95 blazer hesitation problem

[95BlazerS10]

I have a 95 Blazer S10 and it has a hesitation problem i fixed the exhaust madifold gasket leak and that didnt help. i put new o2 sensors on and that didnt help. i put new fuel filter on and that didnt help. it had a recent complete tune up. i had the fuel injection system cleaned out and that didnt work. i put new o2 sensors on again becuase some one told me that defective o2 sensors is common and the car ran fine for a little bit but started stalling out and hesitating agian. when you floor it it clears up a little bit. a code comes up every once in a while and it says something about manufacturing emessions control system. can anyone help or have any suggestions??

[MT-2500]

Originally Posted by 95BlazerS10

I have a 95 Blazer S10 and it has a hesitation problem i fixed the exhaust madifold gasket leak and that didnt help. i put new o2 sensors on and that didnt help. i put new fuel filter on and that didnt help. it had a recent complete tune up. i had the fuel injection system cleaned out and that didnt work. i put new o2 sensors on again becuase some one told me that defective o2 sensors is common and the car ran fine for a little bit but started stalling out and hesitating agian. when you floor it it clears up a little bit. a code comes up every once in a while and it says something about manufacturing emessions control system. can anyone help or have any suggestions??

Get it on a good engine capable scanner and get the code no and post it back.
Some auto parts places will also pull codes for free but do not by any suggested parts until you post back code no.
And remember a code does not say replace the sensor/part.
Check it out first.
MT

[95BlazerS10]

the engine code went off and it was on becuase of the exhaust manifold leak but now that is fixed.

[95BlazerS10]

But the car is still hesitating but the warmer it gets the worst it gets.

[MT-2500]

Originally Posted by 95BlazerS10

But the car is still hesitating but the warmer it gets the worst it gets.

Get it on a good engine capable scanner and get the code no and post it back.
Some auto parts places will also pull codes for free but do not by any suggested parts until you post back code no.
And remember a code does not say replace the sensor/part.

[burnchassis3]

I just went through this same issue..replaced O2 sensors with no change.
The problem was the MAF mass air flow meter.
You can do 2 things 1st to check to see if this is the trouble.....while the engine is running unplug the MAF and then try to drive it .
The meter is on the air intake from the air filter very easy to unplug sitting right on top.
This WILL cause the engine light to come on ,but no big deal.
If you leave it unplugged it will run fine without it (less MPG more power).
If it does not change performance while unplugged,thats not your issue.
Good luck
CS

Originally Posted by 95BlazerS10

I have a 95 Blazer S10 and it has a hesitation problem i fixed the exhaust madifold gasket leak and that didnt help. i put new o2 sensors on and that didnt help. i put new fuel filter on and that didnt help. it had a recent complete tune up. i had the fuel injection system cleaned out and that didnt work. i put new o2 sensors on again becuase some one told me that defective o2 sensors is common and the car ran fine for a little bit but started stalling out and hesitating agian. when you floor it it clears up a little bit. a code comes up every once in a while and it says something about manufacturing emessions control system. can anyone help or have any suggestions??

[95BlazerS10]

where is the maf located because theres only one sensor located on the intake and that is underneath in the beginning of the intake.

[BlazerLT]

Originally Posted by 95BlazerS10

where is the maf located because theres only one sensor located on the intake and that is underneath in the beginning of the intake.

There is no MAF on a 1995 seeing it is a speed density system.

What was done with the tuneup? what exactly was replaced?

[95BlazerS10]

spark plugs, wires, cap, o2 sensors, fuel filter, catallic converter, fuel pump, exhaust maniflold gasket,

[BlazerLT]

what about the rotor? and what plugs did you use?