2.4L EFI 22R-E in '86 Pickup; Idles rough at low RPM
#1
2.4L EFI 22R-E in '86 Pickup; Idles rough at low RPM
I found another thread that seems to describe my problem (here), but a few of the specifics are off. I just wanted to make sure that the suggestions in the aforementioned thread will still work for my vehicle.
Allow me to elaborate:
I'm not sure if this problem has been a long time comming or not; I have had to adjust the idle speed a few years ago. Regardless, what usually happened up to now is that it would idle slow and rough at 500-600 RPM when it first started up, but would idle more smoothly at approx. 700 RPM (Chilton's manual says it should be 750) after normal driving for a few minutes. I recently took it to a shop to have an issue with the alternator resolved, and they ended up replacing the alternator. After that, the engine would only idle roughly for a minute before quitting. I have backed out the idle speed adjustment screw as far as possible without removing it entirely, but the engine still idles roughly at approx. 500-600 RPM.
I don't think the ignition system is to blame since there is no loss of power at any engine speed above idle. There is no dicernable problem at higher engine speeds.
I hope this is enough information and would greatly appreciate any assistance.
Thanks
Allow me to elaborate:
I'm not sure if this problem has been a long time comming or not; I have had to adjust the idle speed a few years ago. Regardless, what usually happened up to now is that it would idle slow and rough at 500-600 RPM when it first started up, but would idle more smoothly at approx. 700 RPM (Chilton's manual says it should be 750) after normal driving for a few minutes. I recently took it to a shop to have an issue with the alternator resolved, and they ended up replacing the alternator. After that, the engine would only idle roughly for a minute before quitting. I have backed out the idle speed adjustment screw as far as possible without removing it entirely, but the engine still idles roughly at approx. 500-600 RPM.
I don't think the ignition system is to blame since there is no loss of power at any engine speed above idle. There is no dicernable problem at higher engine speeds.
I hope this is enough information and would greatly appreciate any assistance.
Thanks
#3
No, I haven't adjusted the valves since I've owned it. Would tight valves also explain the low idle speed? As I said before, I have the idle adjustment screw backed out as far as is possible without removing it and it still isn't at reccomended idle speed.
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