Rough Idle problem fixed.....I hope.

robmedina · 12-11-2010, 03:58 PM

So a few weeks now my truck has randomly given a rough idle when I am stopped and in neutral. I attributed it to a gas station that I had been getting gas at for the last few weeks.
I removed and cleaned the MAF & IAC. I installed a new air filter & fuel filter, but the problem persisted. I did notice that this one hose (on the drivers side by the intake manifold) was cracking at both ends of where it attached. Today I replaced that hose and took the truck out for an hour test drive and it seems like the problem is gone.
Maybe it isn't gone and just hasn't shown up- but I put er through the ringer and so far no rough idle.
Here are some pics showing the hose I changed. Ok I tried to load the pics direct but it did not work- here is a link to the album;
http://www.therangerstation.com/foru...hp?albumid=978

Robert_1967 · 12-11-2010, 05:00 PM

yep, a bad vacuum hose will cause a rough idle.

Robert

The_Dealer · 12-11-2010, 05:55 PM

that would be the pcv hose...did u get a new pcv valve as well? its a bitch to get to

robmedina · 12-12-2010, 05:26 AM

Quote:

Originally Posted by The_Dealer

that would be the pcv hose...did u get a new pcv valve as well? its a bitch to get to

Actually I can't find the PCV for my truck. I read it is under the #2 cylinder, so does that mean the solid piping that this rubber hose hooks to (at the manifold side) goes into the pcv valve?

12-11-2010, 03:58 PM	#1
robmedina Member Join Date: Dec 2010 Location: Cherry Hill, NJ Year: 1997 Make: Ford Model: Ranger XLT Engine: 2.3L Class: 2WD Used For: everything Posts: 182 Rep Power: 5 iTrader: (0)	Rough Idle problem fixed.....I hope. So a few weeks now my truck has randomly given a rough idle when I am stopped and in neutral. I attributed it to a gas station that I had been getting gas at for the last few weeks. I removed and cleaned the MAF & IAC. I installed a new air filter & fuel filter, but the problem persisted. I did notice that this one hose (on the drivers side by the intake manifold) was cracking at both ends of where it attached. Today I replaced that hose and took the truck out for an hour test drive and it seems like the problem is gone. Maybe it isn't gone and just hasn't shown up- but I put er through the ringer and so far no rough idle. Here are some pics showing the hose I changed. Ok I tried to load the pics direct but it did not work- here is a link to the album; http://www.therangerstation.com/foru...hp?albumid=978
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12-11-2010, 05:00 PM	#2
Robert_1967 Member Join Date: Nov 2009 Location: White Pine, TN Year: 1988/1989 Make: Ford Model: Ranger Supercab/BroncoII Engine: 302/2.9 Class: 2wd Street/4x4 street Used For: Soon to be hot rod/Daily Driver Posts: 1,557 Rep Power: 12 iTrader: (0)	yep, a bad vacuum hose will cause a rough idle. Robert __________________ All Truths are Known upon Death. If I can't work on my Ranger or BroncoII, I rather be fishing. If Facebook, MySpace, and Twitter were all destroyed, 90% of teens would go insane.
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12-11-2010, 05:55 PM	#3
The_Dealer Member Join Date: Jun 2010 Location: Macon, GA Year: 1985 Make: Duh! Model: Bronco II Used For: Everything Posts: 1,567 Rep Power: 9 iTrader: (2)	that would be the pcv hose...did u get a new pcv valve as well? its a bitch to get to __________________ 85 b2/fm146/bw1350 D'sparked,built, Holly'd 2.8/4" SJ coils/Explorer leaves/3" blocks/ shortened Explorer driveshaft/ 2.5" pivot drops/30x9.50 MXT's/Roofrack/HID's/ Autometer guages Comming Soon:1" body, 33's, LED tail light boxes
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