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Rough Idle - 1989 Ford Festiva L, Carbeurated
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sdfgsdfg
Novice
Feb 10, 2013, 11:11 AM
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Rough Idle - 1989 Ford Festiva L, Carbeurated
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I have a 1989 Ford Festiva L, Carbeurated Manual 4 Speed
It has a rough idle, I guess the best way to describe it is:
It idles inconsistently revving lower then higher, also runs rough when engine is cold for the first few minutes of driving
Check engine light turns on usually when engine is fully warmed up at high rev on the freeway
I have the engine codes: 70- Vacuum switch and 17-Feedback system
I have replaced all general tune-up items: spark plugs, cap, rotor, fuel filter
I have also replaced the O2 Sensor
Wondering if anyone knows what is wrong with it?
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speed
User
Feb 10, 2013, 11:48 AM
Post #2 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Well i dont know about fords but it sounds like you definetly have a vacuum leak and that code for the vacuum switch definitely backs that up so i would be looking or listening for any vacuum leaks if you cant track it down take some carb cleaner and spray around the carb and intake and if it changes the idle worse thats where your leak is
GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012
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nickwarner
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/ Moderator
Feb 10, 2013, 8:15 PM
Post #3 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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this isn't a carb. Ford ended that after 86. You have TBI. I think you need to look for vac leaks too . Get some vac line in various sizes from the parts house in bulk for cheap. Change all of them them. Don't matter what they look like. Last time I trusted old rubber I got 18 years of child support.
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Hammer Time
Ultimate Carjunky
/ Moderator
Feb 10, 2013, 8:22 PM
Post #4 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Nick, The Festiva had an optional 2BBL in the 1.3 in that year.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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nickwarner
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Feb 12, 2013, 6:48 PM
Post #5 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Thats something new to me. Thought they got rid of that after 86. Haven't seem many of this vintage though in my neck of the woods. Salt killed them way too easy and they got scrapped.
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Discretesignals
Ultimate Carjunky
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Feb 12, 2013, 6:50 PM
Post #6 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Surprised that car is still alive and kicking myself.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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nickwarner
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Feb 12, 2013, 7:07 PM
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Especially with the poster in Dearborn, they use salt too last I checked.
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Discretesignals
Ultimate Carjunky
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Feb 12, 2013, 7:13 PM
Post #8 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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I wonder how the Festivas do traversing up and down the mountains?
Had a three cylinder Geo few years back that the customer complaint was the engine lack power going up some of the hills around here. I couldn't duplicate the issue, so the customer and his wife came to get the car. They must have had a combined weight of 600 pounds. Of course I kept my mouth shut.
Actually I wouldn't mind havin a 3 cylinder Geo Metro now with gas pricing going back up. 40 miles per gallon ain't too shabby for a mid 90's car.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 12, 2013, 7:27 PM)
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nickwarner
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Feb 12, 2013, 7:20 PM
Post #9 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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Well, at least they had good traction. Up here we throw a couple hundred pounds of sandbags in the trunk for wintertime. Keeps the back wheels from locking up as easily during braking. RWD helps not spin out so much. If you get on an ice patch you can break open the bag and throw sand on the ice to get traction.
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Discretesignals
Ultimate Carjunky
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Feb 12, 2013, 7:23 PM
Post #10 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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We do that down here too except we put golf bags in the trunk. 
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 12, 2013, 7:23 PM)
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nickwarner
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Feb 12, 2013, 9:37 PM
Post #11 of 11
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Re: Rough Idle - 1989 Ford Festiva L, Carbeurated
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But the only time you drive over ice is when someone spills their drink on the road. My driveway is a skating rink.
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