By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our
Privacy Statement, and you agree that your use of the website is subject to our
Visitor Agreement.
Comments
writeup available at
http://www.ni.com/svix/engine_knock.htm
A: Several factors can contribute to, or result in, engine knock. These factors include outdoor temperature extremes, altitude, humidity, operating under heavy engine loads, time elapsed between routine tune-ups, vehicle age, and manufacturing and engineering tolerances. The most common cause of engine knock is improper tuning of the engine, where the engine timing has deviated from the manufacturer's design specifications. This problem is easily resolved through proper routine maintenance and tune-ups.
As a vehicle's engine ages, the octane required to prevent knock may increase. This condition is referred to as Octane Requirement Increase, or ORI, and is the result of normal engine wear. In instances where you experience occasional or moderate knocking, your first line of defense is to try a higher octane gasoline to accommodate this Octane Requirement Increase of your engine. Severe knocking, which cannot be remedied by using a higher octane grade of gasoline, demands your authorized mechanic's attention.
http://www.citgo.com/Products/QuestionsAnswers.jsp
The octane level recommended by your vehicle's manufacturer is a good starting point. But, price, driving habits and personal preference also are important. And so are individual vehicle characteristics.
>>For example, research shows that cars the same age with identical engines have different octane requirements, probably due to manufacturing tolerances. <<<<
The best advice is: try different gasolines, observe how they perform in your car, and pick the one that meets your needs.
http://www.api.org/consumer/
I wonder if the car needs to be tuned up... (Only has 36K on it though)
I have a 96 Protege with a 1.5L thing... been a good one so far (115K miles and still going strong). However, it does ping during hard acceleration unless I use 93 octane gas. The pinging is temperature-dependent: I can switch back to regular when it is below 50-60. Replaced plugs - same thing, it just keeps pinging.
Oddly enough, I suggested a friend of mine to purchase a used 1998 LX, and that thing was pinging during the test drive just like mine. I believe this is an issue with many proteges. And I suspect this is precisely the reason why Mazda techs do not acknowledge the pinging sometimes - they are aware of the issue but do not have a solution... Otherwise Protege is a great car... that requires the premium gas.
SSP056 FEB 02 Campaign - Mass Airflow Sensor Warranty Extension
Does anyone have a copy of this recall or know how we can get more information from Mazda? I'm wondering if it will lead to some info our mysterious engine knock.
1. The problem is very clear. When I step on Gas from Idle or low accelaration with 87 Octane Gas, the engine pings.
2. The problem disappears with 93 Octane fuel.
I believe the more you try to explain the problem to the service technicians, the more confused they get (or pretend to).
Regarding your mail about the Mass Airflow Sensor Warranty Extension Program, I did receive a snail mail from them. I am printing whatever is printing in the document. They did not mention about the ping as a symptom:
Quote Mazda
" Vehicles with Mass Airflow Sensor malfunction may exhibit any of the following symptoms: illumination of Check Engine Light, lack of power, hesitation, unstable idle. Should a symptom occur, please make an appointment with your Mazda dealer to have your vehicle diagnosed. If the malfunction is due to the failure of the Mass Airlow Sensor during the terms of this Warranty extension, it will be reparied free of charge. Failure of the Mass Airflow Sensor will not cause the failure of any other components. However, other components can cause these symptoms and are not covered under this extended warranty. This extension ONLY covers the Mass Airflow Sensor"
To avoid this, you might want to lubricate the lock mechanism every now and then. A silicone spray does well.
If you bring it to the service dept's attention, I think it's covered under warranty. Mine were.
As for replacing the MAF sensor. I've had this done and yet my engine pings. It *seemed* like the pinging was less right after the replacement, but now (6 months later) it is as bad as ever.
I think I'm going to put 92 octane in my car today and see if the pinging completely disappears.
Meade
Funny -- are we the only two people on the Protege discussions today? Sure feels like it.
Meade
Also, I can't remember where it was, but somebody from Virgina had a question about Daytime Running Lights (DRL's). I think he said that his car didn't seem to have them, but he wasn't sure if this was a defect or not.
Meade, does your Pro have DRL's or not?
Meade the Unopinionated
Hey But do I care? It's all under warranty.
DRL: It's a must for cars in Canada, not USA.
Yeah. GE must have donated a lot of dough to somebody who drafted and passed this law.
Meade
"Do unto others like they done unto you"
They aren't very bright anyway. I know from driving in front of her, and seeing other GMs on the road. The new high-intensity lights that are becoming so popular are really bright even on low beam. Those are the ones that create the real hazard. Supposedly they are aimed so as to minimize their impact, but on twisty, hilly roads, that doesn't work so well.
