Last post on Nov 16, 2013 at 8:34 AM
You are in the Mazda 626
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Mazda 626, Sedan
#1949 of 2547 Re: Mazda 626 2002 V6 - hesitate [msnadia]
Jan 13, 2006 (8:09 am)
I have a 99 ES V6 5 speed manual with 134K miles. I had a hesitation problem when the car was relatively new (approximately 30K miles). The problem has been solved permanently by:
1. Installing new spak plugs and plug wires every 60K miles
2. Using only premium fuel (name brand like Mobil, BP). This car likes to run on premium fuel. You get better mileage and much better performance, so it comes out even.
3. Using Chevron Techron injector cleaner about every 4K miles (one Bottle per 10 gallons of gas in the tank).
4. Cleaning the throttle body and intake manifold EGR passages regularly. There are two EGR passages in the intake manifold just behind the TB. These will eventually get plugged with carbon and you get an "EGR insuffiecinet flow" trouble code (engine check light comes on).
Every time I go to buy some parts at my local Mazda dealer, I hear people complaining about bad mileage, hesitation, poor performance. And when they ask about what fuel they are using , the answer is alsmost always the same: the cheapest 87 octane they can find. Take my advice: if you have a V6, it will perform much better on premium. Mazda recommends premium in this car. When you use the 93 octane in this car, the following happens: the engine computer is able to advance the ignition timing more before the knock occurs. The knock sensor is tied into the system and prevent the ignition from being advanced too far. When running this car on 93 octane, my fuel economy increased by 2 MPG over using 89 octane (never tried 87 in this car).
I hope I convinced somebody to try this approach. BTW, replacing the spark plug wires every 60K miles is highly recommended in this vehicle. The reason is that this is double overhead cam engine. The plugs are located deeply inside the head between cams and spark plug lead boots are very long and subjected to extreme heat. As the boots degrade, so does the ignition performance. Use the OEM plug wires.
At 134K miles my car runs like new, has very strong throttle response, even at high speeds. It is not enough to try 93 octane once or twice - use it all the time, do other things I recommended, maybe have your injectors cleaned professionally. You should see good results in a few months.
#1951 of 2547 Re: CLUNKING FRONT END - EUREKA :) [mazda626atx]
Jan 19, 2006 (1:43 am)
I got lucky again and the Mazda guy here in Greece removed and pulled the mount apart, and happened to have 3 bearings that were the right ones. He said, and I was watching while they worked (very professional I might add) that the seat and everything else looked fine.
Heres a case when catching something early saves time and money. My question is do I still need an alignment ?
Thx again Pal
P.S.Car spinning like a top for the time being
#1952 of 2547 Re: We're gonna consolidate... [bnormann]
Jan 21, 2006 (1:57 pm)
How do I convert my Mazda626 wheels and tires that are 15' to 17'. Can the current hubs handle the modification or do I have to change the hub?
#1953 of 2547 Engine starts after 5-6 attempts
Jan 21, 2006 (11:53 pm)
my Mazda 626 ( 2.0 i GLX year 95) didn't start properly this morning. The engine turned over, but switched off again immediately. After 5,6 attempts it started, but while driving it startles occasionally, but carries on driving. The idle is slightly rough and I have a funny smell coming from the engine. Any suggestions? I thought about the fuel pump, but then it wouldn't go at all.
Thank you very much
#1954 of 2547 holy crap I messed up.
Jan 24, 2006 (2:58 am)
I got a lease on a 97 mazda 626 like 2 days ago from a used car lot. god I wish I would have found this website before I did so. it was a desperate situation and I knew forign cars were good so I just went with my instincts. now i have to deal with this. what kind of preventative maintanance would you guys suggest and what should I do if the engine check light is on? also how can I craddle and take care of this tranny to extend its life as long as possible? its got a shit tran Im sure after reading these posts. what would anyone suggest I do to keep this cars life up? its mileage is 108k... sgould I get synthetic oil? also does this car need premium or is regulare unleaded gas ok? if it needs better gas then what octane lvl do u suggest? thx for all the help guys...
need to keep this thing running for as long as possible.
Jan 24, 2006 (3:00 am)
whats the O/D light look like? what does O/D stand for?
#1956 of 2547 Re: holy crap I messed up. [aphexpusher]
Jan 24, 2006 (10:25 am)
Is the tranny auto? Is it a 4 or a 6? If so look into an Imperial or Hayden (SAME CO. NOW) or other brand plate and fin tranny cooler especially if you live in a warm part of the country. I would wait and see how much oil you burn because changing to synthetic or semi synthetic can cause problems in worn engines.
Also read, read, read and get to know about similar problems in your car, that I hope you do not develop. Also a Hyanes manual at an auto parts store for $20 or so is a good investment IMHO. Also there are other good 626 forums to browse through.
Best Of Luck
#1957 of 2547 holy crap I messed up.
Jan 24, 2006 (11:37 am)
its an auto tran and a 4. yeah I think Ill just install some kind of cooling system for it..... I was thinking about a transmission filtering system as well... what do you think? any other modifications to my car to help keep it running would be appreciated. like are there any mods I can do to the other car parts to keep it running longer?
#1958 of 2547 holy crap I messed up
Jan 24, 2006 (11:43 am)
also how should I figure if I can change to synthetic or not? what do you mean check how much oil I burn? can you elaborate?