my turn for a diagnostic

hyo silver · 09-30-2007, 07:43 PM

Oh, crap. 48,000 km and not a single problem. Two months after the warranty runs out, I've got a problem. (It's gotta be programmed into the ECU, right?) We found out the roadside assistance has also expired, so we now have BCAA instead. My wife drove the car about 700km over the weekend with no trouble, and phoned me half way to the grocery store this morning, saying there was something wrong with the car. She described it as 'like driving on a gravel road' and 'there's a light on the dash - sort of a lumpy thing'. I had her get out and check the tires, which seemed fine, but then she said there was an odd smell, too. So, I borrowed the neighbour's car and rode off to the rescue. Turns out it's the check engine light, not a good sign, and the engine is shaking noisily. It went away when I stepped on the gas, and of course when the engine shut off. Not wanting to risk it, we had it towed to the nearest dealer, and left the keys in a drop box with a note to call us tomorrow. So, it's already in good hands, I trust, but I'm curious to know what the possibilities are. Any ideas?

patsparks · 09-30-2007, 08:05 PM

Most likely an ignition fault like a coil shorting to earth or a spark plug breaking down.
It may also be a vacuum leak caused by a hose coming off or splitting.
Does it have steam coming out of the exhaust? That would be a symptom of a failed head gasket but I doubt that would be the case.
It's a pretty conventional engine really in this day and age the VVTI, direct ignition and fuel injection are very common so it wont be a hybrid problem.
Good luck with it.

hyo silver · 09-30-2007, 09:34 PM

These cars don't still use vacuum hoses, do they? I didn't see any escaped fluids or clouds of steam from the exhaust.

Further discussion reveals hearing a loud 'klunk' yesterday on the way home. Had I known that earlier, I would have taken a much closer look underneath. Life just gets better.

galaxee · 09-30-2007, 10:29 PM

sounds like an ignition issue- plug, coil, or even bad fuel. if you complain loudly enough they hopefully might take care of it, if it's only 2 months out of warranty. a few klunks are also a symptom of a misfire- especially notable when the engine is shutting down.

let us know what happens, hyo.

F8L · 09-30-2007, 11:25 PM

<div class='quotetop'>QUOTE(patsparks @ Sep 30 2007, 05:05 PM) [snapback]519602[/snapback]</div>

Quote:

Most likely an ignition fault like a coil shorting to earth or a spark plug breaking down.
It may also be a vacuum leak caused by a hose coming off or splitting.

[/b]

That was my first guess as well. I've had plenty of cars that burned thought plug wires and the car acted similarly.

hyo silver · 10-01-2007, 12:10 AM

Thanks for the replies. I haven't given you much to go on, but that's all I know at this point. I really hope it's something minor, and I'm trying not to think of worst-case scenarios. The tow truck driver said he'd never towed a Prius before, so that's good. I'll let you know what transpires when I've heard from the dealer.

hyo silver · 10-01-2007, 12:54 PM

Here's the latest, just in. Two coils, two spark plugs. Three hundred bucks parts and labour. Two months out of warranty? Too bad.

**efusco** · 10-01-2007, 03:12 PM

<div class='quotetop'>QUOTE(hyo silver @ Oct 1 2007, 11:54 AM) [snapback]519848[/snapback]</div>

Quote:

Here's the latest, just in. Two coils, two spark plugs. Three hundred bucks parts and labour. Two months out of warranty? Too bad.

[/b]

That sucks...that's certainly not a problem I've heard reported here before. Sucks they wouldn't cover it so close to warranty.

galaxee · 10-01-2007, 04:23 PM

i'd ask for the old coils back and see if they were BSing you... plugs are cheap but coils not so.

hyo silver · 10-01-2007, 04:35 PM

I already checked the 'please return parts' box on the drop-off form, and turned down their offer to change the oil. (I just did it in June with Mobil 1) I told the service writer I wasn't happy, not that it was his fault, and that I would be writing a letter to Toyota Canada. All the same, I'm kinda kicking myself for not taking the car in for a final checkup just before the warranty expired. Live and learn. But thanks for the help - pretty amazing I can get an accurate diagnosis on the internet within 20 minutes, on a Sunday afternoon in football season, no less.

