2.5L Acting up, self reving and stalls while clutching - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-26-2014
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Icon4 2.5L Acting up, self reving and stalls while clutching

All right...I need help...I have a 2000 2.5L 5 speed with about 100K on it...Until recently it has been a great little truck but just the other day I noted that it has started over reving on A/C clutch drop out and when initially clutching (and I am sure it is not my lazy foot on the gas) It also will drop to a really rough idle at times, particularly when momentarily clutching to stop for a stoplight or sign occasionally resulting in a stall. I have noted that it has lost some power and now tends to get a little detonation when initally pulling away from a light, (even in 1st gear) or if I "get on it". So far I have: Cleaned the MAF, Checked for loose, broken, or cracked vacuum lines, (sprayed carb cleaner all over hell with no change in idle) checked for codes: Nothing, did the Key on, Engine on diagnositic run...no codes (except once with A/C on, when clutch dropped out, I got a speed low out of range code) About 6 months ago I changed the plugs and wires after running Sea Foam through the vacuum lines and through the tank for general purposes...just checked the wires again and they look good (no burn marks / cuts / damage)....Need a direction or two to go in...
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Old 06-26-2014
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Location: gallipolis ohio
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sounds like you have a vacum leak to me take a can of o2 air duster start the truck and srapy all the vacum lines and lisen for the idel to changed
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Old 06-26-2014
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it could also be a bad a/c cluch not releasing like it should
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Old 06-26-2014
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I am beginning to suspect a stuck open (or at least not fully shutting) EGR based on not being able to find another vac leak and the slight detonation I am getting on acceleration + rough idle and I just got a "bank 1 too lean" code... Thoughts anyone?
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Old 06-27-2014
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Well after some additional poking around troubleshooting the EGR, I have eliminated it and stumbled completely by accident onto the vacuum leak causing the issue. Turns out it was a crack in the large vacuum line to the EGR regulator solenoid. The hose has a pretty significant (almost 90 deg) bend and the crack was on the outside of the bend facing the fender....only found it because I brushed up against it and caused it to audibly his over the sound of the engine.....Hope this helps someone else down the line.
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Old 06-27-2014
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i would have never thought of that but dont delet the egr i did that to mine and it makes it mis fire when i give it to much gas but just driving is fine
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