Notaduramax
Newbie
Hey guys, Ive used this forum in the past and have been able to find answers for what I need but I cant seem to figure out whats going on with my truck now so I finally joined up so I can post. So heres what I got. Back in december I bought a 1988 k1500 350 TBI. Drove it home an hour and a half with no issues. The truck ran great for about a month and then I started to notice that it wouldnt run quite right on the highway and would idle rough when I came off the highway until I shut the truck off. This would be accompanied by the SES light coming on. However, as soon as I would turn the truck off and back on, the SES light would be off and it would be back to running smooth. This makes it almoat impossible to scan the code to see whats wrong. After I noticed this I tried to stay off the highway as much as I could because it wouldnt do this driving through town. Well one night about 2 weeks ago I got on the highway and got off at the next exit to go to a friends house. As I got off the ramp, the truck started to idle horribly and made a very loud screeching sound. I immediatly pulled off the road and shut the truck off. I let it sit for a few minutes then tried to start it again. Starter tried to turn it over and then just started clicking. Called my buddy over and had him crank while I got under the truck and saw the starter arcing on itself. Ended up getting it towed home and pulled the starter. It was definitely toast so I purchased a new one as well as a new positive battery cable and installed them. Now when I try to start the truck I get nothing from the starter, not even clicks, but all lights and accesories work. Ive checked grounds, checked connection to new starter and they are all good and tight. Even when trying to jumpstart the truck I get nothing. I havent got the chance to get under it with a multimeter yet to see if I have power to the starter but I will as soon as I can. So I guess I have two questions. First, what might cause my engine to run fine around town but then start acting up at freeway speeds? And second, what might cause a no crank with a new starter when the old starter was indeed getting power. I appreciate any help yall can give I just need to get my truck out of the driveway already