09-30-2007, 07:43 PM	#1
hyo silver awaaay Join Date: Mar 2005 Location: Vancouver, BC Posts: 10,730 My Car: 2004 Prius Model: Package: Base Thanks: 47 Thanked 153 Times in 108 Posts Friends: 63	Oh, crap. 48,000 km and not a single problem. Two months after the warranty runs out, I've got a problem. (It's gotta be programmed into the ECU, right?) We found out the roadside assistance has also expired, so we now have BCAA instead. My wife drove the car about 700km over the weekend with no trouble, and phoned me half way to the grocery store this morning, saying there was something wrong with the car. She described it as 'like driving on a gravel road' and 'there's a light on the dash - sort of a lumpy thing'. I had her get out and check the tires, which seemed fine, but then she said there was an odd smell, too. So, I borrowed the neighbour's car and rode off to the rescue. Turns out it's the check engine light, not a good sign, and the engine is shaking noisily. It went away when I stepped on the gas, and of course when the engine shut off. Not wanting to risk it, we had it towed to the nearest dealer, and left the keys in a drop box with a note to call us tomorrow. So, it's already in good hands, I trust, but I'm curious to know what the possibilities are. Any ideas? __________________ My other high mileage, low emission vehicles are my bicycles and my shoes.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Diagnostic Scan Tool	New Revelation	Gen II Prius Care, Maintenance and Troubleshooting	9	08-04-2009 02:56 PM
ECU Diagnostic Codes	PriusLove	Toyota Prius Service Bulletins - TSBs	0	04-26-2007 05:05 PM
Same problem 3 times; need diagnostic help	marshaks	Gen II Prius Care, Maintenance and Troubleshooting	15	06-19-2006 06:16 PM
Does NAV give turn-by-turn directions?	VoicesInMyHead	Gen II Prius Audio and Electronics	4	06-16-2005 03:19 PM
How do we turn off the turn signal flash?	jillsidious	Gen II Prius Main Forum	9	01-10-2005 02:37 PM

09-30-2007, 08:05 PM	#2
patsparks An Aussie perspective Join Date: Jul 2007 Location: Adelaide South Australia Posts: 9,244 My Car: 2004 Prius Model: N/A Package: Base Thanks: 128 Thanked 185 Times in 143 Posts Friends: 33	Most likely an ignition fault like a coil shorting to earth or a spark plug breaking down. It may also be a vacuum leak caused by a hose coming off or splitting. Does it have steam coming out of the exhaust? That would be a symptom of a failed head gasket but I doubt that would be the case. It's a pretty conventional engine really in this day and age the VVTI, direct ignition and fuel injection are very common so it wont be a hybrid problem. Good luck with it.

09-30-2007, 09:34 PM	#3
hyo silver awaaay Join Date: Mar 2005 Location: Vancouver, BC Posts: 10,730 My Car: 2004 Prius Model: Package: Base Thanks: 47 Thanked 153 Times in 108 Posts Friends: 63	These cars don't still use vacuum hoses, do they? I didn't see any escaped fluids or clouds of steam from the exhaust. Further discussion reveals hearing a loud 'klunk' yesterday on the way home. Had I known that earlier, I would have taken a much closer look underneath. Life just gets better.

09-30-2007, 10:29 PM	#4
galaxee resident lab rat Join Date: Mar 2005 Location: boilermaker territory Posts: 9,675 My Car: 2005 Prius Model: N/A Package: #5 Thanks: 0 Thanked 94 Times in 37 Posts Friends: 26	sounds like an ignition issue- plug, coil, or even bad fuel. if you complain loudly enough they hopefully might take care of it, if it's only 2 months out of warranty. a few klunks are also a symptom of a misfire- especially notable when the engine is shutting down. let us know what happens, hyo.

10-01-2007, 12:10 AM	#6
hyo silver awaaay Join Date: Mar 2005 Location: Vancouver, BC Posts: 10,730 My Car: 2004 Prius Model: Package: Base Thanks: 47 Thanked 153 Times in 108 Posts Friends: 63	Thanks for the replies. I haven't given you much to go on, but that's all I know at this point. I really hope it's something minor, and I'm trying not to think of worst-case scenarios. The tow truck driver said he'd never towed a Prius before, so that's good. I'll let you know what transpires when I've heard from the dealer.

10-01-2007, 12:54 PM	#7
hyo silver awaaay Join Date: Mar 2005 Location: Vancouver, BC Posts: 10,730 My Car: 2004 Prius Model: Package: Base Thanks: 47 Thanked 153 Times in 108 Posts Friends: 63	Here's the latest, just in. Two coils, two spark plugs. Three hundred bucks parts and labour. Two months out of warranty? Too bad.

10-01-2007, 04:23 PM	#9
galaxee resident lab rat Join Date: Mar 2005 Location: boilermaker territory Posts: 9,675 My Car: 2005 Prius Model: N/A Package: #5 Thanks: 0 Thanked 94 Times in 37 Posts Friends: 26	i'd ask for the old coils back and see if they were BSing you... plugs are cheap but coils not so.

10-01-2007, 04:35 PM	#10
hyo silver awaaay Join Date: Mar 2005 Location: Vancouver, BC Posts: 10,730 My Car: 2004 Prius Model: Package: Base Thanks: 47 Thanked 153 Times in 108 Posts Friends: 63	I already checked the 'please return parts' box on the drop-off form, and turned down their offer to change the oil. (I just did it in June with Mobil 1) I told the service writer I wasn't happy, not that it was his fault, and that I would be writing a letter to Toyota Canada. All the same, I'm kinda kicking myself for not taking the car in for a final checkup just before the warranty expired. Live and learn. But thanks for the help - pretty amazing I can get an accurate diagnosis on the internet within 20 minutes, on a Sunday afternoon in football season, no less.