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Guest
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 Posted:
Thu Dec 08, 2005 2:43 am Post subject:
00 Sienna Misfiring |
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Noticing the engine light on, I took my sienna to autozone for
diagnosis. They informed me that there were multiple engine misfires
and to change the plugs. I changed cylinders 2,4,6,and 5...but am
having a hard time with 1 & 3 as they are against the firewall under
the intakes. Any suggestions to get to them?
Chris
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Ray O
Guest
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| Posted:
Thu Dec 08, 2005 3:06 am Post subject:
Re: 00 Sienna Misfiring |
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<cshort@brownelevator.com> wrote in message
news:1133988180.610001.135350@g44g2000cwa.googlegroups.com...
| Quote: | Noticing the engine light on, I took my sienna to autozone for
diagnosis. They informed me that there were multiple engine misfires
and to change the plugs. I changed cylinders 2,4,6,and 5...but am
having a hard time with 1 & 3 as they are against the firewall under
the intakes. Any suggestions to get to them?
Chris
Can you reach them from underneath the vehicle! |
--
Ray O
correct the return address punctuation to reply |
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Gary Eickmeier
Guest
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| Posted:
Thu Dec 08, 2005 6:53 am Post subject:
Re: 00 Sienna Misfiring |
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cshort@brownelevator.com wrote:
| Quote: | Noticing the engine light on, I took my sienna to autozone for
diagnosis. They informed me that there were multiple engine misfires
and to change the plugs. I changed cylinders 2,4,6,and 5...but am
having a hard time with 1 & 3 as they are against the firewall under
the intakes. Any suggestions to get to them?
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Dealer.
Gary Eickmeier
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qslim
Guest
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| Posted:
Thu Dec 08, 2005 8:22 am Post subject:
Re: 00 Sienna Misfiring |
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Man, dealer nothing!! Way to give up there, Gary!! Anyone with a basic set
of hand tools can change freakin spark plugs. It's not like he's changing
out an inverter on a Prius for Christ sake!
Anyway, pull the pcv hose out of the way and disconnect the 12mm bolt
securing a ground strap to the right side of the intake manifold surge
tank. Then you can get a 3" extension with a sparkplug socket under the
manifold and into the plug tubes. Snake a ratchet in there, and you're
good to go. It's a pain in the ass, but it's doable. Post if you need
more help.
"Dealer"....... sheesh. |
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Gary Eickmeier
Guest
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| Posted:
Thu Dec 08, 2005 8:58 am Post subject:
Re: 00 Sienna Misfiring |
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qslim wrote:
| Quote: | Man, dealer nothing!! Way to give up there, Gary!! Anyone with a basic set
of hand tools can change freakin spark plugs. It's not like he's changing
out an inverter on a Prius for Christ sake!
Anyway, pull the pcv hose out of the way and disconnect the 12mm bolt
securing a ground strap to the right side of the intake manifold surge
tank. Then you can get a 3" extension with a sparkplug socket under the
manifold and into the plug tubes. Snake a ratchet in there, and you're
good to go. It's a pain in the ass, but it's doable. Post if you need
more help.
"Dealer"....... sheesh.
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Dealer.
Gary Eickmeier |
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njmodi
Guest
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| Posted:
Fri Dec 09, 2005 12:50 am Post subject:
Re: 00 Sienna Misfiring |
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You don't have spark plug wires (in the traditional sense). It's either
the plugs, coil packs or could even be a faulty fuel injector. What
plugs did you use as replacements?
Nirav |
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qslim
Guest
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| Posted:
Fri Dec 09, 2005 5:15 am Post subject:
Re: 00 Sienna Misfiring |
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You know what, there is a TSB involving coil replacement for the 1MZ-FE in
some Camrys and Solaras the display a misfire code. I do not remember if
the Sienna is involved. But in the meantime what you can do is switch your
coils around and see if the misfire moves with them. Your van should only
have coils on the front bank, which are cylinders 2, 4, and 6, with plug
wires going from each coil to cylinders 1, 3, and 5. Changing the coild is
real easy, just pop the 10mm bolt securing the coil, unplug the connector
and pull it out. If you shuffle things around and the same codes persist,
you don't have a coil problem. I'll check that TSB tomorrow. I'm curious
now. |
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Guest
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| Posted:
Sun Dec 11, 2005 1:55 am Post subject:
Re: 00 Sienna Misfiring |
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I changed all the plugs still ruinning rough. Last Autozone diag was
cylinder misfires cylinder #3, changed plug, all new now...if cylinder
3 is still bad, gonna change the wires, coil last |
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Ray O
Guest
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| Posted:
Mon Dec 12, 2005 9:19 am Post subject:
Re: 00 Sienna Misfiring |
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<cshort@brownelevator.com> wrote in message
news:1134323407.830785.58620@o13g2000cwo.googlegroups.com...
| Quote: | **Update** Installed all new plugs and wires. Engine check light is
still on, blinks at steady higher rpms. Running almost like its
choked, but is driveable. Any suggestions where to go next?
|
Bosch makes good products but people often have problems with their ignition
parts in Toyotas. Stick to Denso plugs and ignition parts.
The flashing light, assuming that it is still misfiring, means that the
system has detected at least 1 misfire every 200 RPM, with the possibility
of catalyst overheating. An overheated cat is a BAD thing because it can
ruin the converter or worse, start a fire.
Possible causes are:
The ignition system, including plugs, wires, coils. Install new OEM parts
and check to make sure the low voltage wires to the coils are solidly
connected.
EGR, injectors, valve clearance, ignition timing are other possible causes.
If the new OEM parts do not resolve the problem, you need to take it to a
shop, preferably a Toyota dealer, with a more advanced OBD II diagnostic
tool (one that does more than just give trouble codes), an oscilloscope, a
factory repair manual, and factory trained technicians.
--
Ray O
correct the return address punctuation to reply |
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