my 89 ranger 2.9 is having trouble staying running,when i start it up,i have to keep my foot on the gas and above an average 2000 RPM's until it warms up or else it will die.it puffs some black smoke and has a coughy shaky idle.I've already replaced 2 of the sensors, the tps, and the iac.

while searching this forum, i found a couple posts mentioning replacing the iac, maybe my replacement was bad? i got it from a junkyard, so its a possibility....


before it was parked, it burned waaaaay more gas than normal, it had new plugs, cap rotor, coil, all that is good. did i just end up with a bad sensor? time to try again, lol?

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i have an 89' 2wd ranger,extended cab,2.9 six cylinder,no after market parts.all stock....nothing special at all lol.it's a one owner vehicle.my dad bought it brand new.it was his work truck for many years.then it was givin to my brother.who by no means what so ever treated it nicely...in other words the truck has seen way better days.the truck is now mine and not running very good

Could be bad sensor

New one might not actually be that much

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that's kinda what i was hoping for,so far it's been a trial and error process lol.

I had an '86 Bronco II that had nightmares like you describe. One of several issues I found restoring it to driveability was a plugged catalytic converter. When I took it apart the honeycomb catayst inside fell out of it in LOTS of little pieces.

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2004 Ranger 4x4, 5 speed manual, 4.0 V6

I had the same problems on a 90 bii w/2.9. I replaced everything you have including the fuel pressure regulator, coil, etc no avail. It ended up being a worn out O2 sensor. Replaced it and it ran great.

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'20 Ranger Lariat FX4 Oxford White

i guess i'll change my o2 sensor and see how it goes,thanks for the replies,i'll let you guys know how it goes.

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i have an 89' 2wd ranger,extended cab,2.9 six cylinder,no after market parts.all stock....nothing special at all lol.it's a one owner vehicle.my dad bought it brand new.it was his work truck for many years.then it was givin to my brother.who by no means what so ever treated it nicely...in other words the truck has seen way better days.the truck is now mine and not running very good