I have a 95 Blazer with 122,000 miles. A few days ago, I noticed my
Blazer had low power on highways and going up hills. It would drive
fine after sitting for a long period of time but after driving a few
miles it had diffulty accelerating. Two days ago I had the fuel
filter changed and it helped a little but it still wasn't accelerating
properly. It idles fine.
This morning, on my way to work, the problem got worse. From a stop,
I had to push the gas to almost full throttle to get it going and it
would hesitate pretty badly until I got the truck moving again. This
was the situation for about 8 miles. I get about three miles from my
job, and the truck started accelerating pretty good again but now I
get a hissing/windy sound when I accelerate. My guess would be a
leaky hose or vacuum somewhere but I'm not sure. At this point I
noticed my braking was a little more difficult. Does anyone know what
the problem could be? Are there any simple solutions I could try
before taking it to a mechanic.
Here are some things I had replaced since I owned the vehicle. 3.5
Fuel filter, 2 days ago.
EGR Valve, twice last time 6 mo/~9K ago
Plugs and wires, ~30K ago
Fuel Injector, ~30K ago
Exhaust system (not including the CAT), 10/mos/~15K ago