Sticky choke?
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Cross-Country
Joined: Feb 2013
Posts: 85
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From: Gibsonville,NC
Sticky choke?
Okay guys, I have a 86 F150 lariat auto with the 302 EFI. And as of late when I crank it the choke sticks & I have to re crank it 6 or 8 times before it will idle on its own. Normally I wouldn't give a crap about this, but the wife doesn't want our son driving it like this. She seems to think it's unreliable and will leave him on the side of the road. So just to appease her could you guys give me some advice on how to fix it? Thanks
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Cross-Country
Joined: Feb 2013
Posts: 85
Likes: 3
From: Gibsonville,NC
Sticky choke
Ctubutis, So I assume the computer tells it to rev at startup? I assumed it had an electronic choke. You will have to school me on how it works. Sorry, total gringo mechanic here. Would an EFI tune up kit be a good place to start? It also sometimes sounds like it's skipping while idling. Thanks
Moderator
Joined: Nov 2007
Posts: 22,415
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From: Denver Metro Area, CO
Guys here are going to need to know if you have EFI or a feedback carburetor; I am going to guess EFI because I think that was the year the carburetor was no longer available on the 302 V8 but can't remember for certain.
In any event, if it were mine, the first thing I'd do is pull the codes to see what the engine management computer has to say... this can be done at home if you have a test light or voltmeter, most auto parts stores will pull codes for you for free but you need to find somebody who knpws how to do this with OBD-1 computers, merely plugging in a code reader doing nothing but reading the stored codes is only 1/3rd of the tests that need to be run.
These might get ya started:
https://web.archive.org/web/20120315...tion.com/?p=13
Ford Ranger - Testing EEC-IV Equipped Engines
In any event, if it were mine, the first thing I'd do is pull the codes to see what the engine management computer has to say... this can be done at home if you have a test light or voltmeter, most auto parts stores will pull codes for you for free but you need to find somebody who knpws how to do this with OBD-1 computers, merely plugging in a code reader doing nothing but reading the stored codes is only 1/3rd of the tests that need to be run.
These might get ya started:
https://web.archive.org/web/20120315...tion.com/?p=13
Ford Ranger - Testing EEC-IV Equipped Engines
Cargo Master
Joined: Dec 2004
Posts: 3,362
Likes: 22
From: Florence, SC
Originally Posted by ctubutis
I am going to guess EFI because I think that was the year the carburetor was no longer available on the 302 V8 but can't remember for certain.
Originally Posted by Big-Dawg
Okay guys, I have a 86 F150 lariat auto with the 302 EFI. And as of late when I crank it the choke sticks & I have to re crank it 6 or 8 times before it will idle on its own...
...So I assume the computer tells it to rev at startup? I assumed it had an electronic choke.
...So I assume the computer tells it to rev at startup? I assumed it had an electronic choke.
If you have to give your truck gas to get it to start, the idle air control valve is probably carboned up or malfunctioning. If the engine starts right up, but the idle is higher than normal, the throttle position sensor is probably the culprit.
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