R Walling Posted April 22, 2020 Share Posted April 22, 2020 Earlier I posted that my 84 Ferio would not start after a few years sleep. I thought it was an injector problem and spent a lot of time checking out the electric system. Then someone suggested that I check out the fuel system. Well the problem boiled down to the fuel pump was eaten up by E10 gasoline. All the rubber parts turned to mush. I installed a new pump and got it running now. At first it did not want to take a higher rpm, but after a few starts and REINSTALLING the air cleaner, it runs well now. I don't know whether the computer sorted out the fuel mixture after a few starts or the vacuum line that goes to the air cleaner was the problem. (even though I had plugged it up to prevent a leak) I did note though, that a "Box with vacuum lines" that attaches to the side of the air cleaner seamed to make a difference if it was laying on its side, or vertical. 1 Link to comment Share on other sites More sharing options...
Guest Posted April 22, 2020 Share Posted April 22, 2020 "Box with vacuum lines" turned out to be the map sensor, which after scanning the computer, it showed a fault in the sensor. I ordered a new one, tomorrowow will tell? Link to comment Share on other sites More sharing options...
padgett Posted April 23, 2020 Share Posted April 23, 2020 Just think, next year will be the 40th anniversary of the GM Computer Command Control. Wonder how many have a scanner that can read the early ALDL. 1 Link to comment Share on other sites More sharing options...
Larry Schramm Posted April 23, 2020 Share Posted April 23, 2020 (edited) 12 hours ago, padgett said: Just think, next year will be the 40th anniversary of the GM Computer Command Control. Wonder how many have a scanner that can read the early ALDL. Actually, the first CCC cars were 1979-1/2. 1980 was the first full year GM came out with the computer cars unless there were some engines that did not have it in 1980 but I am not aware of any. I was doing some evaluation on the '79-1/2 cars when I was at Buick and they were just coming out. Edited April 23, 2020 by Larry Schramm (see edit history) Link to comment Share on other sites More sharing options...
Guest Posted April 24, 2020 Share Posted April 24, 2020 Well after I installed the MAP sensor. the code went away but now I have a code for the Idle air control. Its on order, I will be back with the new results in 4 or 5 days, I hope. Link to comment Share on other sites More sharing options...
padgett Posted April 24, 2020 Share Posted April 24, 2020 IACs can usually be cleaned if gunked up. Link to comment Share on other sites More sharing options...
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