Mazda - Exhaustsystems - Miata :: Backfires On Downshifting
My car often backfires on downshifts. It happens as I?m decelerating in gear, and then blip the throttle to match the higher rpm of the lower gear. The car runs well and is well maintained. The spark plugs, MAF sensor, O2 sensors, and cat are all in good order. I?m confident the air/fuel mixture is working as intended by Mazda (at least under normal driving), so I?m not looking for a mechanical culprit. I?m sure it?s my style and frequency of downshift/rev matching which causes the backfires.
It happens anywhere from 1-2 times a week to 1-2 times a day depending on my driving, or on something like 2-5% of all downshifts. Personally, I rather like excitement of the backfires and the exhaust burble which accompanies them, it makes me feel like I'm in a race car. My question is whether frequent backfiring is going to drastically reduce the life of my catalytic converter and O2 sensors.
I don't mind replacing the cat 5 years from now instead of say 10, but I don?t want to have to replace it within the next 10,000 miles or less. My Miata is a 1999 model with 130,000 miles on it. The exhaust system uses stock manifold and muffler but with an AEM performance intake and monsterflow catalytic converter.
Mazda :: Miata 1991 - Shift Got Stuck In Park
Last week the shift got stuck in Park. I used the emergency release button to get into Drive. After this happened several times I took it to the mechanic who said the shift needed replacing. Got a new shift. The problem persists. I get stuck in Park about 1 in 6 times.
View 3 RepliesMazda - 626 :: 2001 Miata - Intermittent Crank Without Start
Problem: car cranks but doesn't start then randomly it will start. 2 different shops...first thought maybe battery (no it cranks) but said these cars are notorious for cam sensor problems they didn't have software to diagnose. Brought to dealership again battery (we were finally beat down and replaced battery) ...then brought home if car sat for a few days totally dead needed jumpstart....brought back to dealer they replaced cam sensor and timing belt...went to pick it up and you guessed it....cranked but didn't start....mechanic came out and it started....so after replacing several parts we are back to the same problem intermittent crank without start...
View 4 RepliesMazda - Miata :: 2000 - Catalytic Converter Keeps Blowing Out
I have this vehicle, which keeps blowing out the catalytic converter, its been replaced 3 times in the last month, and the mechanic doesnt know why, he refuses to put another one on it, until he figures this out.
View 3 RepliesMazda - Miata :: Metallic Scrape From Wheel That Goes Away When Brake
I have a Mazda Miata 2001, 152,000 miles. It's developed a metallic scrape from the right rear wheel. When I'm driving about 20 mph it sounds like a scritch every half-a-second or so, and if I'm going faster it just blurs into a metallic scrape. When I tap the brakes, it usually stops, and then it'll come back a little bit later (maybe when I hit a bump?) It comes and goes, but it seems to be more persistent now (or maybe I'm just always listening for it).
I took the wheel off and sprayed brake cleaner everywhere and I thought that had fixed it, but it came back again after a week maybe.
Mazda - Miata :: 1990 - A/C Not Working - Change Compressor?
I have a 1990 Mazda Miata, and the AC is not working. It has been switched over to R134a. I took it to a mechanic to have it recharged a few weeks ago. He said that one of the o-rings was cracked and so it was leaking around that. He filled it up and put some stop leak in it and for awhile it seemed to work fine. Then it stopped blowing cold air. I took it to a jiffy lube just to have the level of coolant (correct term?) checked. The person there told me that it was very low and was leaking around the valve stems. I tightened the valve stems and re-filled it. After 24 hours it had stopped blowing cold air again. I got a price quote on a new compressor and it is about $500.
So - my question is this - should I just put a new compressor in or is there something cheaper I could try first?
Mazda - Miata :: 2000 - Car Running On Two Or Three Cylinders / CEL Came On And Continued To Flash
Car recently acted like it was running on two or three cylinders and cel came on and continued to flash. The shop that did the repairs is no longer a Mazda dealer, but has a factoy trained tech. Don't know the code #, but was told that there was a low voltage code, and a misfire code. The battery was replaced, throttle body cleaned and a new fuel filter installed. The cel came back on about 25 miles later. They rechecked the codes. Said it could be the converter, and cleared the code again. After about 150 miles, the cel came on again but the car ran normal. Talked to the shop again and was told the the converter problem would have to be serviced at a Mazda dealer. The engine did the running on three cylinder thing again. Since then, it seems to run ok but the light is still flashing. If the OEM converters are fragile are there better options for replacement? The car has 30,000 miles.
View 4 RepliesMazda - Miata :: 2007 - Water Standing Under Passenger Seat
I have a 2007 Mazda Miata that I just found standing water under the passenger seat. Took it to dealership the drain is plugged if I had brought the car in when under warranty they would have done the retrofit it needs to fix their lousy design problem for free. I am trying to talk to Mazda and the dealership about them fixing the problem for free. They issued a in house service bulletin but not to the public.
View 6 RepliesMazda - Miata :: 1994 - Clunking Noise From Trunk On Bumps?
I've got a '94 Mazda miata which is in good shape, with among other things a fair number of suspension upgrades. It drives really well, other than the clunk. On the occasional bump it clunks as if something is loose on the driver's side rear. I've checked the shocks, springs, jacked it up and inspected everything I can think of. I'm looking for wisdom from your decades of experience (in your terms wasted time) on what it might be.
