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Would a bad 02 sensor cause acceleration and cause the exhaust to be red hot?

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Sounds more like a plug catalytic converter

Posted on Dec 28, 2013


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Posted on Jan 02, 2017

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SOURCE: exhaust getting red hot

Timing to far advances. It's getting ignition before the valves are closing.

Posted on Jan 11, 2009

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SOURCE: engine is running badly, struggling to start, 2 cylinder exhaust tube is red hot, the engine has no power, everything is good between the sensors. someone something like that happened, the timing chai

Dear Sir:
Proceed with the Readjust the ignition timing according with the specification manufacturer. 2) Readjust the GAP from spark plug to the s. manufacturer. 3) See for bad connections, corrosion, dirty, dust,vibration, loose wires, break or burn, test fuse, defective solenoid, relais, or bad battery and alternator. See the diagrams and proceed with common sense, and fix it. God bless you
5_25_2012_10_27_27_am.jpg5_25_2012_10_27_42_am.jpg5_25_2012_10_28_01_am.gif5_25_2012_10_28_17_am.gif5_25_2012_10_28_40_am.gif5_25_2012_10_29_10_am.jpg5_25_2012_10_29_59_am.gifYou can connect remote start switch from with a + battery terminal and the other to the terminal solenoid, must be RUN, isolate the problem and fix it, according with your logic

Posted on May 25, 2012

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SOURCE: Can a vacuum leak cause a check engine code on oxygen sensor? Bad mix air-fuel = bad exhaust emissions?

No it can,t. If you are geting a code that leads to your oxygen sensor, It is shot end has to be replaced. They only last so long before they have to be replaced.

Posted on Oct 20, 2012

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SOURCE: engine is running badly, struggling to start, 2 cylinder exhaust tube is red hot

I have a '96 Previa LE/SC all trac. Had rough idle at stop light, especially with A/C on. Over the past year the #2 spark plug cracked twice. Suspected overheating (lean condition) caused by weak injector. Replaced the injector yesterday and the rough idle has ceased. No more shaking steering wheel at the red light.

Posted on Jun 29, 2013

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2 Answers

1997 jeep grand cherokee laredo- codes 171 and 174

Find another mechanic. Lean codes. Could be vacuum leaks(lines or plenum) or exhaust leaks near the O2 sensors.

Dec 26, 2016 | 1997 Jeep Grand Cherokee

1 Answer

1996 cherekee 4lt cold starting idles good warms up idles rough. exhaust fums stink. fueling up spark plugs .speedo289000klm'can any one help

is the problem only on a cold engine, hot or both?
is the hot engine reaching and holding 180F or more as it must?>
its running rich
and that is misfire.
lots of causes for rich. the tests are easy in shop with tools.
  1. a full tuneup.
  2. fuel pressure to high we, use a gauge. (FPR bad?)
  3. leaking injectors.
  4. ECT failure, scan it and must read 180f, hot, if at 180f hot.?
  5. this takes 5 min work on any scan tool (real)
  6. map hose clogged. or leaking. the Map sensor must not be blocked in any way to the plenum vacuum. or it will lie and it will run real bad.
  7. on a hot engine, the 02 sensors can fail, or is good and the exhaust cracks in the header do that. on mine it did 3 times.
cracks in the exh header, there must not he any leaks in that header (or bad gaskets)
or the 02 lies. , goes to 0volts and then engine runs rich as a piggy. (my scan tool shows this is seconds, 02 flat-lined at 0v.
all cars, with 02 do that. with that issue.
02 means oxygen sensor, the front one, not the rear one.

Dec 11, 2016 | 1996 Jeep Cherokee

2 Answers

98 jeep wrangler tj 4.0 code 320 crank sensor exhaust glowing red acceleration not going over 2000 showing signal on scan tool that crank sensor is working.

Good morning
Questions (sorry)
so it runs perfect and only red glow? no, it has lost engine power.
GIVE It A FULL 60K MILE TUNE UP YET, BUY The book the decades?
the 98 is obd2, technology USA< and allscantools work this year
and will all report 1 miss in 10 on all sensor like that, CMP or CKP

that red glow means tons of fuel and air are landing outide engine
this is caused by gross misfire. ever misfire dumps load of fuel and 20% oxygen there, like the afterburner on a jet, but this case is wasted so, MISFIRE is the prime symptom.
if running a turbo ,it be normal. (red glow only)

