Car Loping - PLEASE HELP!!!
Thread Starter
Racer
Joined: Dec 2006
Posts: 411
Likes: 0
From: Riverview Florida
Car Loping - PLEASE HELP!!!
I have a 99' A4 Coupe w/ 78K. The car lopes at idle with the A\C on low, I can not figure out why. Do you think a tune up will help? I was thinking about changing the plugs, wires, & the distributor cap. I am not an extremely savvy mechanic, but I have changed these items in the past on my other cars. I bought the car back in Dec. of 06 w/ 71K. Do I need a lift or ramps to get to my plugs? Or can I just open the hood and access them? She is my daily driver, so I would like to fix her as soon as possible. Please help me stop the lope.
Thank You,
VF007
Thank You,
VF007
Burning Brakes
Joined: Mar 2006
Posts: 1,195
Likes: 25
From: Tacoma WA
I have a 99' A4 Coupe w/ 78K. The car lopes at idle with the A\C on low, I can not figure out why. Do you think a tune up will help? I was thinking about changing the plugs, wires, & the distributor cap. I am not an extremely savvy mechanic, but I have changed these items in the past on my other cars. I bought the car back in Dec. of 06 w/ 71K. Do I need a lift or ramps to get to my plugs? Or can I just open the hood and access them? She is my daily driver, so I would like to fix her as soon as possible. Please help me stop the lope.
Thank You,
VF007
Thank You,
VF007
I'm no mechanic myself, but changing the plugs is pretty easy to do w/ the car on the ground, no jacks required. Just pop hood, pry off Fuel Rail Covers, and don't burn your hands on the exhaust...
Edit: You should do the wires while your at it too...
Is your DIC throwing any codes?
-Dan
Melting Slicks
Joined: Sep 2006
Posts: 2,041
Likes: 4
From: Rockford Illinois
I agree,I would change the plugs/wires. Make sure to check the gap on them, they should be set between 0.55/0.60 for Naturally aspirated cars.
I like to use the NGK TR55 plugs and a good set of MSD wires.
You can get all the plugs and wires form up top without even lifting the car. The rear plugs might take a few minutes on your first time, but after that it gets simple.
You might even want tot hink about getting some SeaFoam and cleaning out the motor before you swap plugs. That might help you out as well. Kill two birds with one stone.
I like to use the NGK TR55 plugs and a good set of MSD wires.
You can get all the plugs and wires form up top without even lifting the car. The rear plugs might take a few minutes on your first time, but after that it gets simple.
You might even want tot hink about getting some SeaFoam and cleaning out the motor before you swap plugs. That might help you out as well. Kill two birds with one stone.
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Bring it in to the shop & let us scan it first to where the problem is. You are real close and you wont be spending$ you don't need to. 
813-628-0080 www.RevXtreme.com
813-628-0080 www.RevXtreme.com
Melting Slicks
Joined: Sep 2006
Posts: 2,041
Likes: 4
From: Rockford Illinois
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Le Mans Master
Joined: Feb 2006
Posts: 5,488
Likes: 4
From: USA
I agree,I would change the plugs/wires. Make sure to check the gap on them, they should be set between 0.55/0.60 for Naturally aspirated cars.
I like to use the NGK TR55 plugs and a good set of MSD wires.
You might even want tot hink about getting some SeaFoam and cleaning out the motor before you swap plugs. That might help you out as well. Kill two birds with one stone.
I like to use the NGK TR55 plugs and a good set of MSD wires.
You might even want tot hink about getting some SeaFoam and cleaning out the motor before you swap plugs. That might help you out as well. Kill two birds with one stone.
SeaFoam that badboy and don't forget to change the oil.