2000maroonxj

ok guys im new to the forum and i really need some help with my jeep it seems to be running rich and bogs or hesitates under load its throwing out what looks like soot from the exhaust and has terrible power i really need some help i made a video of the jeep running ill post it below thanks guys<br />
<br />
<a href="http://youtu.be/0-UzR7AMWAk" target="_blank">http://youtu.be/0-UzR7AMWAk</a>

DFlintstone

MAP/Map tube/wires? I think your MAP is on the front of your TB. It might have a little "L" tube underneath to provide it vaccum. If that were leaking or messed up, it would run pig rich. (I'm not familiar with 2000)

2000maroonxj

Thanks for the reply I have checked those already even switched the map sensor off a a donor motor still didn't make a difference in stumped on this

93gc40

what are the codes causing that check engine light????????

93gc40

Try cleaning the TB, TPS, and IAC check o2 and cats, check all vac hoses. Check fuel pressure, could bad pump and filter. year 2000? check for dreaded cracked heads.

2000maroonxj

I cleaned the tb iac checked for vacuum leaks and injector leaks I don't believe its a cracked head because it's not tough to start the fuel pressure when primed is 47 and running in like 49 when I shut it off it goes to about 5 psi after about 3 minutes

DFlintstone

Well, any coolant loss? Oil looks fine? Any "milky" stuff anywhere, like on/inside the oil cap or on the dipstick? Was it cold when you made that video? You do know it's free to get the codes read at a parts store. Sometimes you can see the crack looking down through the oil filler. (often where the 0331 cracks. One guy posted he could squeeze the hose and see a green line appear. Also there might be deposits along a crack.

(if it's yes, no, yes, no, you likely have a crack)

2000maroonxj

No coolant loss video was made not cold but also not operation temp it threw these codes P0505 idle control malfunction
P0123 Tps pedal position sensor circut high imput
P0113 oat sensor 1 circut high imput
P0122 tps pedal sensor a circut low imput
P0705 Trans range sensor circut malfunction (prndl imput

I cleared them and they don't come back maybe their all on the same circuit and I have a blown fuse?

skife

Some codes take several drive cycles to come back.
Everything points to a throttle position sensor, check the voltag.

2000maroonxj

Ok what should the voltage be

2000maroonxj

Ok went out a checked my voltage I did this while the tps was plugged in and then I unplugged and tested the tps while plugged in didnt jump around it was nice and smooth .8 volts closed and at WOT it was 3.8 or 3.9 volts now when I unplugged and check pin 1 was ground pin 2 showed 2.8 volts and pin 3 was my 5 volt. Is pin 2 supposed to be showing 2.8 unplugged? Thanks again for the replies

2000maroonxj

FIXED IT!! the glug valve was clogged and shorting out the o2 sensor vaporizer

DFlintstone

Friggen glad I don't have one of those. Sounds messy and dangerous.

2000maroonxj

It was pretty pricey the mechanic who fixed it charged $2300!! That's almost what the car is worth I'm just glad it's running right again

Turbo X_J