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Wagons Subaru Crew Subaru Impreza Subaru Impreza Maintenance & Repair Subaru Impreza Engine Problems
241 messages, Last post on Nov 26, 2009 at 5:37 PM
You are in the Subaru Impreza Maintenance & Repair Forum. Your Host is kcram
Gooday all, I have a 2002 WRX that I'm in love with, ha ha. Only thing is, I'm havin some interesting fuel problems (I'm pretty sure anyway) and was wondering if any of you could help. My original problem was that it had trouble starting, I would have to crank it for a few seconds before it caught and started. The check engine light would come on and off, and eventually stayed on. I brought it into the dealership, they did a compression test and found that the #3 cylinder is firing low. They replaced the fuel pump, spark plugs, fuel lines and it seemed to work alright after this. (Luckily it was under an extended warranty, so the cost wasn't too bad!) Anyway, that seemed to fix most of the problem, but now it's kind of going back to the old problems, after only about a month or two. For about the past few weeks, the check engine light came back on, and it was hard to start, and now it's off and it's acting fine. Can anybody shed any light on this or if anybody has had anything similar happen?
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Replying to: kabuji (Sep 15, 2008 8:07 pm) It's most likely the head gasket or the piston ring. Something is not sealing, basically. Fuel pump, spark plugs, and fuel lines have no effect whatsoever on the compression.
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Replying to: ateixeira (Sep 16, 2008 12:10 pm)
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Replying to: kabuji (Sep 20, 2008 7:16 am) Instead I'd think the problem is related to the evapo/checkvalve that keeps fuel in the lines. The CEL if it's one for the emissions system will show what's up with it. Try this next time you start your car, put the key into the "on" position for 5-10 seconds before starting. If it doesn't give you a problem there is a check valve in the fuel system that has failed. -mike |
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| I recently purchased a new '08 Impreza 2.5i 5-dr hatchback (auto transmission), and now have about 2300 miles on it. After about 1500 miles I began to notice some mild engine knock or pinging when the engine's under load (going up hills, or acceleration). More noticeable when car is warmed up, or outside temp is warm. This has persisted through several tanks of regular (87 octane) gas -- and I currently am trying 89 octane gas to see if it makes a difference (so far, no). And yesterday, the car didn't start on the first try (cranking, but didn't catch), ok 2nd try. I will be taking it to the dealer -- but want some other opinions first. I don't think the engine on a new car should be pinging. I am enjoying my Impreza, but am worried about engine problems this soon. | |
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Hi, I have a 2007 subaru impreza 1.5 engine, automatic (1000 miles on it) . It is a great car when it works. If the weather is too warm (above 77 degree Fahrenheit) or cold (below -2.2 degree Fahrenheit), I cannot start the engine. The engine makes very weak sound than usual. The engine light does not behave strangely. (A subaru mechanic said that if something was wrong, the engine light would have been on.) It is like the battery is very low or there is no gas in the gas tank. If the engine catches on, it dies by itself if I do not step on the gas pedal. First, I had the cold weather problem. The subaru service in Turkey replaced oxygen censors and installed a quick start program a couple of months ago. ( I thought that they would run some full checkup to see what the problem was) There is a 2008 subaru impreza in Kars (the city I am living at) and that car does not have these kinds of problems (She is using the same gas, etc.) Thanks Mehmet
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I want to change my own oil to save a few $$ and priced out a filter at a local auto parts store. I then checked the dealer price and it was actually lower. So I got the dealer filter. Got set up to do the change and I took the new filter out of the box, and just on a whim, compared it to the filter in place, holding it up under the the old one. It was smaller, not as wide in circumference as the one there. So doing this for the first time, I decided to wait. It was a Friday night and I had to work Saturday and could not call the dealer to question if I had been sold the right filter. Is it possible that it is the correct one and it fill work? Also I have heard that those quick change oil centers use a lower grade oil, hence the lower price for a change? Is this true and is it not a good idea to get oil changes in these places? Thanks
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Replying to: loretts (Oct 25, 2008 2:27 pm) -mike Motorsports and Modifications Host |
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Replying to: merogul (Oct 25, 2008 8:47 am) When you first attempt to start, turn the key to the "on" position for a couple seconds before actually trying to crank it. That will give the fuel system time to pressurize. I would not think oxygen sensors to be a possible problem, as I thought they did not provide feedback until after the car reached operating temperature - perhaps someone can correct me if I am wrong. The one time I had serious issues with cold starting (in any weather conditions), it was a result, I think, of a faulty knock sensor, perhaps in combination with the crank and camshaft sensors. The computer threw a code for the camshaft sensor when that happened, but I replaced all three simultaneously due to some other issues that lead me to suspect the other sensors may be co-conspirators, and all problems were resolved. I am not recommending that you start throwing all those parts at the car, but you might consider having your knock sensor tested and/or replaced. As yours should be under warranty, it might be more difficult to get the shop to test for these things, but the car is obviously not running right, so keep on it to seek satisfaction. It is frustrating when a shop can only diagnose a car based on the computer or a factory T.S.B. Good luck! |
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I would like to thank you for your response. Last winter, I have tried your suggestion which is turning “the key to the "on" position for a couple seconds before actually trying to crank it”. However, it did not help anything. I also checked the voltage of the battery a couple of times. Nothing was wrong with the battery. I will go to the Subaru service in December and ask them about the knock sensor, the crank and camshaft sensors. I am not sure if they sell block heater and stock batteries in Turkey. I think my car is getting worse. Most of the time I have to step on the gas pedal while starting the engine. If I do not do that, it either does not start or dies itself after the engine starts. When I push the gas pedal half way before turning the key to start engine, the car starts perfectly as it should. Sometimes, the engine starts and waits at the 200-300 RPM about 3-4 seconds before going to 1500-2000 RPM. This is a small city and I am driving my car slowly around 2000RPM. Can this cause these kinds of problems? What would be the appropriate RPM for my 1.5 engine automatic subaru impreza? Thanks. |
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