Last post on Apr 23, 2013 at 10:59 AM
You are in the Mazda Protege
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Mazda Protege, Sedan
#3299 of 3738 Rough Idle Speed and Poor Acceleration......CEL also
Mar 30, 2008 (9:10 pm)
I have a 2001 Mazda Protege ES 2.0.......and I replaced the engine about 1 year ago. The newer engine had about 36000 miles on it. Ever since we replaced the engine on it.......it has had a idle problem and is now starting to have an acceleration problem. When I come to a stop, the idle speed will go down to about 500 and then usually go back up. When this happens, it will have a little hesitation when accelerating. No problems at high speeds. My CEL came on the other day and my friend read the code and it said "lean exhaust" so he cleared it for me and the next morning it came back on. When we installed the engine, we replaced the plugs and did a small tune up on it. It also seems to be having some transmission problems like troble shifting. I need some help trying to figure out the problem.
#3300 of 3738 Re: Crank Positioning Sensor in a 2001 MP3? [green86]
Mar 31, 2008 (7:46 am)
Green86 - I'm not sure if the codes on an '01 MP3 & an '03 Protege 5 are the same or not but when I was having CEL issues, I was getting the same codes but the P0300 was a Random Misfire and the P0421 was a Catalytic Converter code.
My car cuts out on me when driving down the road, engine light flashes for a minute then goes solid, then i get power again.
My car did the exact same thing as you're describing - replacing the plugs, wires and most importantly... the coils solved my issues. A little too late to save me from having to replace my CAT though....
I hope this helps you with your problem... good luck.
#3301 of 3738 Re: 2003 Protege' 5 - Check Engine Light [debbi1229]
Apr 01, 2008 (7:10 pm)
Our 2003 Mazda Protege has been clicking on the check engine light for 2 years now. We are now at 133,000 km or about 81,000 miles and it all started at about 40,000 miles. Spark plugs, coil pack, wires EGV valve have all been replaced. Our fuel injectors have been 'blown'. Our dealer has done the work under our extended warranty. Mazda Canada will not do any more work without further investigation! Our PCV valve has been replaced yesterday and today because a yahoo in one shop broke the new valve installing it. Then we had the blinking light of death near another garage who correctly installed the valve. My investigation on the net says it could be one of the cylinders is malfunctioning. We have a common problem. Why are the dealers not connecting?
#3302 of 3738 Re: 2003 Protege' 5 - Check Engine Light [bdkay]
Apr 02, 2008 (1:43 pm)
Our 2003 Mazda Protege has been clicking on the check engine light for 2 years now. Spark plugs, coil pack, wires EGV valve have all been replaced. Our fuel injectors have been 'blown'. Our dealer has done the work under our extended warranty.
We're glad you had an extended warranty! Have you modified the engine (e.g. by adding components)?
p.s. EGR valve
#3303 of 3738 so frustrated
Apr 03, 2008 (5:51 am)
my 01 protege lx 2.0 has 98000. Over the last 2-3 years it would occasionally lose some power, then catch up. Now its getting worse. 2 mechanics and the mazda dealership cant figure it out, it comes up rapid random misfire. I can be on the highway and drive steady, then it loses its power,for a 3-5 mile stretch, I'm losing speed with it floored, then it catches up. My recent mechanic charged my 650$ for the O2 sensors, and it didnt fix it. Now he says it can be the EGR valve or coil packs. I cant afford to have him do more work....should I press him to fix it for already paid funds? thanks
#3304 of 3738 Re: so frustrated [kpozzi]
Apr 03, 2008 (6:27 am)
I would not pay any more for something that may or may not work. We have had the EGR valve and coil packs done under our warranty but it was still happening until the day of my first posting when we had our PCV valve was replaced. Our PCV might have been at fault; it is too soon to tell. The catalytic converter possibly; but that problem has NEVER been suggested to us.
PCV valve should NOT be at fault; in the old days it might have been. An older mechanic disagreed with a younger one on whether that could be the problem. I think it's like doctors depends what they have seen. We are still in wait and see mode.
My research has come up with a simple cylinder compression test as the culprit. Has this been done? Try searching on PCV valve random misfire and you will find an article on the subject.
Let me know.
#3305 of 3738 Re: so frustrated [bdkay]
Apr 03, 2008 (7:05 am)
no, the cylinder compression test have not been done. The mechanics says that the CAT was ok, since the catalytic code was not present. The PCV has been replaced, full tune up, and O2 sensors have been changed. I'm close to 1000$ into this with no help.....by the way, it passes inspection fine. Thanks
#3306 of 3738 1990 Mazda 323 (Protege) will not start on a rainy day
Apr 28, 2008 (7:35 am)
I have a strange problem with my 1990 Mazda Protege (323 - 1.8L DOHC) - the car starts up fine on a dry and sunny day but it will not start on a rainy day or if it has rained hard the previous day and there is some moisture in the air and on the windshield.
It cranks but it will not start on these kind of days but on a sunny day it will start right up like nothing is wrong with it. I had the battery amps checked and eventhough the battery is 4 years old, it is cranking out the right amps and so that can be ruled out as the problem.
One of my coworker is telling me that this is due to some moisture issues and I need to replace the rotor and rotor cap....does any one else have this issue? What could be the problem here?
#3307 of 3738 1996 Protege rough idling
Apr 28, 2008 (7:38 am)
When sitting at a light the engine will run slightly rough for a few seconds then get worse where I think it will stall then kick back up to a slightly rough idle. It hasn't stalled yet. When driving, the engine seems to run fine (in town and at highway speeds).
The check engine light will also come on about once a week with a P0170 code. According to the book my OBCD reader came with it is a 'Fuel Trim Malfunction'.
I'd appreciate some suggestions on what I should look at.
EGR valve replaced three years ago (at a shop)
I put in a new alternator and belt 1 month ago (did I damage something while removing the old alternator??)
#3308 of 3738 Re: 1990 Mazda 323 (Protege) will not start on a rainy day [coolpete]
Apr 28, 2008 (8:55 am)
I haven't had that problem with my Protege, but I did have a mercury that if the engine got wet it would stall, turned out I had a crack in my rotor cap....so you might try to change the rotor or find some way to seal it with a moisture proofer to keep the moisture out of it.