Toyota - 4Runner :: Check Engine Light Due To Low Compression
Aug 13, 2015
I have a 2005 Toyota 4Runner. 355,000 miles. No problems with it until now. About 2 weeks ago Check Engine Light came on. I replaced spark plugs (they were due), checked coils and fuel injectors and still have Check Engine Light on with code P0301 (Cylinder #1 missfire).So compression tests were done and cylinder #1 had 120 psi and others 170. I suppose 120 isn't terribly bad but is significantly lower than 170.
Question 1: If I reset the check engine light (turn it off), do you think it will pass California smog test?
Question 2: What do I need to cure the problem? Engine rebuild? JDM? or retire the truck?
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1989 toyota 4runner. O2 sensor is bad and has the check engine light on. No need to spend $100+ on the sensor. Is there a way to disable it so the light goes off?
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I have recently had about $1620 worth of work done on my 2000 4Runner because the check engine light came on and the code was P0420.. My invoice says they replaced the exhaust pipe assembly. Now 2 weeks later the light is back on with the same code...are the 02 sensors part of the "exhaust pipe assembly" or are they now going to tell me I need a bunch (2-4) 02 sensors replaced.
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Some background. I have a 1998 Toyota 4Runner V6 2WD with about 150,000 miles. A few months ago the check engine light was flashing when I am travelling over 70mph. The dealership said nothing is wrong when I asked them to look into it. But I didn't get any codes from it. I read on-line that it could be a possible misfire so I changed the plugs and wires.
A few weeks ago, the check engine light came on and stayed on. I took it to a dealership to diagnosis the problem, they came up with Mass Air Flow sensor was shot. I replaced that, and reset the computer. It still comes on and flashes at highway speeds. I bought a low end computer to read the codes.
I got P300 (Random/Multiple Misfire), P302 (Cylinder 2 Misfire) and P305 (Cylinder 5 Misfire). Cylinder 5 has the coil-pack and Cylinder 2 has the wire coming off the coil-pack for Cylinder 5. So I replaced the coil-pack. The light is still coming on and flashing. How to stop the light from flashing. It comes on only when I am travelling past 70MPH. I have tried just rev'ing the engine up to the same RPM's as I am running when doing 70, but the light doesn't flash then.
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I have a 2001 toyota 4runner 6-cylinder 3.4L engine with about 197xxx miles on it. I just took it in for an oil change a few weeks ago and when they checked all the other fluids in the truck they said the coolant seems sludgy and dark. Also the check engine light and vsc trac and vsc off lights came on, a week or so before the oil change. I'm pretty mechanically inclined and do almost all my work myself with the limit of the tools i have, but i can't seem to figure out what is causing this.
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Our beloved 2004 Subaru Forester has the check engine light on. We've been told that the 4th cylinder has either low or no compression. Is this fixable/worth fixing? Would you replace the engine? The car has 183K miles on it, and runs great! It is stuttering now, due to this issue, but otherwise - runs great and is in good condition!
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About a week ago I was driving my Pontiac 2003 Grand Am V6 and it began to violently shake and the "check engine light" came on and started blinking. I then immediately took it to the mechanic It has been with the mechanic for 6 days and they were unable to locate the problem. They called me today and I was told that I have no compression in one of the cylinders (I have done business with them before and felt comfortable in that I wasn't being taken advantage of). Also, is there any problems in the future with getting a cylinder replaced i.e. other parts of the engine that might correlate?
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2006 Subaru B9 Tribeca, 160,000 miles. Misfire throws check-engine light twice daily, compression leak, getting worse. Valve job? or trade?
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With vehicle engines in the past, I have used a compression check as a fundamental part of routinely checking the wear on an ICE. My usual method was disconnecting the ignition, removing spark plugs, inserting the compression gauge line in a spark plug hole, and turning over the engine with the starter. How exactly do I do that sequence with a Gen 3 Prius?
