Hey there everone! I have a 1986 GMC suburban with the 7.4 liter motor. The choke is either stuck open or it takes almost an hour of running (210*) to finally turn off. I saw a reference to a choke plate in a previous post is this the best place to start hitting things with my hammer? Thanks in advance for your help
Post by 19_Chevelle_69 on May 2, 2005 21:24:44 GMT -5
Welcome to the site!
The electric choke stats eventually go bad, and can cause different symptoms like that. They either stick open from a weak spring, or the mounting surface gets corroded, and the stat has no ground for the bimetal to heat up and open.
It was the choke stat !!!! the spring was shot. When I compared it to the replacement part it was obvious that the spring had just lost all of its "spring" I used a circut tester and verified it was getting a good ground before pulling it and then replaced the stat.Thank you. p.s. I left the bottom rivet in and just drilled out the 2 top rivets because the valve cover was in my way and it looked like a mess to pull the housing off of the carb... as in little linkage and choke pieces and other fun stuff. The only problem is that I had to spin the retainer clip at the bottom rivet 180* to get the new one in. I can't rotate it more than 90* back around but it seems to be holding fine. If it acts up again I know where to look first. Thank you again! Dave