runs horrible help please

[Hondafreak08]

88 ford ranger 2.9. It will run fine for a while. Then all the sudden when i hit about 2000rpm it will fall and start missin. Then if i floor it it will haul. So it falls in the 1800-3000 rpm range, and misses. Any ideas appreciated.

 

[Hondafreak08]

bump

 

[IMenriched]

get codes. Could be alot of things

this sounds bit like this http://www.therangerstation.com/forums/showthread.php?t=7041

if not well..maybe there would be some good info...still useable to you.

 

[Hondafreak08]

where do i plug in the scanner on the 88 2.9,, couldnt find it, do they even have it?

 

[Mutant Pony]

Between the blower motor and the air cleaner.

 

[IMenriched]

I beleive it a bit more house shaped...check the tech library here At TRS.
http://www.therangerstation.com/tech_library/OBD_I.html ...then look under the "test hookups" for better visuial.

 

[CraigK]

Hondafreak08

Sounds a lot like a problem I had. Try disconnecting the electrical connector on the O2 sensor to see what happens. The O2 sensor on my '87 is located on the Y-pipe of the exhaust system, just in front of the flange to the catalytic converter. Yours should be close to that. The run-stumble run-stumble cycle my engine was experiencing instantly stopped when I simply unplugged this sensor. It's a fast easy thing to try, and if it doesn't make a difference, just clip it back on.

CraigK

 

[Hondafreak08]

so i ran the codes and it gave me a bunch of fuel pump codes form who knows when. I reset and the light hasnt came on. I did unplug the 02 sensor and it helped a lot. Where should i go from here, replace the o2 sensor. I didnt know if unplugging it will put it in a safe mode, where it overrides other sensors.

 

[holyford86]

what were the code numbers you got? if you need to unplug the oxygen sensor to keep it running right then you may have other problems elsewhere, drive the truck for a bit and then pull codes again.

 

[Hondafreak08]

so should i plug in the o2 sensor and drive it or keep it unplugged. How long should i drive it before i try pulling the codes again?

 

[holyford86]

give it about 100 miles or so before you pull 'em again.

 

[Hondafreak08]

i doubt it will go another 100 miles. Im scaRED to drive it 5 minutes, it falls so bad

 

[Hondafreak08]

its been doing this ever since i got water in the intake,,, water didnt sit in it, i got it running in about an hour. maf dirty maybe?

 

[djurs]

Doesn't have a MAFS. Water could damaged the engine (bent rod, etc.)

 

[Natedog]

so i ran the codes and it gave me a bunch of fuel pump codes form who knows when. I reset and the light hasnt came on. I did unplug the 02 sensor and it helped a lot....

Specifically what were the codes? If you don't remember pull them again. If you're scared to drive it far, just do laps up and down the street at least if if dies you won't have far to push it.