after a long haiatis i have to check back in to ask what the heck is wrong with my new blazer

problem: will crank, but will not run for any amount of time unless i saw on the throttle to keep it running...

my guess is the TPS,....no vac leaks that we could see or hear

**EDIT**
new blazer is a 1991 with the 4.3 TBI 4x4 if that helps...

 

can anyone here help at all?.....

 

Id start with a fuel pressure diagnosis
Have you tested the fuel pressure by the fuel filter ?
the pressure should be no lower then 9 psi when the key is turned to on position

a bad tps would trigger a code do you have your ses light on?

 

where is the FP test port located?.....or will i have to make one?

and no...theres no service lights on...

fun fact....the fuel gage is stuck on over full

 

1st gen TBI blazers do not have a fuel pressure test port. I have a TBI fuel pressure test kit the I purchased that I would splice into the fuel line. I would tie in at the front frame where the fuel lines go through the front crossmember. Autozone might have a kit as part of their loan a tool program.

 

yup what he said ^^ i just got home =P

 

Ditto. And the gauge for your fuel spikes to full when the ground is rotted off. So have a look on top of your gastank for the loose wire and reground that beeoch so you can see how much juice you got.

 

finally got 'er running again....just had to replace this little seemingly insignificant connecting hose ....now she runs fine...

 

the pics sorta small what is it ?

 

its the very short connecting hose thats on the in-tank assembly. the one i replaced was desolving...

the circled part in the pic