[peoples]

There is something wrong with my car, and i am trying to narrow it down to what it is, so therefore, i would need your help if able to help me.
I am getting way too much backfiring. Everytime time i try to accelerate, the car starts to cough (or backfire). This happens when i floor it, but sometimes also if i try to accelerate slowly.
I have some things in mind that i think might be causing this.
To make sure, today i had throttle body cleaned of carbon deposit and made sure that throttle body boot is on tight enough. Problem still persists. Some other things that might be causing this:
- oxygen sensor
- air flow meter sensor
- faulty fuel pump
If u guys have anything else in mind, or any other suggestions such as similar experience, please post. I am not very good with the money at the moment so can't go around changing every part to solve the problem.
P.S. My mecahnic told me today that crankshaft harmonic balancer has slipped and needs replacement. Do u think this could be the problem based on side effects mentioned above???
Thanks guys

 

[XsKaPe]

first thing that came to my mind was the air flow meter.. i think about four of us on this forum have had that problem in the past two months, every time it was just a faulty electrical connection (whether its not plugged in properly or just generally knackered).

sounds like it could be something else in this case though.

sorry i cant really help ya dude, but good luck none the less!

 

[Panther73]

Dude...have you pulled the codes to check for 02 sensors or your MAF? I have a similar problem and my CAT seems to be the problem (blocked exhaust)...if you can; raise the car and seperate the CAT from the front of the exhaust and leave a gap...start the car and rev and see if it will run better. It will sound bloody loud but mine wouldn't rev in idle but once I did that, it would...so that was my problem. Maybe it'll help? (and it's free, more importantly!).

 

[peoples]

XsKaPe, I bought new O2 sensor, but my mechanic said it is better to replace it after i have replaced the crankshaft harmonic balancer because after that he will do base ignition timing.

Panther73, i would think the same thing, but i have put a 2.5" exhaust with hi-flow cat in march this year (7 months ago). Therefore, i don't think (at least i hope so), that i would not be experiencing problems of that kind at this stage.
Anyhow, any other opinions welcome
Thanx

 

[ducktape69]

ok well..the exhaust guys told me i have a blocked CAT...can the crap that is in the CAT cause any blockages in my new exhaust????

and how much is a new high flow CAT that makes the softest sound possible?