Surges When Driving

[George.501Blues]

Need some help here. I brought my truck in because I had a light on the dash which turned out to be a bad Mass Air Flow (MAF) part MF8411. After the shop replaced the sensor they had problems with the truck not running correctly. They replaced it with another MAF. When I picked it up I noticed the truck surged when I was driving (it did not do this before). I can drive it but it doesn't run smoothly when I am driving it. It appears to idle just fine. I took it back to the shop and they couldn't figure out why it was having problems. No new codes are being thrown. The mechanic indicated it could be a bad EGR value. So the question is why is it surging now after I replaced the MAF sensor? The good news is there is no light on the dash so the MAF appears to be issue. What else could cause the surging? I read on this site it could be EGR value and it could be clogged. How can I test it? Where is the value located? Any help would be greatly appreciated. Thanks in advance.

 

It is annoying to bring in a vehicle to get repaired only to get back worse than when you brought it in.

[03CREWCAB]

What engine is in your truck?

[Prokopchuk_9]

by value you mean valve right?

if it didnt do it before, then you changed a maf sensor now its runnin like crap. take it back tell them to figure it out. id be freakin out on whoever screwed with it. you paid someone to charge you money to change a part that didnt fix anything. id be choked