2004 Ford Ranger High Idle and Power Loss

FORD RANGER
Avatar
MCCOOL36
  • MEMBER
  • 1 POST
2004 Ford Ranger FX4 LVL 2 4.0 ltr. V-6 60,400 miles. truck now idles @ 3000 rpm and has a major loss of power. check engine light comes on and off. could this be an o2 sensor or maybe an MAF sensor? (airbox might have been full of snow) (disconnecting maf sensor and idle goes back to normal and also rattling sound coming from cat. converter)
Feb 25, 2007 at 12:28 PM
Advertisement
Avatar
CHEVY22
  • ✓Experienced Mechanic
  • 1,375 POSTS
get the codes read and give us a shout , if you can get under the truck andbang on the converter and it makes noise , it is still under warranty and i can help you out with that but we need to bet the other problems fixed before going to the deale, auto zone does codes for free , just record the and repost here

jim

oh and leave some feedback if you were happy with your help , we all donate our time here helping others free of charge
Feb 25, 2007 at 12:51 PM

Suggested Repair

Have the check-engine codes read for free, record them, and use them to diagnose the high idle and power loss before a dealer visit. Tap the catalytic converter; if it rattles, it may still be under warranty. Do not treat the MAF as confirmed failed until the codes are checked.

Conversation Summary

A 2004 Ford Ranger 4.0 idles around 3000 rpm, loses power, and has an intermittent check-engine light, plus a rattle from the catalytic converter. Idle returns to normal when the MAF is disconnected, and snow may have entered the airbox. The expert advises reading and posting the codes, checking the converter for a rattle that may still be covered by warranty, and fixing the other problems before going to the dealer.

Related Repair Questions

Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle