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

13,550

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.

287,225

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

Toyota Sienna Experts

  • #1
    Mik00000
    Reputation
    1,670
  • #2
    Tom Demyan
    Reputation
    1,250
  • #3
    dandyoun
    Reputation
    1,030
View All

Related Models For Sale

Used Honda Odyssey
361 Great Deals out of 36,731 listings starting at $1,499
Used Toyota Highlander
378 Great Deals out of 49,165 listings starting at $1,000
Used Toyota Camry
768 Great Deals out of 71,356 listings starting at $1,200
Used Dodge Grand Caravan
192 Great Deals out of 29,929 listings starting at $2,495
Used Kia Sedona
101 Great Deals out of 7,746 listings starting at $2,100
Used Toyota RAV4
424 Great Deals out of 75,705 listings starting at $1,500
Used Toyota 4Runner
251 Great Deals out of 33,481 listings starting at $2,900
Used Chrysler Town & Country
200 Great Deals out of 12,970 listings starting at $899
Used Nissan Quest
54 Great Deals out of 2,163 listings starting at $2,000
Used Toyota Tacoma
412 Great Deals out of 44,883 listings starting at $1,995
Used Toyota Corolla
566 Great Deals out of 67,649 listings starting at $1,495
Used Toyota Sequoia
81 Great Deals out of 4,989 listings starting at $2,300
Used Honda CR-V
491 Great Deals out of 73,686 listings starting at $1,494

Used Cars For Sale

2018 Toyota Sienna For Sale
9,729 listings starting at $29,426
2017 Toyota Sienna For Sale
16 Great Deals out of 1,960 listings starting at $18,995
2016 Toyota Sienna For Sale
35 Great Deals out of 1,076 listings starting at $14,999
2015 Toyota Sienna For Sale
49 Great Deals out of 2,390 listings starting at $12,900
2014 Toyota Sienna For Sale
19 Great Deals out of 806 listings starting at $9,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.