flooding?????
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TECH Resident
Joined: Aug 2002
Posts: 920
Likes: 0
From: TN
flooding????? I have had my headers for about 3 months, they are hooker lt, i put them on and have not tuned the car, besides for removing the cat codes. Now when i start it it feels like it is flooding a little, and has really **** throttle response at low rpm and under load, it did not use to do this. The other day i thorugh a maf high input code, I think my filter was to dirty so i ordered a holly cleaning kit and have not gotten it yet. Do you all think that might be my problem??? Or do you think it is just running really rich?? It only does it when it is cold and just started for the day or left to sit for a few hours. Other than that it runs fine.
<small>[ February 06, 2003, 09:23 AM: Message edited by: Boo Yeah ]</small>
<small>[ February 06, 2003, 09:23 AM: Message edited by: Boo Yeah ]</small>
Re: flooding????? I would focus on the MAF.
Make sure that it is clean, there are no intake leaks around the MAF.
If your car thinks the MAF is bunk it will kick over to speed density running. On a stock tune this mode works like crap on a modified car usually making it run pig rich.
You may want to check your LTerms as well. They will give you some direction as to the problem.
Make sure that it is clean, there are no intake leaks around the MAF.
If your car thinks the MAF is bunk it will kick over to speed density running. On a stock tune this mode works like crap on a modified car usually making it run pig rich.
You may want to check your LTerms as well. They will give you some direction as to the problem.
TECH Addict
Joined: Nov 2001
Posts: 2,207
Likes: 0
From: College Station, Tx
Re: flooding????? The MAF code makes me suspect the MAF also - do you have a stock unit you can swap back in it's place (or can you borrow one from someone)?
Do you have a scan tool (autotap/ease/efilive, etc?) if so can you log your B1S1/B2S1/MAF/MAP/L-trim(1/2)/S-trim/Advance(1/2)/RPM/TPS for us?
Thanks,
Chris Bennight
Do you have a scan tool (autotap/ease/efilive, etc?) if so can you log your B1S1/B2S1/MAF/MAP/L-trim(1/2)/S-trim/Advance(1/2)/RPM/TPS for us?
Thanks,
Chris Bennight
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On The Tree
Joined: Apr 2002
Posts: 112
Likes: 0
From: Ottawa, ON
Re: flooding????? This is a long shot but I had a problem last summer with hot engine starting. You had to crank for a long time with the gas pedal to the floor before it would start. When started it behaved just like a flooded engine (choke on) until it went into closed loop and even then it was a bit lazy. No codes ever set.
I found the problem to be the engine coolant temperature sensor. The FSM states that on initial start after sitting overnight the AIT and the ECT sensors should be within 5 degrees. I was exactly 5 degrees, so I figured it should be OK, right.
Wrong. I swapped out the AIT sensor with another that I had in stock and it gave me the same readings and driveability issues so I went to the dealer and picked up an ECT sensor. The temperatures are now within 2 degrees. Usually 1 degree.
Because of the temperature difference the PCM was giving the engine "fuel enrichment" when there was no need for it.
That solved the problem. The engine has worked flawlessly since.
<small>[ February 17, 2003, 07:31 PM: Message edited by: LS1 PWRD ]</small>
I found the problem to be the engine coolant temperature sensor. The FSM states that on initial start after sitting overnight the AIT and the ECT sensors should be within 5 degrees. I was exactly 5 degrees, so I figured it should be OK, right.
Wrong. I swapped out the AIT sensor with another that I had in stock and it gave me the same readings and driveability issues so I went to the dealer and picked up an ECT sensor. The temperatures are now within 2 degrees. Usually 1 degree.
Because of the temperature difference the PCM was giving the engine "fuel enrichment" when there was no need for it.
That solved the problem. The engine has worked flawlessly since.
<small>[ February 17, 2003, 07:31 PM: Message edited by: LS1 PWRD ]</small>
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