Stumbling after cold start
11-09-2016, 01:09 PM
#1
Senior Member
Thread Starter
iTrader: (1)
Stumbling after cold start
Maybe someone can help me with this. It is more of an annoyance than anything else. Truck has always started just fine, never had a single problem with that. But for some reason, whenever starting a cold engine when sitting on an incline, when I go to take off, it feels as though the truck stumbles a bit. There are two to three quick surges, then the engine "catches up" and everything is fine.
It starts up fine, it idles fine, no rattle, no noise. Just when I drop it into drive after a cold start, I get a couple of quick surges when I first take off. It generally does not happen if I let the truck sit and warm up completely. Any ideas?
Truck is a 2013 XLT with a 3.5L ecoboost. I have a Full Race CAI and a Full Race catch can. Oil changed every 5,000 miles and new spark plugs every 15,000. I am also running an MPT 93 Performance Race tune. But the surging has always been there. Thanks in advance.
It starts up fine, it idles fine, no rattle, no noise. Just when I drop it into drive after a cold start, I get a couple of quick surges when I first take off. It generally does not happen if I let the truck sit and warm up completely. Any ideas?
Truck is a 2013 XLT with a 3.5L ecoboost. I have a Full Race CAI and a Full Race catch can. Oil changed every 5,000 miles and new spark plugs every 15,000. I am also running an MPT 93 Performance Race tune. But the surging has always been there. Thanks in advance.
11-11-2016, 10:40 AM
#3
Senior Member
I have a similar issue, only in my case for about 15 seconds the truck runs a little rough. After about 30 it runs and idles fine. I always figured I had the carbon build up issue (I have a 3.5l). But if I cold start it, and drop it in drive it does exactly what you are talking about. Incline, flat, doesn't matter.