View 3 RepliesMazda - Miata :: 2002 Stalls Out On The Highway / Vapor Lock In Gas Tank
My Miata stalls out on the highway but not on residential streets. If I open the gas tank ,it starts up again. This has happened with a full tank, 1/2 tank and 1/4 tank. How can I fix this?
View 9 RepliesMazda - Miata :: 1991 - Automatic Transmission Shifting Harsh In Cold Weather
I have a 91 Miata Auto. I bought it from someone that (I think!) never drain auto trans fluid during its 145K mile life. So last year I replaced all the gaskets/filters and tuned up the car. It runs fine except shifting harsh in cold weather. I have to mention that it seem to have no power and goes very slow on first few minutes.I used a pump to suck trans fluid out. It was so dark (even I dropped the trans pan and replaced filter/gasket). Then I pumped Lucas trans fix fluid in and it seem to improve. What should I do more to reduce the harsh shift condition in cold weather? Or is there a booster module need to be replaced?
View 6 RepliesMazda - Miata :: 2001 - AC Blow Cold For About 30 Minutes And Temp Gauge Move Towards H
I have a 2001 Miata. It's been over 100 degrees daily lately. The AC will blow sort of cold for about 30 minutes and the temp gauge will move towards the H hashmarks. If I turn the AC off, the gauge will slowly drop. I've also noticed that the amount of cold air is decreasing as time passes. In fact, the other day, the system was blowing air hotter than the outside temperature after about an hour drive.
The viewing glass has bubbling stuff flowing thru it. The recently flushed radiator is full as is the overflow reservoir.
Mazda - Miata :: 2007 - Grooves Inside Rims Of Wheel / Rotational Noise When Drive
So i was cleaning my 2007 mazda miata and i noticed one wheel has some fairly deep scratched grooves inside of it. I inspected all the other tires and the other front tire has similar marks but they are way way more of a surface/barely there scratches. The rear wheels are not scratched. I am also hearing a rotational noise when i drive. It gets faster as I accelerate and slower when I brake. I don't know anything about cars.
View 6 RepliesPassat (B5) :: Vibration Under Hard Acceleration When Downshifted
I bought a B5.5 wagon with 145kmi on it last week. It's a 1.8t with a tiptronic transmission.
Last night, when I stepped on the accelerator for the first time when it downshifted I got a nasty vibration until I let off. When just cruising or accelerating at a normal speed there is no vibration at all. It doesn't matter if you're doing 20 mph or 60mph, it's the same vibration when you accelerate hard.
I'm thinking maybe a motor mount or something?
Ford F-150 (2004-2008) :: 2006 - Truck Downshifted And Falls On Face Under Hard Acceleration
I have an 06 F150 2wd with the 5.4. Today on my way home I had to cross traffic while getting on the highway and had to get on it a bit. When I gave it the gas the truck down shifted then just fell on it's face until I let off the gas a little then it sped up like normal. It normally runs great but I don't get on it much. I just don't see why It runs great until I try to get a move on.
View 3 RepliesMazda :: Rattle - No Power On The Pedal?
What is wrong with this car? There is no check engine light, but when I try to accelerate, especially going up a hill, past 2k, there is resistance and it feels like I have my foot on the brake, and gas pedal at the same time. The car will not go past 40mph going uphill. I have had the spark plugs changed, still no good, I have emptied the gas, in case it was bad gas, I have added water cleaner to the gas tank in case it had water in it, was worse, added sea foam to clean the engine, then 40k to clean the gas tank better, seemed a bit better, now worse, added cleaner to the gas tank for my other things, forgot the word, and still my car does not accelerate, and rattles. I have had a car guy drive it, and I had a mechanic hook it up to a computer, some reading d4, said intermittent missing, I could tell them that! The words possible coil, cam, electrical , have come up, but the guy who drove it, didn't think it was the cam or coil?? I just bought this car with 100,000 miles to own a simple car that works, after enjoying my jaguar for 10 years. If I didn't need a car for work I would toss them all away! This is a Mazda miata...
View 4 RepliesMazda :: Stepped On Gas Pedal While The Car Is In Park Position
I accidentally stepped on the gas pedal of my brand new Mazda CX-5, when I had the car in park, while waiting for the outside bank teller. The car made a revving sound at the time, but seems to be driving OK. I am wondering if I have done any short/long term damage to the motor, engine, transmission or any other part of the vehicle.
View 19 RepliesMazda - Protege :: Little Hesitation And Jerkiness During Acceleration
Started my car yesterday and as I was accelerating, it made a very loud noise. It sounds like normal engine acceleration noise, only ten times louder. It was present whenever I accelerated, but not when I was coasting or idling, and not when the car was in neutral. (It's a stick shift.) During acceleration, there was a little hesitation and a little jerkiness, but not horrible. The problem came on suddenly - no problems with the car before yesterday.
View 4 RepliesMazda :: CEL Going On Intermittently - Clutch Pedal Position Indicator
My engine light started going on intermittently, and shortly thereafter it began to be difficult to change gears. I brought the car to a garage, and was told I need a new clutch (I have 50K miles on the car). However, the engine light says that there is a problem with the "clutch pedal position indicator."
The mechanic says that the position indicator is a separate problem, and I still need a new clutch. I don't know much about cars, but it seems to me that if the clutch doesn't know I've pushed the clutch pedal, that would explain why I have trouble changing gears.