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Post by vistillia on Jan 4, 2006 5:43:02 GMT -5
Hello all,
I just recently purchased a 1986 Ford F150 with automatic transmission and 151,900 miles on it. The question I have for now is, how do I tell what is the size and type of engine? I know it's a fuel injected V8, but it looks nothing like the pictures of the engine a 1986 according to the Haynes manul and to other 1986 F150 engines I've seen on the internet. Is there some way on the block to tell what kind of engine I have?
Thank-you for your help.
Tobi
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Post by DanD on Jan 4, 2006 6:54:06 GMT -5
If this pick-up still has the original engine you can use the VIN # to identify the engine.
The eighth digit is the engine code.
Y code, 300cu¡"/ 4.9Lt in-line 6 cylinder.
N code, 302cu¡"/ 5Lt Fuel Injected V8
H code, 351cu¡"/ 5.8Lt HO, 4Barrel Carb V8
L code, 460cu¡"/ 7.5Lt HO, 4 barrel Carb V8
1 code, 421cu¡"/ 6.9Lt Diesel V8
I think that's all of the different engines that were available back then but you never know what odd ball stuff you might find hiding under a Fords hood. LOL
Dan.
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Post by vistillia on Jan 4, 2006 7:53:40 GMT -5
Well accoring to the VIN I should have a 302cu¡"/ 5Lt Fuel Injected V8. THe biggest proplem I would like to fix right now is that the engine tends to stall at stops and occasonially when I take my foot off the gas to coast a bit before stopping. When it doesn't stall at a stop, the idle cycles erratically and rough. I have to feather the gas to try and keep it from eventually sputtering.
I already plan on changing the fuel filter, so what else should I try?
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Post by re-tired on Jan 4, 2006 8:41:59 GMT -5
you have a typical problem for fords. Try cleaning the throttle plate and the surrounding area. Use an old toothbrush and some throttleplate/carb cleaner. Spray into throttle bore while working the throttle by hand , scrub with brush where plate contacts bore . take for about 20min drive to clear everything . let us know how it does.
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Post by vistillia on Jan 8, 2006 0:01:22 GMT -5
The plate and surrounding area were carbon free, but I cleaned it just to make sure. There is no difference. The friend who I had helping me suggested that since it looks like it was recently tuned (new cap, wires, etc.) that I should get the timing checked. Does that sound right?
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Post by re-tired on Jan 8, 2006 1:07:29 GMT -5
sure i would check the timing. also i would remove the iac valve and clean it. if nothing found try driving with EGR valve vac hose off & plugged.
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Post by Tom Greenleaf on Jan 9, 2006 19:08:41 GMT -5
I've replaced quite a few idle speed motors on that vintage 5.0s in the car version which shouldn't be all that different. If you just watch it you should see it doing its thing. If it's almost going to stall it should hold the idle back up. Also at 20 years old check all the vacuum hoses and hose to PCV.
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