i own a 96 blazer 4x4 and am having some problems need some help. first problem is for about 15 to 20 minutes the blazer runs great but then doesnt want to accelerate. it doesnt want to go over 2000 rpm sometimes it takes up to 45 minutes to acted up the check engine light comes and goes but when i got it checked it came up with low voltage, misfires in multiple cylinders, catylatic converter, both oxygen sensor and manual transfer case. the cat and o2s are new from the car dealer. i changed plugs and it helped somewhat do u think that if i change wires and cap it will stop doing this?

second thing is my low beams are extremely dim and when i try to turn on high beems nothing happens no light on dash or outside. also with this there is no 4 ways this all worked when i got the vehicle.

last thing is i got a vibration through the entire vehicle when i hit about 55 or more doesnt always happen but fore the most part it does. any advice would help
i gave up my ford probe for this blazer and have had nothing but problems with it.

 

Sounds like a fuel problem IMHO, but I'm not a mechanic. Seems like you're either getting too much fuel in the motor, or not enough. causing it to misfire and possibly detonate. Maybe run a fuel injector cleaner through it? fuel pressure test on your fuel pump? And maybe get an alternator check lol. Seems to cover the three areas it sounds like to me. But I did have about that same problem in my cavalier, and my fuel pump was bad, but so was my ignition system. So plugs, ignition coil, and a fuel pump later, I was runnin fine..

 

Change your distributor cap and rotor, along with new plugs. If your truck is misfiring, chances are you're getting moisture somewhere in the ignition.

For the headlights, do you have the sealed beam bulbs, or the composite bulbs? The sealed beams suck, which is why they'd be so dim. As for the hi's not working, that filiment in the bulb might be blown, or you might have chaffing on the wires.

For your vibration... when was the last time the tires were balanced?

 

ok the vibration turned out to be u joints which i found out when it fell out of truck. but i was told by many people that my fuel pump is no good it works to start but doesnt get enough to do anything. could this be it? and the headlights are sealed but it is a headlight switch got it fixed now so any advice on the fuel pump would help and if anyone would know will a fuel pump from a 98 blazer work in mine b/cx i know where i can get one pretty cheap someone wrecked theres and the truck only has like 40000 miles on it. thank you

 

'98 pump should work when you check for parts sites they list 1996-2004...

 

no it turns out the pump will interchange but the sending unit wont and i cant figure out how to get it the pump out of the unit. anyone know how to i would appreciate it.