|
02-14-2013, 10:16 AM | #1 |
Drives: Yaris 1.4 D4D Join Date: Feb 2013
Location: South Wales
Posts: 3
|
Yaris fault???????
Hello all.
I have been experiencing a problem with my 1.4 D4D TR since new. Frustratingly, returns to the dealership have not provided any kind of explanation. The "problem", if it is a problem, is cyclic. For the first 6 or 7 months, about every 300 miles, usually per tank of diesel, the instant economy figure drops, it will not get above 50 mph, whereas it would be running happily on A roads at 75 mpg. This phenomenon will last for exactly 15 minutes and has the effect of reducing the overall mpg figure, for the fuel used to date, from maybe 70 mpg to possibly 59 mpg. The other symptom of this problem is increased engine idle speed, up to 1000 RPM from the usual 950(?). Despite a couple of returns to the dealership, I cannot get any explanation for this fault. I had it serviced recently, and the cyclic event is now occurring every 200 miles! Plus, the service light developed a life of its own, and decided to light up sporadically. Again I returned the car to to the Dealership explained the problem, complete with emailed explanation. They found that the oil had seemed to have been over filled (or increased somehow) drained and refilled it & asked me to try it for another 500 miles. It is no better, the diesel guzzling continues in the 200 mile cycle. I had a D4D Auris for 3 years prior to this, no such problems with this car. Can anyone please throw any light on this, before it drives me completely mad??? |
02-14-2013, 12:49 PM | #2 |
Drives: 2010 3dr yaris Join Date: Jan 2013
Location: Palm bay,Fl.
Posts: 117
|
I always thought if the light comes on they can get the code and try to correct the problem. With the oil increasing I do not know enough about motors, only thing I can think of is water coolant getting or gas, but that should be easily seen if that was the case in the appearance of the oil.
|
02-14-2013, 03:07 PM | #3 |
Drives: Yaris 1.4 D4D Join Date: Feb 2013
Location: South Wales
Posts: 3
|
Thanks for the reply foot.
The spanner light coming on didn't provide a fault in the diagnostics, the just kept resetting it until eventually they replaced the oil to the correct level. Since then the light has kept off. I don't think there is any ingress into the sump oil, I am more inclined to believe they over fllled it during the service. They asked me if I had topped it up at any point, but I hadn't. What I am really trying to find out if anyone else with a 2012 D4D Yaris TR is experiencing this diesel guzzling cycle??????? |
02-14-2013, 03:44 PM | #4 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
For the high idle behavior, the nine items below are what the service manual for the D-4D lists as potential causes:
1. A/C signal circuit - 2. Injector 3. Cranking holding function circuit 4. ECM 5. Supply pump 6. Fuel pressure sensor 7. Pressure control valve 8. Engine coolant temperature sensor 9. Fuel temperature sensor You might want to invest in a code reader, so you can read the codes when the light comes on, particularly if what is causing it is intermittent.
__________________
|
02-14-2013, 03:55 PM | #5 |
Drives: Yaris 1.4 D4D Join Date: Feb 2013
Location: South Wales
Posts: 3
|
Thank you Mr Scott!
You would think the dealeriship wold have given me a hint at these possible causes. I think you are right about the code reader, but I have never seen a fault light illumiated. The dealers told me there we no faults logged, but I think I will check myself. Also, although intermittant, this problem is cyclic - originally about every 300 miles, more recently closer to every 200 miles, since the service & overfilling of oil. We seldom get that kind of snow here, by the way, love the snow plough! Last edited by StuartM; 02-14-2013 at 04:03 PM. Reason: typos & addition |
02-15-2013, 09:54 PM | #6 |
Only Happy When it Rains
|
so have you checked to see if it is just the mpg computer, or are you actually getting worse mpg?
The other question is what type of transmission do you have? Does this happen randomly when you are driving, or at start up only?
__________________
Colin Chapman disciple |
12-15-2013, 04:08 AM | #7 |
I've made a post!
Drives: Yaris 3 D4D Join Date: Nov 2013
Location: France
Posts: 1
|
what you describe is a DPF regeneration. ist should only occur every 400 miles.
|
12-21-2013, 11:50 PM | #8 |
manakorin
|
So it basically keeps on repeating itself in a particular period. I see.
__________________
rhinoplasty in atlanta |
02-06-2014, 10:06 PM | #9 |
fourty something
Drives: 2012 Yaris SE traded, 2014 Hyb Join Date: Sep 2012
Location: Louisville, KY
Posts: 6
|
The way I understand DPF's (diesel particulate filter) work is that they inject fuel into the exhaust at a given intervals to burn off the soot in the filter. The ash falls to the bottom of the filter and eventually the filter will become clogged and need to be removed and cleaned or; in a VW TDI's case, replaced.
|
02-14-2014, 03:44 PM | #10 |
Drives: Toyota Vitz 2005 Blue Auto Join Date: Feb 2014
Location: New Zealand
Posts: 4
|
sup bro do you guys know where the starter solenoid wire is in the toyota vitz 2005 push start keyless?
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
NEWS: TOYOTA REVEALS ALL-NEW YARIS SEDAN AT 2006 LOS ANGELES AUTO SHOW | VitzBoy | General Yaris / Vitz Discussion | 7 | 09-20-2023 07:50 AM |
Natural Gas Yaris | MadMax | General Yaris / Vitz Discussion | 13 | 06-03-2017 06:10 AM |
Vacationed in Italy - Brought home a D4D diesel Yaris | CTScott | Photo-Video-Media Gallery | 19 | 07-26-2012 03:13 AM |
Y Reg Yaris - P0340 fault code | zitman | DIY / Maintenance / Service | 0 | 03-19-2011 09:21 AM |