have a 1997 civic lx. have replaced 02 sensor s plugs wires cap rotor. after it runs for about 10min it boggs down and starts sputtering and barely runs. runs pretty good for the first 10 min. little miss about 35to40.the exhaust pipe glows cherry red after the cat if you keep running it after it starts bogging down. any ideas of what to look at thanks.

 

Is.
It.
Throwing.
Any.
Check.
Engine.
Light.
Codes?

Sounds like it;s running lean.
Clogged catalytic converter?

 

sounds like you are RUNNING **** POOR LEAN!!!!

 

if it was the cat wouldn't it glow red before the cat???

 

Just throwing out stuff off the top of my head. What I don't understand is why you would keep running it until it was red hot.

 

^

 

yes on codes 23 codes mostly misfire banks 1234 o2 sensors af sensor. replaced all that. was going to take it back and get a readout. but something drained the battery in less than two hours.short somewhere maybe the ecm

 

Did you say there were 23 different codes?

 

Give your engine an ignition system tune up and fix code 23.

 

well i jump started it took it to auto zone . .2 miles somewhere the check engine light went off the only code on it is 0705 transmission position sensor.ran it 4 more miles started boggging again. this time i noticed or i looked sooner but it was red farther down the pipe about 10" from the cat and right under the cat about 1" ring.

 

an d yes the guy said 23 codes most of them repeats

 

sorry the guy said code 0705 transmission range sensor

 

When it bogs you say it's only throwing the transmission code? That's hard to believe because it sounds like your car is about to blow up. Is this an automatic?

 

google "red hot cats" and u will get plenty of posts. my old car did that after the engine got "washed" in coolant. but yeah red hot cats means the fuel is not burning correctly in the cylinder and is BURNING IN THE CAT. kind of a big deal.

 

i think the codes reset when the battery went dead. now all it is showing is the tranny code.something drained the battery. maybe ignition idk will have to look further.

 

check engine light came on again po501 speed sensor.since it has the problem when it heats up i checked the coolant sensor i am getting 10 volts instead of 5 on the supply from the pcm. is the pcm faulty?

 

What are the wire colors in the ECT sensor connector you are testing?

 

black/ white dash and green/white dash

 

Wrong connector/sensor. The ECT sensor wires are Red/Wht and Grn/Blk for a 97 Civic LX.

 

ok thank you . where do i need to look

 

Google.
https://www.google.com/webhp?sourcei...sor%20location

 

The ECT sensor is located below and just forward of the distributor.

 

yeah thanks i found it. had 5 volts good ground.it measured 154 on ohms my book says it should read 2 or so. do you think this could be causing the problem

 

sorry that should be 15 on ohms

 

Should read 200-400 Ohms with the engine fully warmed up.