o1 blazer 4.3L high engine idle
#1
o1 blazer 4.3L high engine idle
to start I had a P0200 code and a P0304 code it would not run without bogging down and I could same gas at times.we found the wiring harness was melted fixed that. I replaced the fuel injectors, fuel pressure regulator, cleaned the throttle body,and put new upper intake gaskets. runs alot better. no gas smell and only bogs every once in awhile. Now I have a P0507 code I have replaced the iac cleaned where the iac fits into the throttle body but i still have the code and blazer wants to drive its self now. it idle at 920 to 980 in park and 800 in drive with foot on brake but when i take my foot off it takes a second or two but it will kick up to 1500-1800 rpms with out my foot on the gas when i push the brake its like your driving with both feet but it with come down to about 800 rpms. when put a scanner to it and its pass every test you can put it to. so i put a new tps just to see and still have the same issues and the same code p0507 please help i am out of ideas.