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Bump...Any tunner guys out there? I would like to know more about the numbers before i start blaming PCMFORLESS and send it back, being very unhappy! Thanks
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10-03-2012, 09:48 PM
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02's are bouncing from 3-700ish. I will check regulator hose and report back. I have one ACDELCO 02 and a 20 dollar bosch that i installed recently. How would u know if they are bad if the numbers are bouncing like they are suppose to be doing? I know the numbers should be around 128, but if they are in the 140-150 are that would be super rich right? So what controls them to put them that high?
10-04-2012, 05:34 AM
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02's are bouncing from 3-700ish. I will check regulator hose and report back. I have one ACDELCO 02 and a 20 dollar bosch that i installed recently. How would u know if they are bad if the numbers are bouncing like they are suppose to be doing? I know the numbers should be around 128, but if they are in the 140-150 are that would be super rich right? So what controls them to put them that high?
I would also seriously consider ditching the Bosch O2. Coupling that with an AC Delco isn't a good idea since undoubtedly they will read differently.
Also, Bosch O2s are absolutely terrible.
10-04-2012, 07:52 AM
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I figured since they are bouncing it was working. I had both AC DELCOS for many years. But when i did the cam and heads one of them became stuck in the cast iron manifold, and omg it was stuck. I have the Fastbird heated 02 conversion kit. So i will be swapping it over this winter.
