Mazda CX-7 sport that has rough idling when it is started and goes away when warmed up or driven. Is giving OBDII error code P0300 - multiple misfires. Where should I start looking?
View 3 RepliesThis problem has been getting worse over the last 2 years. When the car starts it idles fine at about 1000 RPM. As soon as it warms up, it starts to idle rough, between 500 and 750 RPM. It almost quits running. As soon as you give the car some gas it runs just fine. About 3 weeks ago I got a "Engine Lean" check engine light error. I reset the system and have not gotten the error again. Since then I have: changed the MAF cleaned the EGR (made sure it closes completely and ohm out the coils in the actuator) changed the O2 meter on the exhaust manifold cleaned out the throttle body Ohmed out the air idle controller. What I should check next. I was planning to check the fuel pressure in case it is a fuel system problem. It is a 1999 ....
View 5 RepliesOk, I replaced the head gaskets on this truck a couple years back and now I am having symptoms similar to the ones I was having then. I am not entirely convinced that this is what is wrong however.
Symptoms:
Truck was idling rough until it warmed up
Truck takes forever to warm up or simply does not warm up
If/when it warms up it operates at higher than normal temp/almost overheats(it hasn't overheated yet)
Heater blows very cold air
White smoke(has been cold outside so not sure if due to temp or coolant)
Overflow bubbled when I shut the truck off, but it has only happened once so far
I am kind of at a loss, but like I said am suspicious of the head gaskets.
Today I went to the gas station and after I gased up and turned the car on my car started idling rough, almost to the point of cutting out. I started out on the road and my check engine light started blinking. After some time it stopped and just stayed on. The whole front end shakes pretty bad when at idle. The car has trouble accelerating till roughly 35-40 mph then seems to ride ok. I'm not very car knowledgeable, but I do take care of my car. I know I need to replace some of my hoses and spark plugs soon, but am worried that it may be more serious.
What I would like to know is: 1. What could possibly cause these issues and 2.
2003 Mazda Protege
I have a 2000 Ls 3.9 V8 125,000 miles that started idling rough.I checked for codes and got p0171 (bank 1 lean), p0175 (bank 2 rich) and p0307(cylinder 7 misfire). I swapped cop and sparkplug from cylinder 7 to cylinder 5 and erased the codes.I ran the engine for a while and rechecked the codes to see if the misfire followed the cop and plug. They did not. I still get p0171,p0175 and p0307 (cylinder 7 misfire).
View 7 Replies2003 with 2005 motor, auto trans. After truck is warmed up and been driven a while I get a vibration/nice when stopped. Sometimes the Vibration changes with the brake peddle application. Is there a ps hose that can go bad internally on these? Anything else to look for. It's easy to hear/feel in the cab but can't hear it under the hood. Changed the ps fluid with no change.
View 14 RepliesMy wife stopped for gas at a Circle K, about two days later this Sienna started idling rough and missing. I put some Seafoam in it and it cleared up. About one week later, she gets gas again, at another Circle k,about two blocks from the other one. Again, the next day she comes home from work complaining of the van running rough. I took it out and it drove fine. Whenever this happens the Check Engine light comes on, so I ran a code reader on it and it tells me, "Miss detected on cylinder 3".
So I checked all the plug wires, took out the plug (which I had just changed back in Oct.) and checked it, it looked fine. I thought maybe it could be the coil, so I switched the coil to see if I got the same code reading on a different cylinder. I unhooked the battery to clear the code after switching the coils, started it up and still got the rough idle and code. I turned it off (the van) and go in the house, I come back out and start it and it's running fine. I go to the store and all is well, go inside the store for maybe 45 minutes, come back out and start it up, I get the rough idle and missing.
I ran the code reader on it again and cleared the code, then restarted it and it was running fine again. Whatever it is, it has something to do with starting the engine (a 3.1L). One time it will start up and drive fine, the next time it starts the rough idling and missing. I figured if it was the coil and I switched them and got the same code on a different cylinder I'd narrow it down, but so far it has been running normally.
Owning a Hyundai. I have a problem and it seems to be pretty common but haven't gotten anywhere with it yet. Last week my 2004 accent 1.6 manual transmission started running rough. It was idling higher than normal and while driving would not go past a certain rpm (about 2500 if I had to guess,no tach). On the way home from work it was running this way and then started badly misfiring and shut off, when attempted to restart it would not. I pulled the codes with a scanner and got p2400, p0562, and p0121. I charged the battery and replaced the throttle position sensor, still won't start. I can hear the fuel pump kicking on when I turn on the ignition. Also found the ecu 1 fuse blown, replaced it and continued to attempt to start with no luck, fuse was blown again. Like I said I haven't owned the car long and I don't know much about it. I am not sure where to go from here and I don't know how all these symptoms are tied together.
View 42 Replies1999 Ford F-150 V8 5.4L... The other day I was attempting to fix my 4wd. I discovered that the vacuum tube by the 4wd solenoid had become disconnected. I reconnected it and in an effort to see if my fix was successful, I drove my truck up one of the canyons nearby. I got to an area full of loose rock and popped my truck into 4wd. As soon as I began to drive, the truck started idling very rough and died. I attempted to restart it for the next few minutes unsuccessfully. I got it started once and it continued to idle rough for a few seconds and died. I have not been able to start it since. It turns over but will not crank. It is not throwing any error codes. What I have checked so far:
Spark plugs are working.
When turning the ignition into the ON position, I am able to hear the fuel pump working.
I have not seen any cracks in the vacuum hose.
All the fuses are still okay.
What the culprit may be?
A while ago, I acquired a 1991 Mazda 626 automatic (currently 105,000 miles) that now has what appear to be the beginning of transmission issues. It hard shifts from 1st to 2nd - the shift jerks really hard when the car is cold but once I've driven it for 15-20 minutes the hard shift almost disappears completely and stays that way as long as the car is warm - except for stop and go traffic (Seattle traffic) than the hard shift comes back no matter how long I've been driving. The only other shifting issue I notice is on the hills where it seems to shift more frequently than I might expect it too.
Other than what I've described this car is in perfect condition inside and out, as well as engine-wise. My question is on transmissions and whether I should get a rebuilt one. I've taken it to multiple transmission shops and almost all have told me two things 1) I need a new transmission and 2) that the issue is a hard component problem and I could most likely drive this car for months or years without having to replace the transmission - if I want to put up with the rough shifts. They recommended just driving it until the transmission goes out and then replacing it.
This has happened 3 times now in the last couple of months. After driving on wet roads, our 2003 Mazda3 won't start. It won't even crank or turnover (primary vs. secondary ignition). All of the other electronics come on when you turn the key, but nothing from under the hood. After a while of presumably drying out... anywhere from 15 minutes to hours, it starts again. I'm thinking something is shorting, but what.
Mechanic can't figure it out... but he's only had it for a day, and it's been dry, and starting fine.
I am going on vacation in May and am curious how long the C can sit if it's not started or driven? I have read that it can drain or possibly damage the battery from sitting to long, so just how long is o.k.? It seems like a pain to have to find someone to start up or drive the car while on vacation.
View 8 RepliesBeen having this problem since this past Easter when our mechanic installed new valve cover gaskets.
When the van is hot (normal operating temperature) and you turn it off just for a minute, like to get gas, and try and restart it acts like it’s not getting enough gas. It will cough and sputter and balk. It will finally start though and after 30 second all will calm down and it will run fine.
One big problem is, is that is intermittent – meaning it won’t mess up for the mechanic and putting it on the computer shows nothing wrong.
One mechanic said it was a cracked distributor. Replaced that for $400. and same problem. I’ve also cleaned the Mas Air Flow sensor and changed the fuel filter.
I have a 2003 Camry 4cylinder. On first start of the day the engine shakes a little untill it warms up and is driven for about 2 blocks. After that it is smooth. I cleaned what I could of the throttle body on the car, changed spark plugs and PCV. All that worked but cold start shake still there.
View 9 RepliesMy new Prius C is only 6 weeks old, but started hearing some annoying rattles from the dash area when driven on rough roads (tarmac or roadworks).
View 19 RepliesI have a 1994 Ford F-150 pickup with a 4.9 litre fuel injected inline six. Truck ran fine and took me to my destination but after sitting for 4 hours the truck would not start. Engine would turn over normally and could hear fuel pump running (didn't seem to stop) but truck would not start.
I changed fuel filter but truck would still not start. I removed air filter assembly and poured starting fluid in the air intake and engine started but idled roughly. Engine will rev up but runs very rough and lacks power when driven. Also the check engine light stays on.
I have an '08 Ranger, automatic. For the last several months, the truck has been making an intermittent high-pitched squeal/whine, but only after it has been warmed up (10--15 minutes driving) and only while it is idling. As soon as I'm driving, the whine stops; whine will occur both in drive (but stopped) and in park. The whine will not happen every day I drove, nor will it happen at every stop. When it does squeal, the squeal will fade in and out in volume.
An interesting kicker I've found recently: it seems to be dependent on electrical draw. For example, if I'm sitting idle with the lights on, and the truck is squealing, and then I turn the lights off, it suddenly squeals less. Still squeals, but less than with the lights on.
I have had mechanics check all the usual suspects, belts, etc, but have not found anything amiss. Nor can I actually get the squeal to occur when I visit the mechanics.
About 3 months ago I threw the timing belt on my 2001 Mits Galant ES 2.4L 4cyl. I replaced the belt and 8 valves; costed me a pretty penny. Since that time I was having Idle problems. The Throttle assembly with the Idle Control valve was replaced. I have Cruise control. The car was started, it warmed up and then shut off. Attempts to keep car running on its own have failed. Is it a programming problem? Is it the computer? No codes are returned.
View 2 RepliesMy wife's 2005 Mazda 3 had a bit of a noise on cold start and our mechanic thought it was connected to an intake manifold flap malfunction. Now I notice it seems to have a constant ticking noise at idle. If one of the electrical connections near the intake manifold is disconnected the noise stops. Another forum suggested that connection goes to the solenoid valve. They think that valve may be stuck open and when the connection is taken away it closes and the noise stops. At least that is what I was able to extract from the discussion. Does that make sense? The solutions I saw recommended were to either replace the intake manifold or replace the solenoid valve or don't do anything because it's not harmful other than the motor may lose a little bit of power.
View 6 RepliesWhen the car is idling or running in low speed when i power up or down the windows the car begins to vibrate. Mazda 626 year 2001.....
View 5 RepliesI recently had $1600+ of work done on my 2005 Mazda 3 (L4 2.0L). R&R Head Gasket and Thermostat and Coolant Temperature sensor replaced. Since then it's been idling roughly. This was NOT occurring prior to the work. Mechanic says it needs a couple of weeks to "sync"? Does this makes sense? I'm wondering if they did something wrong to cause the problem.
View 9 Replies