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Toyota Matrix Engine Questions

69 messages,  Last post on Oct 04, 2009 at 10:08 AM

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#20 of 69 Re: idle hunting in matrix/vibe/corolla when cold [dorvalp] by lamarcho Jul 23, 2007 (10:06 am)
Replying to: dorvalp (Apr 19, 2007 12:19 pm) I have the same problem with Corolla S 2003. Patrick, it's been 2 month that the reloaded the firmware, does the problem reapeared?   Thanks very much for your help Replies to this message: dorvalp (Aug 06, 2007 2:07 pm)
#21 of 69 Re: idle hunting in matrix/vibe/corolla when cold [lamarcho] by dorvalp Aug 06, 2007 (2:07 pm)
Replying to: lamarcho (Jul 23, 2007 10:06 am) Until now it is OK... I hope it will still OK this winter too...
#22 of 69 Odd knocking noise by etnpnys Aug 07, 2007 (4:39 pm)
Hi all. I have a 2005 XR with an auto trans. I absolutely love my Matrix - I think every family needs one of these and a truck.   Anyway, I'm posting because although I absolutely love the car, I encountered something odd around 30k miles: a strange rattle-like sound started coming from the top of the passenger side of the motor. Now, being from a family of mechanics and having built numerous American muscle cars in the past, I knew that a knock was serious bad news. It seemed to happen most when the engine was *almost* fully warmed up, but not so much when cold or warm. It honestly sounds a little like somebody is shaking a spraypaint can under the hood.   I took it to two different dealerships; one said they couldn't hear it (in his defense, it was a lot quieter at that particular time) and the other dealership said that the only thing they can figure is that it's the tensioner (which is around that area anyway).   I now have over 110k miles on the car, and *I drive this thing hard* - like it was a Subaru WRX STI. The noise has not gotten any worse or any less since its inception (though sometimes it varies a little without reason) - but I have grown accustomed to using higher octane fuel in an attempt to combat the problem.   Does this sound familiar to anybody out there? One time it was so prevalent that my father-in-law walked past his driveway and asked what was wrong with my car...   Ideas?   EDIT: I have done all maintenance myself - every 5k miles like clockwork. I have replaced the plugs recently and I am still using 5w-30 Castrol GTX or Valvoline at every oil change. I installed headers onto the car around 75k miles, but they didn't affect the noise at all. Replies to this message: yellowmatrix09 (Aug 01, 2009 12:10 pm) etnpnys (Aug 03, 2009 5:24 am)
#23 of 69 Engine Heat Issues by moontom Sep 03, 2007 (5:52 pm)
I'm a newbie here, but couldn't find anything on this. just purchased on '08 Matrix xr, and today after about 35 mins of stop/go driving around town, I popped the hood to make sure the fluid levels were right (going back to the dealer for a few things tomorrow). when I tried to prop up the hood, the black spindle that props the hood was really really hot. facing the engine, it's on the left side of the engine bay, and it did seem all the metal I touched around that area was really hot. too hot to touch.   is this normal?   is there any sort of "fix" for it?   thanks in advance for any/all help....   tm Replies to this message: nippononly (Sep 04, 2007 11:07 am) etnpnys (Sep 04, 2007 12:12 pm) moontom (Sep 04, 2007 4:55 pm)
#24 of 69 Re: Engine Heat Issues [moontom] by nippononly Sep 04, 2007 (11:07 am)
Replying to: moontom (Sep 03, 2007 5:52 pm) It is normal for anything metal under the hood to be very hot to the touch immediately after driving around. You should be able to use the hood prop, however, but not to hang onto it for several minutes.
#25 of 69 Re: Engine Heat Issues [moontom] by etnpnys Sep 04, 2007 (12:12 pm)
Replying to: moontom (Sep 03, 2007 5:52 pm) I agree with moontom. I have a Matrix and do my own maintenance. Yeah, that thing can get kinda hot, but I'm only touching it for about 5 seconds at a time, and I try to focus on the little plasticky-rubber thing at the end that inserts into the hood. Replies to this message: moontom (Sep 04, 2007 4:55 pm)
#26 of 69 Re: Engine Heat Issues [etnpnys] by moontom Sep 04, 2007 (4:55 pm)
Replying to: etnpnys (Sep 04, 2007 12:12 pm) I've had lots of toyotas and recently a mazda 3, and all would get somewhat hot, but not to the point where you pull yr hand away trying to just prop up the hood. the temp gauge seems fine so I'm not going to worry. but when it's time to work on this puppy I will find a shady spot and proceed with caution.   thanks for the insights!
#27 of 69 Re: Engine Revving [matrixreloaded] by notme Sep 04, 2007 (7:27 pm)
Replying to: matrixreloaded (Mar 22, 2007 8:25 pm) Check the color of the ECT sensor plastic portion. If it is black the problem is the sensor. Change to the gray sensor. The female vehicle connector will plug into either sensor even though they have different raised keyways on them. It worked for my '03 Matrix XR
#29 of 69 03 Matrix XR AWD, losing power?? by tkerr Oct 02, 2007 (9:03 pm)
My matrix is as gutless as the rest. (more-so with the AWD) But recently when getting into the passing lane, or climbing up a hill, the engine RPMS will start to rise, then quickly drop back 1500 RPM with the pedal fully depressed, in about 5 seconds the RPMS climb to about 5000 but the car does not pick up speed. Had it hooked to a cpu but no issues were found even when this event happens. Put in some injector cleaner, with a full tank of gas...see what happens I guess....Any suggestions??? Replies to this message: kiawah (Oct 03, 2007 5:10 am) tkerr (Oct 03, 2007 5:55 pm)

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