wont start

[snowdriver]

well went to town today and everything running perfectly,come home shut it off,went inside for a few then came out to move it and it will not start,let it cool,still wont start, fuel pump and relay are new,have not pulled codes yet,will tackle this tomorrow after work,but in the back of my mind i am thinking the coolant temp. sensor may have gone tits up,any other ideas?? keep you posted on what i find

 

[454Sub]

Im assuming it cranks over. CT sensor being bad will still let it run, just like crap. Its either a spark problem, or a fuel problem. Pull the airfilter off and see if the injectors are spraying, if they are, its a spark issue.

 

[ktmoutfront]

I'm not seeing a year or any specs for the truck. And like he ^^^^^^ said, is it cranking?

 

[snowdriver]

got it fixed,and it was a bad ct sensor,this is actually the second rig ive had that this happened ,one was a 1990 suburban,and this recent one is a 1990 blazer,all better now,and the new sensor was just 12 bucks,oh and yes it would crank over just fine,would not start

 

[454Sub]

Very strange. Mine would start both with a bad one and one not hooked up. Just a thought but the ECM grounds right there, give that a checking out.

 

[snowdriver]

when i put the new one in and had it running i went ahead and unplugged it while running and ran really bad,shut it off and would not restart till i plugeed it back in,and everything is good now,in fact it starts better now than it has i awile