My blazer is doing something wrong. when I take for the first time in the day it like has trouble going forward when I press on the gas as if it was on 4x4low and it jerks. but when the car is lets say hot it's ok. waht could be doing that??

lost in the woods.

 

Check the basics first starting with the trans fluid. Good luck and keep us posted.

 

What year blazer?
Could be the trans fluid as daddio said, filter. Could be the MAF, TPS, dirty air filter, EGR, 02 sensor/s, bad/clogged cat, rear diff.......

 

it's a 1998 rebuilt I put regular oil in the "différenciel" instead of syntetic could that do anything???
it's really weird it only jerks off in the morning.

 

Regular oil as in motor oil or gear oil?

 

I was wondering that too... but I can't help but to stutter as I read

 

Haha I totally missed the word "off"!! I'm laughing so hard right now.

 

oil for the differncielle it's a big black container between the 2 weels in the back

 

*chuckles* Jerks off...


Anyways, We are aware of what the differential is, but what we are confused about, is did you use differential oil, or did you put in motor oil in your differential?

 

Might sounds kind of crazy but mine was doing the same sort of thing. Turns out it was leaking gas at the fuel filter. It was hesitant for the first drive of the day because there was very little pressure in the fuel line. Probably not your issue but I'm just saying it could be many many things.