Home Discussion Forum Tech Articles Other Articles Featured Rides Readers Rides Classifieds Shirts & Decals Parts Store

Ford Ranger Discussion Forum

Off-Road Truck Of The Month

'MastuhWaffles'
November 2014 OTOTM

Mini Truck Of The Month

'ATX'
November 2014 MTOTM
 

Go Back   The Ranger Station Forums > Truck Discussions > Need Urgent Help Fast!

Notices

Need Urgent Help Fast! For posting questions when you're in the middle of working on something and have to have an answer right now.

Reply
 
Thread Tools Display Modes
Old 12-28-2012, 10:14 PM   #1
stampsc31757
New Member
 
Join Date: Dec 2012
Posts: 9
Rep Power: 0
stampsc31757 is on a distinguished road
Default 98 3.0 rough idle

I need help with this problem as smog is coming up in a couple of weeks and need to get this sorted. It runs fine if the ecu has been reset. Once it has had time to read the sensors for about 15-20 miles it starts to have a rough idle. The idle air control valve, egr valve, dpfe sensor, egr solenoid, spark plugs, plug wires have all been replaced. I have looked for vacuum leaks and dont find any. I am running out of ideas. It only idles rough once it is warmed up. I dont know if it could be the coolant temp sensor. My gauge reads perfectly. Please help. I do not know where to take it next.
stampsc31757 is offline   Reply With Quote
Forum Notices (Not shown to 'Premium Members')

 Reminder:

 We're looking for participants to help move our banner from Alaska to Florida: Click HERE.

 Click HERE to see the banner map.

 Want to become a Premium Member & not see these notices? Click HERE.

Want your truck considered for Truck Of The Month? Click HERE.

Don't forget to vote!

Old 12-29-2012, 07:03 PM   #2
monsterchuck
Member
 
monsterchuck's Avatar
 
Join Date: Jan 2010
Location: Michigan
Posts: 156
Vehicle Year: 1984
Vehicle Make: Volkswagen
Vehicle Model: Jetta
I use this vehicle for: Prius-shaming fuel mileage
Rep Power: 10
monsterchuck is on a distinguished road
Default

Any codes? The check engine light does not need to be on for a code to be in the system. If you're disconnecting the battery to reset the PCM, you may have to drive it a few times to get anything to show up.
monsterchuck is offline   Reply With Quote
Old 12-29-2012, 07:13 PM   #3
stampsc31757
New Member
 
Join Date: Dec 2012
Posts: 9
Rep Power: 0
stampsc31757 is on a distinguished road
Default

I know you have to drive it around after you reset the ecu. It still has a rough idle. I dont have a vacuum leak unless its in the brake booster or an area like that. I still do not have any codes pulling up. Its been about 50-60 miles of both highway and city driving. No codes stored or pending. I just replaced the intake air temp sensor, fuel filter, and pcv valve. I haven't reset the ecu in a couple of days and i do get out and drive it around for about 15-20 miles a day to try to get the ecu to throw a code. It doesn't have any power loss, cold idle is great, normal driving is great. Just a very rough idle once it is warmed up. It does it stopped at stop signs while in drive or neutral, as well as in park. I haven't checked reverse or any of the other gears. I did put some fuel system cleaner in to see if that can clear it up. I also just put 91 in it to see if that helps any. Any help will be greatly appreciated.
stampsc31757 is offline   Reply With Quote
Old 12-31-2012, 01:31 AM   #4
stampsc31757
New Member
 
Join Date: Dec 2012
Posts: 9
Rep Power: 0
stampsc31757 is on a distinguished road
Default

I found my problem. The vacuum line going from the valve to the solenoid was mixed up with another vacuum line.
stampsc31757 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump




All times are GMT -5. The time now is 05:28 AM.




1999-2014 / 959 Media LLC / All Rights Reserved