Question about 1987 GMC Suburban
It only starts when I prime it by spraying something into the throttle body. Once running, it does pretty good in 1st & 2nd gears, but in 3rd, if I try to accelerate, it chokes down & dies. I have replaced: throttle body, a sensor on the side of the throttle body (I forgot the name of it), all spark plugs & wires, exhaust system (pipe, muffler, catalytic converter), fuel filter, & fuel pump. My transmission was rebuilt just a year or so before this problem started. Any help would be very appreciated.
What size engine do you have in it? And, how many miles on it?? Well, I guess it really doesn't matter. At first thought it sounds like you are experienceing a fuel problem, and changing the throttlebody didn't solve your problem. I would start by looking and checking my fuel delivery system. The fact that you had to spray gas into the throttlebody tells me that fuel is not getting there. I would start with the least expensive thing to fix first. Check your gas filters. These are often , OFTEN, overlooked as a sorce of problems, and are rarely changed and often overlooked, and are the problem alot of the time. If that dosen't cure your problem check your fuel pump. Make sure it is delivering the proper pressure. I would bet your problem would be solved, but if it's not then next I would check the electrical components of your fuel system.
Posted on May 12, 2009
It is located next to your throttlebody (like a small tube). CATALYTIC CONVERTER. A catalytic converter is a small unit located on the stock h-pipe that heats ... mufflers alone and have them welded into your stock exhaust system. ... Detonation is when the air fuel mixture ignites before the spark plug has fired.
(Engine Components d1987 Chevy Suburban 350 2wd not starting or runnin - 96tbp.gif.0 engine. Similar on 4.6L)
Posted on May 12, 2009
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Posted on Jan 02, 2017
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