Ok I have looked though alot of posts and Googled the heck out of this issue...
I have a 1989 s10 blazer 4x4 with a 4.3 TBI, Vin Z.
The issue is that it has a really rough idle and is surging in park and when i am stoped in drive, I can drive it but at red lights i have to put it in nuteral. I can smell too much fuel and it is puddeling up in the TB, Also just recently it is grinding when I start it (I think the started is going bad.) and when driving there is a lose in power like some one just flips a switch and says no more then the switch is fliped againg and it goes on down the road. things that have been replaced inclued
MAP Sensor Pigtail
Plugs and Wires
Engine and Tranny where replaced about 10 years ago and have less the 70,000 on them.
I am loss as to what the issues are caused by
but any help is greatly apperciated.
Tonight I took some time to look over things but being that Im not a machinic Im a bit confused, The vacuum hose that goes to the PCV Valve and TB was Wet? The TB vacuum port was full of juck and the pcv valve was nasty too. I cleaned both and still no help with issues. the valve cover is pretty full of stuff too. I was also looking at the EGR Control Solenoid and with the vacuum line that goes to the TB off the engine revs up high but smoother, Could my issue be a bad EGR Soleniod? I will look into the prices and maybe get one first of next week.