i need some advice i was wondering if anyone could help me out i have a 2000 Honda civic ex i'm losing power as my car's temperature goes up. only does this when the temp goes up. when the car is cold it will take off good and run smooth.. then the car warms up and down goes the performance the motor sounds like its stressing
no CELS
also starting the car isn't so smooth i have to try at least 3 to 4 times in a hot day.. here's what i have done so far
Adjust the timing belt, bought a new fuel pump, sparkplugs, new distributor, im all out of ideas help!

 

anyone?

 

well i decided to use a OBD2 scanner anyway and to my surprise i got 3 codes
po301
po302
po300

any help??

 

Well those are misfire codes which explains your power loss,and if your losing power/misfiring when the engine overheats....all signs point to head gasket failure

The burning of coolant is causing the misfire/power loss

 

its not overheating the temperature just goes up but not above the middle line
i checked the codes everything has been ruled out and i think it might be
the catalytic converter getting a straight pipe installed tomorrow see if that works

 

maybe knock sensor is bad. IDK look up bad knock sensor on Google, Worth a look IMO. Converter is a possibility. Would temp have an effect on power though if it is the converter. maybe through expansion closing the honeycomb.

 

You have a misfire in cyls 1 and 2. That has absolutely nothing to do with your cat. When was your last full tune-up?

 

LOL, I love when people try to self diagnose and put random parts on the car.

 

last month to be exact, i had a cracked headgasket with water in my oil. i had it resurface it at the machine shop and afterwards did everything tune up even bought a new distributor already did the timing on my belt so cant be that

well i did a little of thread reading and some pointed at the cat

not sure what to do at this point might check out what hondad6 suggested

 

Let the engine idle to warm up, then turn it off and test the plugs. Also, check your injectors.

You have a misfire. A cat isn't going to fix that.

 

i still think a blown headgasket between cylinders 1+2

 

Do a compression check, might be a bad valve. Too bad you didn't freshen the head when it was off would of been easier that way.

 

A lot of times adjacent cylinder misfires or low compression between the 2 means a bad head gasket.

 

Could be head gasket maybe block was warped also. Was it decked as well? ^ makes a lot of sense.

 

its propbably a warped block idk i replaced the head gasket 3 times already so it could be.. thanks for the help everyone but i decided to just to sell it, not going to spend anymore time and money on a d16

 

You sold it already?

 

It's up for sale