Last post on Jul 26, 2013 at 4:27 PM
You are in the Toyota Matrix
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Toyota Matrix, Engine, Wagon
#65 of 74 Re: Odd knocking noise [etnpnys]
Aug 01, 2009 (12:10 pm)
I have the same problem with my 09 Matrix XR. The standard fuel requirement in the manual was 87 octane. With the onset of the hot weather, the engine ping or knock has come out. No results have come out too from my dealership's computer diagnostics (whatever that may be...I don't see it). When I shifted to 92 octane premium gas, the ping lessened considerably but you could still hear a little bit of it especially when my aircon is on...This engine ping or knock can be deceiving to a mechanic if he doesn't roll down the windows and pass through a place where there is a wall on either side of the front seats. If you've got your windows rolled up, you will not hear them. I believe Toyota's body insulation helps in covering up this noise. I guess Toyota must have to admit that the XR's should be using premium 92 octane gas instead of the manual's 87 octane because of the high compression ratio...I don't like to live with using 92 octane because it is more expensive. If I knew it, I wouldn't have gotten this car....still up for a resolution on this case...
#66 of 74 Re: The continuing head gasket saga [ttropical]
Aug 01, 2009 (2:50 pm)
I own a Chevrolet and the same thing happened to me.
I don't want to brag about it but the "head gasket" on my 2005 Equinox blew at 29,000 K. That's 39 K's less than your Matrix.
My warranty was over by 1 month (isn't that a coincidence) I called G.M. and they didn't do a thing about it, they almost told me to shut up and pay for my repairs.
My 1999 Venture... the same thing, 3 months after my warranty was over.... "blown head gasket" at 42,000 k
I'm like you, if I could bring my cars in the house I would. I drive my vehicles with love, I'm not a lead foot driver, follow the speed limits and always doing my maintenance regularly.
Yes the same thing happens in Chevrolets.
(By the way, seriously, I was thinking of trading for a 2010 Matrix next year).
#67 of 74 Re: Odd knocking noise [yellowmatrix09]
Aug 03, 2009 (5:24 am)
Yes! Exactly! Wow... You can't know how much of a relief it is for me to see that somebody else knows what I'm talking about. Like I said: I had one guy at a Toyota dealership tell me that it was the belt tensioner - that he'd seen them have to replace a few of them around 30k-40k miles.
...But that doesn't make sense; that thing shouldn't have any moving parts at all. And if you check very closely under the hood you can almost pinpoint it to the furthest left cylinder (the one on the passenger side - I forgot the cyl #) right under the head.
For what it's worth, the car is still running great at 155k. I put 89 octane into it regularly and, like you said, the ping is lessened.
...Now I have an airbag light coming on that's driving me crazy - but I really think that everybody on this board is just going to say "you need to get it serviced and have the airbags looked at." Well duh. But they're just mechanics - and so is half of my family. What are THEIR mechanics going to find wrong? I did a diagnostic myself by shorting two pins on the OBDII connector and getting the error code. I looked up that error code and it said something about my passenger side airbag isn't initializing properly - but it doesn't come on consistently! Perhaps a fuse that needs to be replaced? I dunno.
Oct 04, 2009 (10:08 am)
2003 Toyota Matrix idles rough after engine warms up. Diagnostics code shows it misfiring on all 4 cylinders. It started after I washed engine compartment. Could this be a coil problem or arcing of the spark plug boot? I have taken it to the dealer and they stated it was a fuel problem and run a few tanks of good fuel through it. This did not help. Any suggestions?
#70 of 74 Re: '09 Matrix 5-Speed / Intermittent Idle Drops [ne07fjc]
Jan 26, 2010 (10:35 pm)
I want to tell you I own a corolla 2009 ce with manual and it does the same thing I have 7000 miles on car GULF STATES TOYOTA TECH tells dealer to erase ecm update re learn customer habits they are fishing I still have problem . It does this not all the time but when it happens it's alway when coming to astop. It feels like when you take off like the clutch engages but the opposite you are coming to a stop The tach shows the nedle about 900 rpm's then it drops also slight miss not smooth right I believe toyota knows there is an issue but won't admit and hope you just fade away I believe there promblem is electronics and these car are built here with crap parts from americans I have a toyota truck made in Japan 1995 she been faithful no promblems in 15 year and also when thru a flood totaly submerged just passed inspection after all this since 2000 Please respond back I LIVE IN TEXAS
#71 of 74 2005 Matrix XR Engine Fade/Increase Problem
Mar 13, 2010 (5:11 pm)
Wondering if anyone has come across this problem: At speeds between 60-70 mph, without letting up on the gas pedal, the engine will lose about 3 mph of speed. After 10 seconds the engine will either come back at the original speed I was on OR it will increase to the point where I have to either let up on the gas pedal or tap the brake. This problem started in October, 2009 when the car had 24,980 miles. Took it to dealership, they said the computer didn't show any error codes. Problem kept occurring. Took it in again in February, 2010 and told them I was having same problem. They wanted me to ride around with a tech, didn't have time. Had them do the 30,000 mile service hoping that might clean it up. It has not. Any suggestions?
#72 of 74 engine problem
Sep 15, 2010 (1:55 pm)
hi i had a similar problem with my 04 toyota matrix i could hear a knocking noise and couldnt figure out where it was coming from i had it looked at, and had it tested and not one place or person could figure it out on what it was. i got mad and took motor out and took the whole thing apart come to find out it was a main engine bearing that came lose and got chewed up some how my piston bolts came lose on the 4th cylinder so now begins the process of putting it back together. so figured maybe if any one had a similar problem so mine maybe this would help
#73 of 74 Re: idle hunting when cold on Matrix/Vibe/Corolla [montreal3]
Jan 27, 2011 (8:14 am)
I have a 2003 vibe stick with 208k and have just started having this same problem. when cold as engine warms up it starts to hunt just as you discribed. would like to know how to fix if possible.
#74 of 74 Question....please help!
Jul 26, 2013 (4:27 pm)
I'm putting back together a 2007 matrix, but there is one plug I cannot find any receptacle for....
It's a plug leading from the wiring harness which feeds the ignition coils. At the timing-chain-end of the engine, a smaller wiring harness extends from the #1 ignition coil...it's about 16'' long and end in a plug that I can find no receptacle for. Can someone please look under their hood and tell me where this plug is supposed to go???
Thank you so much....in advance