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Mazda Protege Maintenance and Repair

3599 messages,  Last post on Nov 25, 2009 at 3:22 PM

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#3542 of 3599 Re: 3000+ rpm when running in park [waldoownz1981] by downtube Sep 10, 2009 (12:56 am)
Replying to: waldoownz1981 (Sep 07, 2009 9:54 am) The idle on your car is controlled by the ECU (Computer). If it's idling too high, that means the computer is not doing what it should. One of two possible reasons: - The ECU is receiving a bad input, or - The ECU is unable to control something it needs to control   Common problems with inputs - The Mass Air Flow sensor carefully measures the amount of air flowing into your engine and provides that information to the ECU. The ECU then meters the appropriate amount of fuel to the engine. Two issues can occur leading to incorrect MAF signal to the ECU -- Dirty MAF. A thin wire inside the sensor sometimes gets dirty. It can be cleaned by spraying brake cleaner or electrical cleaner on the wire. Don't touch the wire with anything (not even a q-tip) or you'll break it. -- Vacuum leak. A vacuum leak lets excess air into the intake that the ECU doesn't know about. Any vacuum leak will do it, but particularly inspect the large accordion-like pipe between the air cleaner and the engine intake. Cracks sometimes develop in the grooves, and cause air leaks.   - Bad coolant temperature signal. If the coolant temperature signal is wrong, the ECU will incorrectly adjust for temperature. I don't have any diagnostics for this.   On the output side - Sticky Idle Air Control Valve. Can be removed and cleaned. - Sticky EGR Valve. Can be removed and cleaned.   There are other possible causes, but these are common. Replies to this message: autonomous (Sep 10, 2009 8:35 am)
#3543 of 3599 Re: 3000+ rpm when running in park [downtube] by autonomous Sep 10, 2009 (8:35 am)
Replying to: downtube (Sep 10, 2009 12:56 am) Good summary of the likely suspects!   Checking for leaks can be done easily; the others (MAF, Idle Air Control valve, EGR valve) might involve some skill.
#3544 of 3599 Faint Smell of antifreeze by mazdaman23 Sep 16, 2009 (7:07 pm)
I have an 03 Protege LX and for the past year I have smelled antifreeze when I walk in the front of the car. I never see any on the ground, and my water pump was replaced recently, but the faint smell persists. Car never overheats or has any problems. Does anyone else have this problem? Replies to this message: downtube (Sep 17, 2009 5:26 pm) hooker321 (Sep 17, 2009 5:59 pm) mazdaman23 (Sep 18, 2009 2:42 pm)
#3545 of 3599 Re: Faint Smell of antifreeze [mazdaman23] by downtube Sep 17, 2009 (5:26 pm)
Replying to: mazdaman23 (Sep 16, 2009 7:07 pm) Very small leak seems like a good possibility. A close visual inspection with a bright light of all hoses, gaskets, and coolant lines might turn up some evidence of a leak. It's pretty tight in the engine compartment, so you'll only be able to see a percentage of possible locations.   How's the level in the overflow tank?   I'd wait for the car to be dead cold, like overnight, then check the level in the radiator. A pinhole leak will eventually lower coolant level - and usually will grow.   If the coolant isn't going down, you could either wait to see if the leak grows, or take it to a shop to have them try to find it. Replies to this message: hooker321 (Sep 17, 2009 5:59 pm) mazdaman23 (Sep 18, 2009 2:42 pm)
#3546 of 3599 Re: Faint Smell of antifreeze [downtube] by hooker321 Sep 17, 2009 (5:59 pm)
Replying to: downtube (Sep 17, 2009 5:26 pm) MIght be coming from the weep hole on the water pump. BUT its under the timing cover so you will have to remove it to see. The timing cover might be collecting the antifreeze in the bottom. When full enuff it will then drip out. Remove upper and middle timing cover plates and inspect. Also thin old hoses can emit an oder by sweating. Not uncommon either.
#3547 of 3599 belt breaks altenator good or bad by bbb12 Sep 18, 2009 (12:17 pm)
The alternator froze when driving shredding the belt. Working on it at home any time I reconnect ed the wires it would run for a short time and freeze up. Took the alt to a shop tested it on the bench ran fine. Took it to another shop in the car, they came back saying it was a bad alt, even thought it ran fine during the time they had it didn't freeze. Computer issue???
#3548 of 3599 Re: Faint Smell of antifreeze [downtube] by mazdaman23 Sep 18, 2009 (2:42 pm)
Replying to: downtube (Sep 17, 2009 5:26 pm) The overflow tank is still full, it could be the weeping from the hoses. I know it can't be the water pump area because when it was replaced they were under there doing all sorts of work. I'll try checking the radiator itself when the car sits. Just find it hard to believe anything would be wrong, CR gave this thing a bulletproof reliability rating!
#3549 of 3599 Re: 2000 Mazda Protege Stalling Problem - Help! [shhzoe] by sss400 Sep 26, 2009 (11:43 am)
Replying to: shhzoe (Mar 18, 2006 2:35 pm) cam sensor is the problem. Mine did exactly the same thing and the check engine light came on but the shop said that the reading was not about the cam sensor. But my friend replaced the cam sensor and I had no problems starting the car again. Before that we replaced the O2 sensors (2) and it did not make a difference.
#3550 of 3599 2001 Mazda Protege Low beams will not turn on! by clarkwd Sep 29, 2009 (7:23 pm)
My little yellow lights work and so do my high beams. The high beam bulbs are also the low beam bulbs. I checked the fuses and they are good. I took out the relay from under the hood in the fuse box and the high beams and low beams didn't work. It was a wet and rainy day so maybe I hit a puddle and got something wet?   2001 Mazda Protege Replies to this message: autonomous (Sep 30, 2009 2:15 pm)
#3551 of 3599 Re: 2001 Mazda Protege Low beams will not turn on! [clarkwd] by autonomous Sep 30, 2009 (2:15 pm)
Replying to: clarkwd (Sep 29, 2009 7:23 pm) The high beam bulbs are also the low beam bulbs Interesting. I guess Mazda changed this in 2002 because my Protege has separate bulbs for high & low beam.

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