so what cause misfire,
there is a huge list if reason , can i assume you have no DTC errors thrown?
are the spark wire routed, in the correct firing order.
is the engine timed to spec>?
got 150 or more PSI compression on all 6 cylinders?
The PCM;/ECU can also go to limphome mode, and do that. easy.
bad sensor inputs, do that, and DTCs are stored.
is that a real scanner or just cheap code reader, if real there are lots of checks. can i list them? all EFI fuses good.
  1. ECT shows ambient temp , cold started, the goes to 180F and holds hot? if not the thermostat is no good, bingo. stuck in cold start mode for ever.
  2. I keyon and see the TPS work, not started, called throttle angle.
  3. i start and TPS ANGLES show, low then high as i gun the throttle
  4. The engine worms up and gets to closed loop status. CL.
  5. if not I fix that first, after all fixing idle hard fails is 10x easier than flying down the road at 2000 rpm.
  6. Ok got closed loop at idle (i bet not) then while parked can i get CL status, at 2000 rpm, in neutral or park.?
  7. id bed not. id bet 6 fails all fail able, or?
  8. so why is it not. well that can be easy or hard, what can you do ,well lots really , bad 02 sensor (front) or exhaust leaks near it?
  9. its and old 4L so do the compression test as we do on all old motors, its after all, old. can run a dead engine with EFI.
  10. IS fuel pressure too high (gauged)
  11. Is the Fpreg working, (gauged)
  12. is the MAP WORKING (voltmeter) ask for scale i have it.
  13. leaking injectors. (for 3 reasons/cause) "gauged leak down tests"
  14. more sure but above may land on the

some 4L liter in CAL have 2 front 02 sensors, due to split exhuast header man. so that takes a quick look there.

Dec 27, 2014 | Jeep Cars & Trucks

2 Answers

2001 Caravan has red hot catalytic converter and #4 misfire error code.

Engine is way too rich. You will burn that car up. Unburned fuel is getting into the CAT and igniting. Check the injectors.

May 02, 2014 | 2001 Dodge Caravan

1 Answer

Cuts out while driving

which engine,? in the 02 GC? WJ model.
138s are like so common its like bread and butter, 1million posts world wide, here goes.
its the OXy sensor.
bank 1, sensor 2 , is reading too high.
my guess, (cant see) is the sensor is bad, or the wires are shorted.
or wires cut. 02 sensor can have bad service and the wires put back wrong and then hit the 2000F hot exhaust, pipe there, and get destroyed. so looking is fire.
B1S1 is (no engine stated)

this 138 can set if the inside of the 02 heater melts and then shorts to the CELL pin (OXY output) causing illegal output there.
or the wires are shorted there.

inline 6 , this is the rear sensor
v6 this is the rear sensor on bank 1, which is #1 cylinder side.

Mar 06, 2014 | 2002 Jeep Grand Cherokee

3 Answers

When maintaining speed of about 50mph,2004 pacifica hesitates and will cut off while in park sometimes.check engine light is not on



It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there.

There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: -------

Jerks and Hesitates During Acceleration?


Loss of acceleration?


Headlights flickering and car hesitates to start?


How exactly the Vehicles Accelerator Cable works?


How exactly Vehicles Accelerator Pump Diaphragm Works?


2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?


2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?


Wheel hop under hard acceleration?


2009 Chevy impala accelerator pedal sensor?


Nissan Pathfinder stalls and bucks on Acceleration?


Acceleration lag problem?


These details will help.


Nov 28, 2012 | Chrysler Pacifica Cars & Trucks

1 Answer

What would cause my car to run too rich?

several things can cause a rich may have a bad 02 sensor,bad maf sensor,bad tps sensor,high fuel pressure,bad thermostate can make the computer think the car is colder than it is,plugged air filter or some restriction in the air intake system,so you see its important to have the computer hooked to a scan tool to check for codes that may not set the light(highly unlikely)and check the data that the computer showing this is the only way that you will find the problem.the reason the catalytic is turning red is because its loaded with raw fuel and cannot clear it out.this can lead to a fire if not looked at immediately you may have to replace the convertor due to damage from being loaded with fuel.

Mar 28, 2012 | 2001 Hyundai Elantra

1 Answer

2002 ford escape red hot exhaust spudders and rpms drops to almost stall

Carol Ann,
Your catalytic converter is plugged up [restricted] This is causing the exhaust to get red hot and causing the reduction in power. You need to replace this part [$$$} The catalytic converter failed because you have been driving the car for months with the fuel mixture excessively rich.
You need to find and fix the cause of the rich mixture or your replacement catalytic converter will also fail in a few more months.

Dec 21, 2011 | 2002 Ford Escape

1 Answer

Indicator light came on and the car is not humming like it used to. I noticed that the oxygen sensor glows bright red and the passenger side floor boards are hot after driving for less than 10 minutes. ...

you have some type of exhaust/catalytic converter issue.

Take it to a mechanic and have them pull the code immediately. that will tell you the issue.

if you have a failure in the 02 sensor then I am willing ot bet that the car is running super rich and the exhaust is still rich enough that it is continuing to combust down through the exhaust which runs under the passenger seat.

Oct 01, 2010 | 2002 Honda S2000

1 Answer

My car is loosing power when i drive and starts to bog...i have already changed my plugs and wires. but when i let the car idle in the drive way my catalytic converter is getting cherry red and catching on...

this is caused buy a bad 02 sensor in exhaust system. or a bad convertor. but the check engine light will be on. also you may have a plugged up convertor. if the sensor fails it will send info to pcm that it is not reading it and therefore dump to much rich exhaust into convertor.

Sep 10, 2010 | 1999 Ford Taurus

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