Marcos Beltran
OBS Enthusiast
Well i put this truck on tbe back burner for about 2 months now and figured let me give it another try and get this truck running. The truck would crank but wouldnt start. Ended up this time being the the gas hose between the fuel sending unit and pump ruptured. Easy fix fit or so i thought. The thing is the hose was less than a couple weeks old at the time. Well replaced it and truck ran for the first time in 2 months. Ran for 2 days and hose ruptured again. Replaced it again and now i realized that im getting an erractic/ high idle and this could be the reason for all the times the hose got damaged. It idles anywhere from 1000 to 1300 rpm when cold starting, sometimes and doesnt come down. Then sometimes it will be from 900 to 1100 rpm. If lm lucky when it warms up if will idle nicely at 650 rpm but if i put it in gear it sill rise to 800 to 850 rpm with my foot on the brake. If i shut it off and turn it back on it will idle at 1000 rpm and wont come down. Its all over the damn place and no i dont have a vacuum leak. I have a homemade smoke tester and no leaks. Replace tps and idle air control valve. Helped a little bit but still has the problem. Could the IAT sensor be the culprit? What else controls the idle? Map sensor was cleaned a while back and replaced with a known working one from a buddies truck and had no effect so put the old one back on. O2 sensors? What about the computer? Speed sensor?
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