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car bogs down after 3000rmp

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nicklesmack

10+ Year Contributor
71
0
Oct 16, 2009
phoenix, Arizona
Just got my car up after 8 months of hard work. It ran fine first few days but now I'm getting idle surge and she wont go past 3000rpm. Right around 4 grand it bogs down and it wont let me go any faster just replaced bov, maf and intake...... vacuum lines are good no boost leaks! Any one have any ideas ### help me
 
Yes I did check it p050 came up iac malfunction so I think that's the idle surge problem but could that be why I can't accelerate?
 
Yea that could be your idle surge but are you sure you dont have a bosst leak cause mine did the same and when i gave it a boost leak test i had a major boost leak in the stock intercooler...! Big hole...! After i fixed it it ran like a beast...! Are you running rich/lean?
 
I'm pretty sure no boost leak...... rich or lean I'm not sure I pulled the plugs they don't seem abnormal. I don't have a a/f meter
 
Your car is turbo right? I mean you have the mass air flow right? If its turbo then how is it possible that you dont have a air flow meter? If its a turbo do you atleast have a aftermarket boost gauge?
 
If I were you I would get a set of plug wires from a friends just to see. My plugs and plug wire were causing me all kinds of problems....
 
OK tryed plug wires no help either I have a cop set up..... both set up still wont let me accelerate could it be the iaccoca's affecting that to?
 
this sounds just like mine. I have no boost leaks either and I can't figure this problem out. Can someone please get this problem fixed?
 
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