im pulling code 23 and cant find what it is. also my blazer is stock and pretty guttless any tips on some quik power boost's. it needs more power bad and not to sure were to start and i want to put 411 gears in where is the best place to buy them i will install my self

 

Ask a auto parts store they should be able to tell you what the code is.

 

Code 23 is intake air sensor

 

What engine do you have? My 89 has a 4.3 and has decent power. The only mods are KN air filter, Injector Spacer, Adj. fuel pressure regulator, aftermarket CAT. Also mine is 2WD Auto.

 

i have the 5.7. i read the codes wrong it was a 32 erg fault. i changed the egr and checked all the vacume lines. i just dont know why it is so gutless. it has very poor acceleration. could this be the timing

 

My first off the wall guess would be plugged catalytic converter.

 

i think that is it but it was my uncles truck and he said it has always been week. i have a 88 silverado same 5.7 and it has power for days. i dont get it.

 

Okay, first off, you started 4 different threads concerning the same issue. Please read the Forum rules and you will see that double posting is a violation. I have combined your threads, so please keep everything in one thread and folks can follow what is happening.
You say you have a 5.7L engine in an '89 Blazer, but is it in a K5 (full size) Blazer or has it been swapped into a 1st Gen S-10 Blazer? Complete info about the vehicle will help.
Asking why a vehicle has no power is like asking why you can't throw a football well. We would need a lot more info concerning the symptoms (when it occurs, what you have tried to correct the problem, history of any other symptoms, etc.). How many miles are on the engine? How long since a complete tune-up? Have you done a compression test on the motor?

 

the truck runs fine other than being gutless. and the tps is new and the head gasket not blown. the truck trys to over heat when towing and has a stutter for a second when u mash the throttle down from a dead stop. it is slow getting up to speed. it will not do more than 45 40 mph with trailer up even a slight incline. and struggles to do 60 up hill with no load.

 

Can you please answer these questions from my previous post?