Ok so the other day I went on a trip out of town to visit a freind. Well my blazer ran fine all the way up there, but on the way back it acted up. I was driving and i hit a smaller hill I gave it some extra throttle and my turck kinda shaked for a sec but then stopped so I shrugged it off and kept going well the next hill I hit it really acted up my blazer downshifted and I went up the hill like normal well the hill got steeper so I had to give it more gas...well when I gave it more gas it bogged down...the more throttle I gave it the less power it had. but if I let off it would get more power. well It died about a mile later. after trying to start it it sounded like it was not getting fuel so I went and pushed the fuel pressure tester nozzle and it sprayed fuel...I did some tinkering for a few mins went in and hit the starter adn it started right up. so I started driving again went 10 miles and it died again...let it sit for a few mins hit the starter and it started right up. Well I was able to get home but the check engine light was on but not flashing. well before I could get it on a scanner the light went out. and it has been fine since. should I just consider it a fluke and move on or should I be worried?

 

Could be any number of things. You really should perform a fuel pressure test the next time it acts up.

You could also run through the normal tune up items (plugs, wires, cap, & rotor) as well as cleaning the MAF sensor, EGR valve, and throttle body (including the IAC valve & bore). You can test the TPS sensor for smooth increase from ~0.5V at idle to ~4.5V at wide open throttle and back down.

Another thing that comes to mind is an over heating coil and/or ICM. You used to be able to get them tested at a large number of autoparts stores, however, the ones that still do it are becoming more rare. It's worth a try to pull them and take them in. If you do find a store that can test these items, have them tested 10-15 times in quick succession to heat them up and mimic the temps while running under load.

*Moving to 2nd Gen Tech* - Technical questions belong in one of the tech sections.

 

Idk what to say here. It runs fine now...the light has popped on and off a few times. I got it on a scanner and a mas and o2 sensor codes came up. the o2 one doesnt worry me cause it does that from time to time. the mas I think is acting up over the K&N c.a.i. I put in. I plan to do alot of mateince it needs soon. plugs wires cap rotor fuel filter and a thremostat and a raditor flush

 

I would be VERY suspicious of the catalytic converter. Mileage? Ever done before although either of these questions are probably irrelevant. If you can duplicate the issues-then pull a forward o2 sensor now if better powerwise then whola. Plus the codes mentioned mimic a cat conv. issue. Jerry

 

I had almost the same symptoms last year on mine. Except mine didn't go away, it was hit and miss at first but then got worse and more frequent. I changed my mass air flow sensor, and my EGR, problem solved.
My code was also the Mass air flow.