To all Vortec 454 owners! Now my 97 is a Vortec 454/4L80E, just hit 203k.
It's all original, only thing i've replaced is spark plugs, filters and the water pump. Now lately i've noticed it's been running a little rough, a little less power, and it's been surging at idle...
The fuel pump, cap, rotor, and plug wires haven't been touched... i haven't had a chance to hook it up to the scanner... no SES light has EVER come on.. Anyone seen this? For 203k miles i'm pleased that i haven't had to do a whole lot of maintance on it..
My big issues is the loss of power, which isn't terrible, just makes it annoying because i wouldn't feel comfortable towing heavy with it right now, and the surging at idle, other than that the truck starts right up, warm and cold starts, and i've never had any issues.
It's all original, only thing i've replaced is spark plugs, filters and the water pump. Now lately i've noticed it's been running a little rough, a little less power, and it's been surging at idle...
The fuel pump, cap, rotor, and plug wires haven't been touched... i haven't had a chance to hook it up to the scanner... no SES light has EVER come on.. Anyone seen this? For 203k miles i'm pleased that i haven't had to do a whole lot of maintance on it..
My big issues is the loss of power, which isn't terrible, just makes it annoying because i wouldn't feel comfortable towing heavy with it right now, and the surging at idle, other than that the truck starts right up, warm and cold starts, and i've never had any issues.