Hesitation/bogging until car warms up

[buzdof]

'85 325e, MarkD chip, everything else stock

When the car is cold it runs just fine for the first block or two then it starts to bog at about 2500rpm and I slowly lose speed. The only way to get power is to lift off the gas pedal and push it in again and it "catches" at a particular point at lets me accelerate but I need to keep doing that until the car warms up, then it drives just fine. I also smell gasoline as I'm driving, but that's been the case for the past couple weeks.

This problem didn't come up until yesterday when I tried to replace my o2 sensor (couldn't get it out...) but I did replace the tranny mounts.

Please help me, I'm so frustrated :(

[Sean]

Sounds like it's running rich and if you need a new 02 sensor, that's why.

You've already answered your own question...........

[Restoman]

Put pb blaster on the threads to help loosen the o2 sensor.

[buzdof]

Put pb blaster on the threads to help loosen the o2 sensor.

I did that and I let it sit for an hour or so since that was all the time I had. Next time I try this I'll let it soak for a lot longer...

[nando]

coolant temp sensor

the O2 sensor doesn't provide feedback until the car is warmed up.

[buzdof]

great, but it looks like there are a few different sensors on the car that do this. Can you narrow it down a little?

thanks

coolant temp sensor

the O2 sensor doesn't provide feedback until the car is warmed up.

[buzdof]

some more info I forgot to mention: when I have this problem, it revs just fine when I push the clutch in. It will rev all the way to the rev limiter with the clutch in, but not while it's in gear.