3.8L V-8 eater
Well-Known Member
- Joined
- Jul 22, 2006
Have you checked your fuel pressure with vac line off the regulator?
New 3.5" maf w/ translator and runs worse???please HELP!
- Thread starter tscruggs
- Start date
Jerryl
Tall Unvaccinated Chinese Guy
- Joined
- Dec 14, 2004
True.
Jerryl
Tall Unvaccinated Chinese Guy
- Joined
- Dec 14, 2004
I stand corrected.True.
Pronto
Believe nothing you hear and half of what you see.
- Joined
- Dec 9, 2002
No wonder it won't run right. Try it at 43 line off.
48 is high, sure, but it should make it run horribly....
so.. why is it so high, new fuel pump, regulator? what are you measuring it with (some of the cheap fuel pressure gauges are not so great)
anyway. what did you change from (chip / MAF, etc....) perhaps taking a step or 2 backwards to see what is happening.
check your bat volts on the scanmaster (you added the field fix module) I wonder if that is related.
what is your BLM at idle? the TT chips learn the idle fueling and then switch to open loop. this may need to be redone (reset the ecm, then go for a short drive)
Bob
so.. why is it so high, new fuel pump, regulator? what are you measuring it with (some of the cheap fuel pressure gauges are not so great)
anyway. what did you change from (chip / MAF, etc....) perhaps taking a step or 2 backwards to see what is happening.
check your bat volts on the scanmaster (you added the field fix module) I wonder if that is related.
what is your BLM at idle? the TT chips learn the idle fueling and then switch to open loop. this may need to be redone (reset the ecm, then go for a short drive)
Bob
Reset fuel pressure to 42#... Runs ok idles like crap....won't even stay running.....have had this problem whenever intake temp reaches 165 or higher ever since engine was rebuilt...mechanic said he was stumped....what to try next
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3.8L V-8 eater
Well-Known Member
- Joined
- Jul 22, 2006
Have you checked the plugs....Running it so fat at idle may have fouled them out some
Do you have dual fans? Is your cooling fan blowing across your air filter? What kind of intake setup do you have? Possible fan wash issue.. You said it runs like crap when it warms up, exactly when the fan turns on... I've had this problem before and ran like crap, couldn't go wot. Reinstalled my cold air kit with the filter behind the bumper and problem solved.
Jerryl
Tall Unvaccinated Chinese Guy
- Joined
- Dec 14, 2004
Good point.
- Joined
- May 28, 2001
Since the issue has been there since the "rebuild", I'd suggest you re-install the stock parts and fix the issue, B4 adding more possibilities to the mix.......
Damn dog. Get better soon! Thoughts and prayers brother.
Out of hospital....back to doctors though....getting infectious disease involved again....sick from complications from a rare ecoli in Nola after Katrina.....anyhow...spark plugs were bad...changed them...car idles but still tends to flood out especially on tip in during acceleration and braking .... What to try next?
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GNONYX
Well-Known Member
- Joined
- Oct 16, 2009
Is it possible to give us the Scanmaster display readings?
You might want to remove the IAC from the housing and clean any carbon or gum off the tip of the plunger and clean the seat as well.
once you clean it follow these instructions:
http://www.vortexbuicks-etc.com/basics.htm#IAC (Idle Air Control) Adjustment
and this one since these adjustments work together
http://www.vortexbuicks-etc.com/basics.htm#Throttle Position Sensor Adjustment
You might want to remove the IAC from the housing and clean any carbon or gum off the tip of the plunger and clean the seat as well.
once you clean it follow these instructions:
http://www.vortexbuicks-etc.com/basics.htm#IAC (Idle Air Control) Adjustment
and this one since these adjustments work together
http://www.vortexbuicks-etc.com/basics.htm#Throttle Position Sensor Adjustment
