I have a misfire on cylinder #5 on my 03 Chevy Venture with a 3.4L, I changed the #5 Injector because the shop I took it to said that's what it was. But the same code came back for misfire cylinder #5, would a bad plug or wire cause the same code to come up.
View 6 RepliesThe fact :
- 136400 miles on a '03 Venture.
- Run on 5 cylinder for 1 minute after crank. After run fine on 6 cylinders.
- Engine coolant is leaking but I dont know where : there's no smell like a defective IMG.
I get a noticable "P0304: Misfire cylinder #4" with CES blinking under accelerating.
The cylinder #4 is the front middle one : the easiest to check and access. BTW i change plugs, wire and coil and still the same symptoms.
Fuel injector ?
It's a 2000 3.4 ... while i was driving on the highway the ses came on and it started running rough checked it when i got home cylinder 6 misfire came up so i did a compression test it only had 30 psi..there was a hole in a valve so i put on new heads changed the plugs and wires and a bunch of other things. put it all back together and it still does the same thing except now i have 160 psi in cylinder 6. I tried another coil, ICM, fuel injector, plug, wire and nothing changes.
View 12 RepliesMy mini van after driving it say 20 miles, starts shifting kinda like its slipping every know and then, and check engine light comes on. Its ok until about that first 20 miles, before that its ok.
View 1 RepliesI own a 2003 Chevy Venture minivan that had the front left tire go flat yesterday. I backed out of the parking space and drove a few feet before realizing we had a flat and then immediately re-parked. The spare was bad (rusty and flat) so I had someone take me to Goodyear to replace the tire (it had a hole on the inside sidewall and was not repairable).
We got the tire on and drove the 30 miles home - as I was driving, I noticed that there was a slight vibration and a buzzing/humming sound coming from the front of the car. It definitely changed pitch/feel as the car sped up or slowed down.
I'm going to take the tire back off today and inspect everything to make sure everything is in place, but what might be going on? Bent rim? Tire balance?
2000 Chevy S10 pickup
Had the check engine light come on, and when I checked on the code it gave a 4th cylinder misfire. Autozone instructed me to simply replace my spark plug with a new oem plug.
I replaced the spark plug as instructed. After about an hour of driving, the check engine light goes off and I think, great! Problem solved. However, another hour of driving and the check engine light is back on again, without going away.
I headed back to autozone to get a readout, just to find that it's the same code. So I put another spark plug in. Same result - check engine light goes off after an hour, only to come back on again permanently after another hour.
Now, normally I would think, this must be the spark plug line that needs replacement,however I am sure there must be some clue in the fact that the check engine light turned off for an hour.
By the way, not sure if relevant, but I also found a lot of build up around the spark plug before I initially changed it.In fact, there was so much that I had to scrape around the plug with an awl, and blow out the crud with a compressor,just to get my socket into place without there being crud in the way.
Any clue what that check engine off/on clue might be?
1997 chevy k1500 ... I have a misfire on cylinder 3 that i cannot figure out the cause. The idle is rough, backing out after starting is very rough, it seems to pick up at higher rpms but once the truck upshifrts to the next gear it shakes like a leaf in fall. within the past year the engine was rebuilt all new seals a new fuel pump, new injectors, new everything practically. so far i have done the following:
compression test results:125-130psi
fuel pressure test results: 50psi once primed, 50psi with engine running, no immediate pressure loss after engine is shut off
new spark plug wires
new spark plugs
replaced all four o2 sensors
I turned on the car (2003 Chevy Venture) today and the "Low Engine Oil" display came on. I checked the oil (car had been parked on a flat surface overnight and engine was cold) and the oil was about 1/3 of the way up the dipstick, which is way, WAY past the full line. I let the car sit and warm up a little, checked again and the same level appeared. I am wondering what that means. After being on for a minute or so the engine oil light went off.
The check engine light has been on for about two days and when I went to check it yesterday the error code was p0171. Are the two related? Is there an easy fix for this or is this a sign of a serious problem?
My 1996 S10 2.2 liter pickup has been having some 'issues'. Truck has been kind to me over the years, but now is running a bit rough. It has an irreguler idle and continues to run this way through all speeds. The blinking code reads "cylinder 1 misfire". I did all the basics. I changed the plugs and wires, ignition coils and fuel filter. Here is where is gets tricky, after changing the fuel filter, it ran great again. Then it started to run rough again later that day. I thought I somehow clogged up the new filter, so I removed the new one for inspection. Realizing there was nothing wrong with it, I reinstalled. Truck ran great again. Went out to drive it to work a couple hours later and it started fine, then after about 10 seconds of running, it went back to the rough idle.
View 19 RepliesMy Chevy Venture 2003 approx 120 thousand miles is idling high at times. It will drive fast. I can feel it speeding up even when I am not pushing on the gas. When I put the car in reverse it flys backward (I have to keep my foot on the break to back up at a safe speed) and then when I put the car in park the engine is VERY loud. Again, this does not happen all the time. Usually when I drive it over ten miles. I thought it might have something to do with the AC, but I played around with that (driving with and without the AC) and that did not factor in it.
I took it to my own personal mechanic and he couldn't find anything wrong with it. I then took it to a dealership and they said they couldn't find anything wrong with after doing their hundred dollars worth of diagnostics and said they needed it to actually be doing it..what they called a hard fail...for them to know what was going on. . They drove the car for quite some time and nothing happened. I drove it all this pass weekend and nothing happened. It might go a week or so without doing it. Thenn it does it. Usually I can turn the car off and restart it and it will be back to normal. The check engine light is NOT on. Any clue as to what might be going on?
