PacosTacos88

01 Civic EX
5 spd
190,000 miles

I'm having problem with my car seeming like it's bogging down or losing power. Only seems to do this when i first start it up, then after a mile or two, it goes away.

When I first hop in and start it up, it will idle around 1000-1200, then will come down to around 700 a minute or so later. Then I'll take off in first gear, and when it hits around 3000-3500 rpm's, it seems to die a little or lag before climbing any higher. Holding the gas pedal constant, it will quickly die and surge between 3 and 3500 rpm's.

Again, this problem seems to go away around 2-3 miles down the road.

Ideas? Suggestions? Cost to fix?

lazlong

Hmm...have you ever cleaned your throttle body?

ashokudu

190K miles,

You may want to try putting new spark plugs, they may just be fouled and not functioning properly until the engine warms up.

ashok

TopDog

For me it was the oxygen sensor heater.

It relies on exhaust heat and has a heater for the first few mins - heater breaks, oxygen sensor screws up until it is warm enough.

PacosTacos88

Where's that located?

lazlong

There's no sensor heater on our car. Looked at the diagram of the 2002 SI and it didn't show one either.

@TopDog: Are you sure you didn't change the heated O2 sensor?

PacosTacos88

Thanks for the help guys!

Cleaned the Throttle Body, replaced the o2 sensor, and while I was at it, cleaned the IAC, VTEC Noid, and EGR Valve. But it was new plugs that solved my problem. Wow they were shot! Had a hard time finding a torque wrench that went down to 13 ft lbs too. But all in all a good day, and now she runs like a champ.

Appreciate all the help again guys, and DIY's FTW!