If that method is not feasible, would a "leak down" method of checking compression such as we did on old aircraft engines possibly work with the Prius ICE? To do that I would have to be able to carefully position the crankshaft so that the intake and exhaust valves were fully closed on each cylinder in turn. What is the safe method to do that with the Prius ICE?
Exactly what the compression reading should be? I am assuming that if the engine is spun at 1000 rpm by MG1, the correct reading would be 13 to 1 or 13.5 to 1. Or?
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My car engine wont turn over. I can hear the starter going when I turn the key but the engine wont start. My battery is old and when I read volt meter in my car the line is right in the middle. When I tried getting jump started by a friend the engine still wont turn over. I'm wondering if this is due to a bad battery that drained because of cold weather or something else. 1995 Toyota 4runner 251,900 miles...
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It is a 1999 Toyota 4 runner SR5, not sure when last changed out fluid and filter. Why would my engine vibrate at 52mph and above? Once I take my foot off rthe gas it stops untl i press gas pedal again. I have had the front end alignment done and the tires checked.
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My 2005 Toyota 4Runner has the 4.7 V8 and in the last week or so, the charge indicator light on the dash has been intermittent and then suddenly on always. I started searching around and pulled the batt cables and cleaned the corrosion. The charge light has remained on and when I start it up, it almost gets to operating temp and then lights, radio, heat etc. all begin to shutdown. Then the dash lights up like a Christmas tree and shortly thereafter, the tach drops to zero, the engine sputters and then dies and will not start again until I disconnect batt cables and reconnect.
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I have a 2000 Toyota SR5 with a 6-cylinder engine. When I first start the car (cold start) in the morning it will run at high idle (1500-1800 rpm) for about 3-4 minutes. At this point, the idle will begin to drop, but then the engine starts to surge. It's a noticeable surge that bounces from around 900-1100 rpm. It almost seems like an electrical surge, but I don't believe that's the problem. After running the car for a while and it's fully warmed up to operating temperature, the surge goes away. My thoughts automatically went to the IAC (idle air control) or maybe a temp sensor?
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I have a 1997 Toyota 4Runner SR5, 6 cylinder with 188,000 miles. I love my car, it's treated me well over the years. About 2 months ago it started stalling at stop lights, etc. Basically, any time I came to a stop and it was idling while in gear. I start it right back up and when my foot's on the gas, it doesn't stall. After 10 times or so I learned that if I took it out of gear the RPMs went up a little and it didn't stall. About 2 weeks later the "check engine" like went on so I figured, now it's time to take it somewhere. So I took it to a mechanic that I've been to before and trusted (here in San Francisco) and he said, "oh.. it's probably just an idle adjustment" so I think, great, no big deal.
After a few days he said wasn't the idle and that after testing he found that all 6 cylinders were randomly misfiring. So he needed to change the spark plugs cause they were down to a bare nub. I figured, ok, it's about time anyway. He said it could also be the ignitor?, he didn't sound 100% positive, but told me there's probably something wrong with it since it's pretty old too and that's all he could think of. So he changed all 6 spark plugs and the ingintor and the engine light was still on. It was stalling less frequently, but still randomly stalling.
He then said he was going to have his Toyota specialist friend look at it. His friend couldn't figure out what was wrong either. Then he sent to to the Toyota dealer, they checked everything they could think of, but couldn't diagnose the real cause either. Apparently they even checked the "Dynamic Balancer"? I'm not even sure my car has one of those. They might as well have told me it needed a new agonculator (totally made up word) for all I knew. So they had my car for 3 weeks and finally I said, enough is enough, these guys can't figure it out. After 3 weeks of hearing how much money they spent on other people to figure out it, I finally said, let's stop the bleeding. The car still runs and doesn't stall that much. The last thing they tried was 2 series of a fuel injection flush (decarbonize)? So they did that with not a whole lot of improvement. They also managed to run all the gas out of my car and by the time I picked it up, the fuel light was on and I took it immediately to a gas station. No joke, they burned about 1/2 tank of gas and didn't refill it.