I don't know if any of you old timers remember me, but I have an Emerald Mica 2000 Protege ES (automatic). I have had the car for almost 2 years now and it has been flawless...nothing but oil changes until now. I took a trip to Nashville, TN (from Raleigh, NC) and on the way back it was raining hard for about 2 hours straight. The rain let up and shortly after I had the cruise control, AC, rear defogger, radio, and headlights on. Occasionally my headlights got brighter for a second and then back to normal. At the same time there was a slight surge (or hesitation?) in engine power. As I was almost back to Raleigh my battery light starting coming on, then going back off (and I felt the hesitation). I noticed this as I exited off of the highway onto the exit ramp. It was 3AM when I got in so I didn't do anything about it at the time. The next day I checked the belts and battery connections and everything looked fine. During the next week I made several short trips (non highway) and the problem did not re-occur.
Since I am moving to Nashville next week I took the car in to get this checked out before I make the 8+ hour drive. When I explained the symptoms over the phone to the service department they suspected the alternator. I brought the car in to the dealership today (wed) and the battery light came on as I was exiting the highway to go to the dealership (again with hesitation). This is the first time I had the car up to highway speed since my trip last week. They checked the car and said the alternator was fine. He also said he didn't have authorization to replace parts unless he could diagnois what the problem was (still under warranty). He said to pick up the car and if it happened again to bring it back in immediately. I told him this was not acceptable since I am moving and making the long drive to TN next week, and I want the problem solved. He agreed to have a mechanic take it on the road tomorrow to try and replicate the problem.
Does anyone have a clue as to what could be causing this? Any help would be greatly appreciated. BTW, the car starts fine, so I don't think the battery is losing its charge.
I have a feeling you may have an alternator problem after all -- but one that's not quite too-far-gone; it's getting weak and is about to fail. Note how you had just about every power-taxing appliance going when it happened the first time. I'd be curious if you can remember what was running when it happened on the way to the dealership. I'll bet you at least had the a/c on.
I've noticed, since I bought my 2000 Protege, that at night with the a/c on, the headlights blink when the compressor cycles on. Something I've just gotten used to. But I'll bet that's a sign that the alternator's working hard under those conditions, and when it starts to go, it probably doesn't take much to overload it. (Can't remember off-hand how many amps our alternators are rated at, but I think they're pretty good.)
My recommendation? Take the car back to your service department and take your service writer and/or a mechanic out for a drive -- and turn on everything again. I'll bet it recurs. When they test-drove it alone, they probably didn't turn on everything -- that's why you got the dreaded "failed to duplicate problem" line.
Good luck. BTW, my 2000 ES has 37,000 miles on it and is running fine, and since we last talked, my wife bought a 2002 Protege5. Keep in touch, Bryan!
Meade
The 1.8L config is weak in this respect viz. the alternator.
I see that happening to me too, but never got the batter light on.
probably the regulator is gone (or almost gone)
I don't think I had anything running when I drove it to the dealership. It was 7AM, so I don't recall having the A/C on, and didn't even have the radio on. I can't seem to reproduce it at lower speeds, but when slowing down after highway speeds it seems to do it. Makes me wonder if it is overcharging at high speeds.
I am about to call the dealership, and I will come back this evening with an update. Thanks for the advice.
Since I will be moving in a week I have to make the 500+ mile trip to Nashville. I feel like I am getting set up for disaster. You know how moves are, they rely on timing to meet the movers at my new place, sign the lease, etc. I will also be orienting and training at my new job and won't have time to be dealing with finding a Mazda dealership and having repairs made. If my alternator goes out during this trip I will be screwed.
Any ideas on how I might elevate this situation to a higher level with Mazda?
-Larry
Naturally, this doesn't apply to normal wear and tear, or if you noticed the deterioration or didn't do anything about it until after the warranty expires.
This seems to be an intermittent problem that just popped up (pardon the pun) today. Gonna need to visit my neighborhood dealer for a warranty repair soon
is it Dexron IID or Dexron IIE or DexronIII or MerconV?
Is it synthetic?
I guess this is a question for Maltb / Jerry
I brought it to my local mechanic (a good one) and he thought the sound was coming from the right rear. Checked the brakes and nothing was loose. He cleaned and lubed the mechanism, but this didn't help much. I think the sound seems like it's coming from the drive train (steering mechanism), but the mechanic was in the car with me when it made this squeal and he said it was definitely not from that location.
Any ideas?
could be a dry steering booster pump
could be a transaxle problem
The belt could be worn smooth too. If it's the belt, it's a cheap fix (although it looks awful tight to get to it).
I was shocked when Mazda NA Quality came back with this recommendation...that too within 4 hours...I was expecting a loose belt OR a valve gone bad.
But the steering feels great now!