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i don't mind spending 50 bucks for a used ecu. there may have been a short when i jumped my truck and the battery mysteriously died in less than an hour! I'll try the "smell" test. According to hollander only F87F-afa, afb, bsa or F8pf-ena are interchangable. Looks like I will be looking...

ugh...i'm at a loss as what to do now. :( dealership called to tell me to pick it up before 5. they have no answers as to the cause.

dealer doesn't know. he says he thinks its the processor and he changed the plugs...and he doesn't want to spend anymore money diagnosing.

let me call over to the dealer and see what tests they've run today...and if i have to leave it for day five.

yikes...i'm actually in NJ, but the truck made its way out from CA by way of previous owners. no one has an exact 98, 2.0 2wd at truck around here. i tried a 99 ecu, it didn't work. i was trying to avoid buying pointless computers, but looks like i may take my chances.

Thanks for everyone's input...I appreciate it!

I replaced the MAF already. It's a brand new MAF. New Filter, NO K&N, as I know the oil could damage the MAF. I checked the voltage its fine. 1. I will check the harness to the two upstream connectors again. 2. I checked for intake leaks. I used carb cleaner hoping to find leaks...I...

Ranger was running perfectly before the codes appeared. The day the rich codes appeared was right after a battery replacement, as my battery had died the night before. The next morning, I wasn't present for the battery replacement. The only codes I have had and continue to have are...

About 6 months ago, my 98 ranger started running rich and I was throwing codes for BOTH 02 sensors reading a rich running truck. It runs really, really rich. I only get 100 miles on a full tank of gas. I stumble and starting is rough. Poor acceleration, no power. I shoot unburnt fuel out my...

Morning, new here...looking to expand my knowledge of rangers.