I recently purchased a 03 Camry XLE V6 love the car, but the engine has been giving me trouble. Since owning the car in January it has been in the shop 3 times for a cylinder misfire on 5. They jave replaced the ignition coil, spark plug, and fuel injector and still would misfire, it might be a few weeks later, but it would still misfire. It is currently in the shop for the something, they have checked the fuel, electrical system, and compression tested the cylinder and all has comeback good.
View 2 RepliesI have an 03 Lincoln LS V8 136000 miles. Just bought it in mid June and it was throwing P0420 and 430. I changed out the Coils and plugs and that seemed to do the trick. Before I was getting about 18.5 mpg and after it went up to 22 mpg. Well this lasted for about 250 miles (about a week). Now I have developed a really bad miss on #7,and a sometime flashing CEL, changed out the coil, no change. My question could this be a fuel problem? I did have one thing strange thing happen before I did the coils and plugs. I was just pulling on to the on ramp stepped on the pedal and it was like some one turned the car off nothing let off the gas and it was still idling tried again nothing, pulled off to the side. turned it off and restarted and it was fine??? Plus the fact it seems now that I my have to do the solenoid in the tranny grabbing during shifts.
View 4 RepliesAs the title states... 2003 Passat 1.8T. The car was running fine. Had a new timing belt installed. The Check Engine light now continues to come on for Cyl #1 misfire. Attempts to fix so far include:
1) New plugs
2) New coils
3) New injectors
4) new cam and crank sensors
So I've been having some problems with my 2003 Volkswagen Golf lately (2.0 L gasoline engine, 98k miles). It started with an engine coolant thermostat code. This was repaired by replacing the thermostat and housing. Shortly after this fix I began to get a misfire, especially on rainy and humid days. Checking other forums I discovered that this was probably the result of a bad ignition coil.
The coil, spark plug wires and plugs were all replaced, but I am still getting a misfire. The idle is very rough so I've heard that it could be a bad fuel injector or faulty ground (though with the new components the other three cylinders sound cherry). The next step would be to purchase a "noid" test light and determine if the electronics to the injector are bad. I've also read that it could be a vacuum problem. There is a smell of unburned fuel when the engine is running.
How was it repaired? I'm quite good with the mechanical parts but lack the diagnostic tools, vacuum testers, multimeter and other such devices for performing complete screenings of the vehicle. Also, I can't drive it out to the local auto parts store to read the new error codes anymore. Finally I've got a "Chilton's" for the car but if there is a better manual available (better pictures, more descriptive instructions).
I just picked up my truck from my mechanic after he was trying to determine what was causing a misfire in cylinder 3. He swapped coils and then did a compression test and found the following results in cylinders 1 through 4, in order: 143, 132, 57, 151. He said I need to replace the engine or start with adding Engine Restore. Is there a chance I don't need to replace the engine? Could it need a valve job?
View 10 RepliesI have changed the COP and the injector as well as the spark plug. I am still having a misfire on #7 cylinder....
View 8 RepliesI just bought a used Toyota Avalon with 135,500 miles on it. They sold it because it was smoking and didn't know what was wrong with it(they were an old retired couple). They were the only owners and it has never been driven hard or abused.... Anyway. I read online that unhooking the vacuum hose from the pcv valve may make it stop smoking. I unhooked it and plugged the vacuum hose and they were right. It stopped smoking after I got the rest of the oil out of the hose. I thought maybe the old pcv valve was messed up so I got a new one and hooked it back up but then smoking was back. So I am getting too much blow by in it for sure. I don't think the valve seals are leaking because as soon as I unhooked the vacuum from the pcv valve the smoking stopped. I drove it for 2 days with no smoke whatsoever. What could be causing the blow by to be so strong? It was strong enough to spit oil out of the pcv valve without the vacuum hose sucking it out(there was oil on the engine).
The check engine light is also on so I hooked it up to a computer at an auto parts store and it said I had a misfire on 2 cylinders(2 and 6). So I changed all the spark plugs and re-hooked it to the machine. This time I only got an error code for cylinder 2. Each plug has a coil so I switched the coil from cylinder 4 to cylinder 2 to test if maybe the coil was bad, but it still gave me a misfire on cylinder 2 only. I even swapped the plug from 2 to 4 to make sure the new plug wasn't bad. Still a misfire on cylinder 2. It is still smoking(ONLY WHEN VACUUM HOSE IS ON PCV VALVE) and check engine light is still on and error code says cylinder 2 misfire.
My truck has developed a misfire on cylinders 1 and 5. The OBD2 scanner at autozone says code P0300, Po301 and P0305. I bought a new set of plugs and wires. Problem still there. I then replaced the both coils. Problem is still there. Is there a control module or something that could kill those 2 cylinders like on the older trucks with distributors?
View 7 RepliesI have 97 150 it has a misfire on cylinder 4 and 6. I put new coil packs on and new plug wires. Spark plugs are only a year old. what else it could be?
View 1 RepliesI have an 01 5.4 Triton with engine light on I put it on the scanner and it read miss fire on cylinder 6 and 1 I changed the cops and plugs boots and spring erased the codes but the check light is back on and scanner is say miss fire on same two cylinders u can hear it in the exhaust u can smell gas when sitting at an idle around 40 MPH has a slight engine shake goes away when u accelerate I am not sure what else to do some one told me to check for vac leaks and fuel pressure.
View 14 RepliesMy car is misfiring, as in acceleration 90% sputters until I lay the pedal to the ground, which obviously isn't good for my gas. What do I do? I can't find anything online and I don't want to be throwing money into things that don't work.
View 4 Replies