Low speed stumble
Thread Starter
Intermediate
Joined: Dec 2022
Posts: 42
Likes: 11
From: Rockport Tx
Low speed stumble
My new to me has a low speed stumble at idle and into 1st gear. It doesn’t do it all the time. Today it was noticeable and after a pit stop for a burger it didn’t do it for the last coupe of miles. It’s a 06 with 30k miles. I bought it 5 months ago with 26,600 miles and dealer said plugs and map sensor was changed. I now have my doubts. I do not have a check engine light and have run techtron through it. I assume coil packs and wires are original. Any thoughts other than starting over
Melting Slicks
Joined: Apr 2019
Posts: 2,518
Likes: 1,170
From: Northern Wisconsin
Sounds like the dealer was aware of the problem and tried to fix it with quick change of plugs and MAP sensor. When that didn't do it, they gave up before spending more money on it. The cause of your issue is probably something minor, but it just takes some time to do some diagnostics in order to find it. I think your best bet would be to find a good diagnostic shop in your area before you start spending money replacing parts that don't help.
Race Director
Joined: Jul 2005
Posts: 12,056
Likes: 3,589
From: Central MO
Clean the MAF sensor AND throttle body. Especially throttle body. Dirt/carbon buildup around the throttle butterfly edges many times leads to rough idle/low throttle stumbling. Also make sure the plug wires are fully seated on the coil packs and plugs; OEM wires seem prone to stubborn seating. It's pretty inexpensive to try these items.
