95 civic DX all stock


when i downshift it smells like burning metal, like gas is burning in the exhaust manifold. which i already had to replace because it got stuck to the old O2 sensor. (overheated maybe?) i changed out all the injectors and it idles fine now (was surging) but still has the smell.

checked the TPS, it reads 0.46-0.47 at closed and 4.6 at WOT. i read that its suposed to be 0.5 closed with a variance of 0.02. does this means its bad? needs to be adjusted or fine? the volts go up normally all the way, no weird jumps or dead spots.

i was getting an o2 code whenever i downshifted, so i changed it. now i have no codes and spark plugs look fine.

what could cause this?

 

how hard are you down shifting? is it possible your slipping the clutch when downshifting?, how is your exhaust? any leaks?

 

It happens at 2000 rpm in 5th gear or any other speed, I don't think its the clutch. Yes, the exhaust has some leaks but it still shouldn't smell like burning metal should it? I don't have a cat.

 

any other ideas?

 

I'm not too sure, seeing you only smell it after downshifting.

 

Never heard or smelled that before, Try taking it to a mechanic?

 

Clutch is prolly slipping also check for oil around the motor.

 

the pan drips a lil bit every now and then, but i dont know why it would only smell when downshifting. i thought it was a bad injector but i changed em, so i have no idea.

and the clutch isnt slipping... not when cruzing at 35 in 5th gear, theres not enough torque to make it slip, plus i think i would notice, i have an ex cluster with tach.

 

Wen u down shift motor goes into a vacumm.

 

cluth for sure ..... why you down shifting in a fully stock anyways ?

 

Hes RICEING hahaha

 

Pull your tranny out and check your clutch, then tell us you don't think its your clutch.

 

i just wanna make sure you guys know that it does this even when almost no torque is on the clutch. i can cruise at 35 in 5th gear which it like 1.5K rpm and just take my foot off the gas and i smell it.

 

any other ideas?

 

its clutch because then u down shift ur gasket for the headers and cat gets tighter and push back thats if ur mounts are fryed lol or elts u chould have a slow diss ingadge causeing the problem of burning the clutch if its cable oil up th cable of hydro get it checked out or change ur clutch

 

it happens just when cruising and taking my foot off the gas, (not using the clutch at all) so i dont think the clutch has anything to do with it. but i can see what your saying about the exhaust. i do have a test pipe on there and missing the upper trans mount. maybe its just hot exhaust im smelling and its normal? but this happened when the motor was in my old hatch too, and it had a cat and all the mounts. so im still stumped. i will be changing the clutch in a few weeks for those of you that think thats it.

today i started noticing hesitation under acceleration, it feels almost like the spark timing is jumping around, so im gonna change out the ICM and see what happens.