After 3 weeks and $1000, they come up with "we don't know what's wrong, but use Premium gas and it might fix itself". In the end they told me they were down to only one misfire, cylider #4. Also, the "check engine" light is still on. Since I've gotten it back it hasn't stalled, so there's an improvement. But I'm no closer to figuring out what's wrong that's keeping the check engine light on. Needless to say, I'm not taking it back to these guys.
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This is a California car that won't pass smog tests with a lit check engine light. I don't know the specific code, but the description is that the torque converter is staying in the "off" position. Apparently the lock up torque converter is part of the emissions system in that if the torque converter does not lock up then the rpm's are higher and that produces more pollutants.
1st step was to flush out the transmission and the flush made sure all the fluid in the torque converter was removed and replaced. After that was done the trans fluid has stayed nice and clean and pink for about 400 miles. The CEL was turned off after this service but came back on in a few days at about 200 miles. Next, the solenoid that activates the torque converter was replaced. The CEL was turned off again, an this time the CEL came back on after a hour of driving on local errands.
Me and my generally good mechanic are hung up now. We were betting the solenoid change out would solve the problem. It seems that the torque converter is in fact operating properly. The tranny shifts smoothly and the rpm's drop at the proper times indicating the torque converter is locking up.
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At a service station in NJ, my gas cap flew into the wind and the attendant replaced it. My check engine light came on a day after getting gas (not in NJ) so I took it in to my garage. Ends up that the (new) gas cap has a crack and a new one is getting ordered. Now, whenever I am filling up the gas tank, it keeps shutting itself off (very frequently . . . like every 1/2 gallon or so). This happened when the check engine light was on and after it was initially turned off by the mechanic. I asked a mechanic at the garage because it keeps happening and I can't fill the car fully and he said it happens with some cars and you have to hold it a certain way or something. This can't be fixed and I'll just have to get used to it until I get a new car. My question -- how could this have just started happening? Its a 2002 Corolla and I've had it for years without problems. Is it possible that when I get a new gas cap and the computer gets re-started, it will fix itself?
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Recently the hatch on our 98 Toyota 4Runner wouldn't "click" closed- my husband had to secure it w/ a rope for the ride home. Took it to the dealer the next day where they "degunked" it. Now it latches, but the open door/hatch indicator dash light is constantly on - the repair tech said he didn't know why or what to do about it! My concern is that the battery is being drained.
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The mechanic told me the oxygen sensor needs to be replaced but it is not an essential item. Can this be bypassed in order to have the car pass. Its not a safety issue. My car is a 98 and has 147,000 miles on it. It leaks oil, power steering fluid, the heat does not always work and I am shopping for a new car and do not want to spend money on anything not needed
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I have a Toyota Corolla 96. The check light is on. I took it to AutoZone and the guy told me everything is Ok. I looked the oil level this morning and it was low. The temperature sensor is normal and the car runs fine. My car experience is almost zero....
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I have a 2000 Toyota Camry that has a unique problem. The Check Engine light NEVER comes on even when first starting the car. I have access to a scanner and know that the car periodically throws a catalyst code but the light never comes on. I just assumed that the bulb was burned out.
Today while solving a non-working clock issue I had to take the instrument cluster to get to the clock. While I had it out I decided to check the Check Engine Light bulb. It looked fine so I took I replaced it with a bulb that I knew worked fine. Again, nothing. The bulb doesn't light at all. About 4 weeks ago my timing belt broke while driving (non-interference motor) and it threw a code for the camshaft position sensor but again the light never came on.
Why the light never comes on?
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My girlfriend's 2001 Toyota Corolla has a recurrent Check Engine light problem. It has 144,000 miles on it. For the last few years, we have been unable to keep the light turned off. We have replaced the oxygen sensors and cleaned the MAF sensor. Our mechanic can't find the problem.
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