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When I start the car up in the morning it runs rough. According to my scantool the A/F ratio is 7:6 every 12 seconds or so it will increase a number to 7:7 7:8... until it gets to 7:15 when it is fully warmed up. I know my IAC valve is sluggish, could this be the problem? Not letting enough air in maybe?? What could it be? Car has no other problems and runs great otherwise.
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1993 Pontiac Firebird 3.4L V6 A4<br />F41 RPO suspension option<br />119K miles<br />Fastchip<br />K&N \"Filtercharged\"<br />Airbox cuttout CAI<br />ASP underdrive pulleys<br />Pacesetter Headers<br />Flowmaster 80 Series 2.75 cat-back<br />MangaFlow Hi-Flow Cat<br />Corvette Servo<br />16.4 @ 81 MPH -
This is normal......don't even trip about it. If it's running rough on start-up...maybe check your fuel filter, but it's normal for it to run rich when you initally start it up..especially when it's cold. (the car that is, not the weather)Nitrous is like a hot chick with an STD....you wanna hit it, but you\'re affraid of the consequences...<br /><br /> <a href=\"http://www.cardomain.com/member_pages/view_page.pl?page_id=244935\" target=\"_blank\">http://www.cardomain.com/member_pages/view_page.pl?page_id=244935</a> -
Just me it's not suppose to run THAT rich. The car feels like it's misfireing if you try to barely rev the engine. It didn't used to be like that. Anyway, i'm reseting the ECm to see if that helps. Fuel Filter is new.1993 Pontiac Firebird 3.4L V6 A4<br />F41 RPO suspension option<br />119K miles<br />Fastchip<br />K&N \"Filtercharged\"<br />Airbox cuttout CAI<br />ASP underdrive pulleys<br />Pacesetter Headers<br />Flowmaster 80 Series 2.75 cat-back<br />MangaFlow Hi-Flow Cat<br />Corvette Servo<br />16.4 @ 81 MPHComment
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Well then it sounds like you have a different problem. The infamous misfire issue that just about EVERYONE on here has experienced. Check the plugs and wires. Resetting the ECU isn't going to help. If it's giving symptoms like it's flooding when you give it gas....choking, coughing....then it's definately what you said. A "misfire".... Don't bother spending money getting the codes pulled, just take the time to change out the plugs and pick yourself up a set of wires from Autozone for around $40. If you haven't already, upgrade to 8mm wires. Just be sure when you replace the wires that you route them exactly how they came off. I found out the hard way that routing them differently trying to avoid the heat from the manifolds somehow causes them to burn up quicker. Just one of those unexplainable things...Originally posted by BradC:
The car feels like it's misfireing if you try to barely rev the engine.Nitrous is like a hot chick with an STD....you wanna hit it, but you\'re affraid of the consequences...<br /><br /> <a href=\"http://www.cardomain.com/member_pages/view_page.pl?page_id=244935\" target=\"_blank\">http://www.cardomain.com/member_pages/view_page.pl?page_id=244935</a>Comment
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^What he said.^\'85 Z28, T-tops new LG4 and TH700<br />\'85 3.4L 5-speed<br />mods: <a href=\"http://www.cardomain.com/id/oil_pan_4\" target=\"_blank\">http://www.cardomain.com/id/oil_pan_4</a> the nitrous exhaust O2 safety, pg 3. <br />Areo space materal engineer wantabeComment
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There are no codes and the plugs and wires are fine. I reset the ECM and it helped a lot. Try it again tommorow. I have Spitfire plugs and 8mm Spiro pro wires. Have can the plugs and wires have any effect on flooding if it runs great otherwise?1993 Pontiac Firebird 3.4L V6 A4<br />F41 RPO suspension option<br />119K miles<br />Fastchip<br />K&N \"Filtercharged\"<br />Airbox cuttout CAI<br />ASP underdrive pulleys<br />Pacesetter Headers<br />Flowmaster 80 Series 2.75 cat-back<br />MangaFlow Hi-Flow Cat<br />Corvette Servo<br />16.4 @ 81 MPHComment
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