Why is my exhaust manifold glowing red?

Asked by Mar 05, 2015 at 12:19 AM about the 2001 Toyota Sienna XLE

Question type: Maintenance & Repair

A week and half ago my van started
losing power like I was taking my
foot off the gas on the expressway. I
had it towed to a muffler shop where
they put a new catalytic converter
and first muffler. Two days later The
van was running rough when I first
started it. The exhaust was
sputtering. Last night I detached the
second and final muffler. The van ran
fine on a 15 minute test drive.
Tonight on a 15 minute drive with the
muffler still detached the van ran
rough and the exhaust manifold was
glowing red again. No check engine
light, engine temp reads fine.
Changing spark plugs tomorrow but
that seems like a long-shot. Any
ideas?

2 Answers

10,380

scan the computer for codes anyway. sounds like a very rich or very lean condition. could be 02 sensor, or possibly the timing is off.

217,595

Agreed, glowing cats/exhaust is a rich condition and unburnt fuel is getting into the cats, check your spark plugs/coils and fuel system for proper operation. Sometimes a fuel injector leaks. One of those is your problem which is causing the sputtering. Fix the sputtering and the red exhaust will go away.

Your Answer

Add photo

Related Questions

  • When to change the intake manifold gasket on 2005 Toyota Sienna? 2 answers

    I just changed the spark plugs on the 2005 Toyota Sienna and what a job that was! I see that on the upper intake manifold it has a red rubber gasket. Is it necessary to change this gasket? the ga...

    2005 Toyota Sienna LE

    -

    Maintenance & Repair

  • Toyota sienna CE 2007 model,3.5 litrs having engine light, 11 answers

    Toyota sienna CE 2007 model,3.5 litrs having engine light,checked by AUTEL OBD// ,the code says P0158 (oxygen sensor circuit high voltage bank 2 and sensor 2 problem). please let me know whether it ...

    2007 Toyota Sienna CE

    -

    Maintenance & Repair

  • how do you drain water jacket on 2008 sienna? 10 answers

    Did radiator flush, but replaced with Prestone any color, not Toyota red. Two weeks later thermostat is sticking. Might be coincidence, but want to drain entire system and replace with one type of a...

    2008 Toyota Sienna

    -

    Maintenance & Repair

  • Has my Transmission gone bad? 10 answers

    When I put the van in reverse and press on the gas pedal, the rpm's increase but the van does not move very fast. I am wondering if this is stricktly a transmission problem or if this has to do with t...

    2005 Toyota Sienna XLE

    -

    Maintenance & Repair

  • What is the red flashing car on the dashboard of a 2008 toyota sienna? 3 answers

    There is a flashing red car on the left side of my dash when I turn off my car. What does this mean?

    2008 Toyota Sienna LE 7 Passenger

    -

    General

Search Toyota Sienna Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Toyota Sienna Experts

#1 Mik00000
Mik00000
Reputation 1,480
#2 Tom Demyan
Tom Demyan
Reputation 1,030
#3 FordNut
FordNut
Reputation 900
View All

Related Models For Sale

Used Honda Odyssey
411 Great Deals out of 26,834 listings starting at $1,600
Used Toyota Highlander
592 Great Deals out of 23,290 listings starting at $2,944
Used Chrysler Town & Country
542 Great Deals out of 20,223 listings starting at $2,188
Used Toyota Camry
1,215 Great Deals out of 97,664 listings starting at $1,250
Used Dodge Grand Caravan
395 Great Deals out of 34,502 listings starting at $1,995
Used Kia Sedona
158 Great Deals out of 9,167 listings starting at $1,695
Used Nissan Quest
96 Great Deals out of 3,194 listings starting at $1,200
Used Toyota RAV4
746 Great Deals out of 56,466 listings starting at $2,488
Used Toyota 4Runner
377 Great Deals out of 20,976 listings starting at $2,495
Used Toyota Tacoma
711 Great Deals out of 32,261 listings starting at $2,750
Used Toyota Sequoia
168 Great Deals out of 6,032 listings starting at $1,495
Used Toyota Corolla
1,001 Great Deals out of 69,062 listings starting at $1,595
Used Honda CR-V
879 Great Deals out of 63,178 listings starting at $1,495
Used Chevrolet Tahoe
831 Great Deals out of 28,003 listings starting at $1,700

Used Cars For Sale

2017 Toyota Sienna For Sale
15,780 listings starting at $27,338
2016 Toyota Sienna For Sale
23 Great Deals out of 1,311 listings starting at $18,990
2015 Toyota Sienna For Sale
23 Great Deals out of 1,501 listings starting at $16,494
2014 Toyota Sienna For Sale
44 Great Deals out of 1,671 listings starting at $13,900
2013 Toyota Sienna For Sale
37 Great Deals out of 1,078 listings starting at $9,995