1982 F100 barely idles but revs and goes down then revs and goes down

20

Asked by Sep 01, 2015 at 03:00 PM about the Ford F-100

Question type: Maintenance & Repair

1982 F100 barely idles but revs and goes down then revs and goes down. The advice months ago about the gummed choke and needle worked. I have been getting the boys to keep the carb clean and choke unstuck but now it will crank and either hot or cold it idles rough and does the "rev then almost die" the again and again. I seem to remember back in my 20's what this was ...but that memory is just gone. Please help the my cranial flatulence.

7 Answers

90,365

check for vacuum leaks, also could be the TPS or the idle air control valve. If possible see if you can pull the codes...

1 out of 1 people think this is helpful.
17,320

Replace air filter and change fuel filter and spray carb again with carb cleaner using the whole can.

Best Answer
20

Thank y'all for your answers. If this doesn't work I think I might have to brave taking just the top of the carb off and spray down into the holes etc to get to all that gum. Hope it all don't fall apart hehe.

17,320

Also add carb cleaner to gas tank

1 out of 1 people think this is helpful.
20

Ok..after cleaning the carb inside (top still on) and out I grabbed the Auto-choke to see how to replace it and I felt it move in my hand. Smh. I turned it counter clockwise and the motor reved with all kinds of power..good clean burning and air etc. So I turned it back to wear the idle sounded passable and grabbed a flathead to tighten. I really didn't real it tighten but whatever torque I put on the thing kept it from moving. I realize this is shade tee but I put some white out on both sides of the turning and not turning parts to mark where it runs ok. Now when I crank it it cranks up but at a high RPM but a quick step on the peddle knocks it back down engaging the Auto-choke? Looks like it will last til i get to the auto store. Ever heard of that ever turning in your hands? I have turned a distributor but never this. Getting new one and gonna have to put a clamp on the line coming from the PCV to the bottom of the carb as well. Its too loose.

20

ahhh choke thermostat was what was turning. Thanks guys..y'all always set me straight.

17,320

Sorry for not getting back with you but seems like you have everything under control. Glad we could help.

Your Answer

Add photo

Related Questions

F-100

Looking for a Used F-100 in your area?

CarGurus has 151 nationwide F-100 listings and the tools to find you a great deal.

ZIP:

Search Ford F-100 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-100 Experts

#1 tennisshoes
tennisshoes
Reputation 400
#2 FordNut
FordNut
Reputation 300
#3 MrBlueOval
MrBlueOval
Reputation 240
View All

Related Models For Sale

Used Ford F-150
3,010 Great Deals out of 207,337 listings starting at $1,000
Used Ford F-250
558 listings starting at $1,299
Used Ford Ranger
189 Great Deals out of 6,726 listings starting at $1,595
Used Chevrolet Silverado 1500
2,541 Great Deals out of 151,790 listings starting at $1,500
Used Ford Mustang
537 Great Deals out of 42,625 listings starting at $1,699
Used Toyota Tacoma
708 Great Deals out of 31,689 listings starting at $2,750
Used Ford F-250 Super Duty
440 Great Deals out of 43,294 listings starting at $1,900
Used GMC Sierra 1500
981 Great Deals out of 60,003 listings starting at $999
Used Ford Bronco
183 listings
Used Dodge Ram 1500
496 Great Deals out of 12,989 listings starting at $1,495
Used Chevrolet C/K 1500
1,058 listings starting at $1,250
Used Jeep Wrangler
502 Great Deals out of 18,397 listings starting at $2,500
Used Chevrolet Camaro
378 Great Deals out of 40,505 listings starting at $3,500
Used Ford F-150 SVT Lightning
5 Great Deals out of 137 listings starting at $8,999