Having problems with your 1989 Ford F 250 ?
I have a 1989 Ford F-250 with a 5 speed manual transmission. I will be driving at any speed and when I start to coast to a stop sign or need to press in the clutch, the rpm gauge will jump down to 500, and bobble between 500 and 750 for about 2 seconds, then stall. I can then put it in gear and pop the clutch and it will then start right back up. I would like to know all of the possibilities of what this could be.
Air cleaner, fuel filter, MAP sensor, O2 sensor (two of them), vacuum hose off or cracked, stuck EGR..... any of these can cause this condition. The computer depends on correct readings and will try to get into "limp mode" and your truck will stall as the idle circuit is trying to level off....
Clean thrrotle body and the air idle control motor on throttle body
Repair Help & Product Troubleshooting for 1989 Ford F 250
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