Last night I pulled onto a road and gave it some gas, about a mile down the road I noticed a little roughness or a stumble. Pulled into where I was going and really noticed the roughness at idle. Wanted to idle in park around 500 rpm instead of 7-800. It almost feels like a cylinder is not firing, but there are no lights on so I'm assuming no codes.
It is an 05 LE with 92k miles. After spending a few hours searching the forum I started with a new ipdm relay, no difference. I had ordered plugs a few days ago anyway, will put them in over the weekend.
Starting is no problem, other than the engine stumbling everything seems fine. Under the hood there is no loud ticking or different sounds than normal. I've had this truck since almost new and have spent many hours working on minor things so I am very familiar with it.
I'm not driving it until I get it sorted out, I don't want to screw up the cats in case I do have unburnt fuel going through. The cats were replaced about 15k ago due to cracked manifolds and would rather not do it again.
Where else to look? Thanks!
It is an 05 LE with 92k miles. After spending a few hours searching the forum I started with a new ipdm relay, no difference. I had ordered plugs a few days ago anyway, will put them in over the weekend.
Starting is no problem, other than the engine stumbling everything seems fine. Under the hood there is no loud ticking or different sounds than normal. I've had this truck since almost new and have spent many hours working on minor things so I am very familiar with it.
I'm not driving it until I get it sorted out, I don't want to screw up the cats in case I do have unburnt fuel going through. The cats were replaced about 15k ago due to cracked manifolds and would rather not do it again.
Where else to look? Thanks!