20 Most Recent 2004 Mazda 6 - Page 5 Questions & Answers

On a ten year old vehicle like that, I'd say that the coolant wasn't replaced frequently enough, and the thermostat has rusted shut. Begin by flushing the cooling system, replacing its contents with PROPER antifreeze, and replace the thermostat and radiator cap.

U0100 - Lost Communication with ECM/PCM "A" U0155 - Lost Communication with Instrument Panel Cluster (IPC) Control Module U0101 - Lost Communication with TCM All of them are Geniric Codes 4 Mazda, I would say who ever was working on the car last, posobly forgot or missted 1 or 2 connection plugs along the way near the last repairs. So just trace yr last steps 2 see if ther any unpluged connectors, cos looks like they all are part of same chane in that line. P2187 - Sys To Lean at the idle Bank 1 Hope that helpes you. Good luck. Tony D:-)

You need to get a new control switch. The control switch , I think, is on the turn signal control arm,

it needs to be checked on the spot by someone knowledgeable of auto repair there are a few things to check.

run the fault codes and check for accelerator position sensor/motor. replace if necessary

hey, I own an 04 v6 mazda 6 as well and recently had that same problem. Its an ignition coil. The thing is that you have to wait until the check engine light comes on to know whick cylinder it is. I replaced all my spark plugs and boots all at once thinking it would solve the problem but it didnt work. It takes a while for the light to come on so what I did was to push my engine and make it come on. Hopefully its one of the the three coils in the front or else it would be a pain to get the back three. Each coil will run you about 50-80 dollars. Call me if you have any questions. My name is Carlos.786-210-1493

there may be a fuse 4 the chargeing system ,check it first if ok u may have a bad alta or bad battery or a bad ground check the battery terminals also 4 cleanness, u can take booster cables, do not use the possitive use ground cable ,one end to the ground on battery the other end to ground on motor if lite goes out then u know u have a bad ground those r a few things u can check on

Sounds like the transmission is shifting into both reverse and a forward gear at the same time. Time for a tranny overhaul. But first check the transmission fluid level.

p0301=does not mean no compression,it means the computer saw a misfire on # 1 cylinder,
P0345=cam shaft position sensor bank 2,
if the timing marks are on ,i am thinking your hearing a sound of the timing being set too high and pinging under acceleration,try an experiment,refill with a higher grade of fuel for one tank to see if your noise leaves or you hear a difference.

Mazda 6 does not change gear quickly made computer to computer check revealed the vehicle speed sensor is bad, but still no change, then it does not matter what do I do now

First, double check that the gas cap is good and tight. Sounds silly, but sometimes a loose gas cap will cause the check engine light to come on. Failing that, take the car to someone who can read the codes. You might have a bad or lazy O2 sensor but the codes are the quickest way to tell.

I have a mazda 6 also I dont have a manual for it but I believe it is a safety feature as we get in and turn cd's up loud and I believe it is so that as we sllow down it fades so we can hear sirens etc around us. Mine fades down when I drop below 40km and gets louder agian when I get back up to 60km.

It's possible, but your car may start in gear without it! Your insurance company wouldn't be happy, nor would any bystanders.

first thing i would be doing is if u can lift the frot of the car and with someone in the car e brake on and put it in drive and one person under it to hear where the noise is coming from as it could be a shaft or like colin h says it could be the trany ison its way out

Sounds like it needs a transmission. Try JDMengines.com