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Def pressure sensor code3574 - 2008 Dodge Ram 3500

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Why is my jeep hesitating, going up a hill or when flooring it to pass?

nice facts, all, but no engine size options stated.
after all it's an ENGINE question.
you dont know whats there, and doing DIY> really?

one fact missing, and is key
does WOT power CATCH up
that is you move right foot fast and it bogs, we get that but what happens after the bog> ? more bog or it catches up.
if it dont catch up;, on hills, maybe fuel pressure low.
at WOT there is no 02 sensors. nor TPS (enrich)
at WOT only you , then engine sucking air like mad the MAF at max voltage and if fuel pressure is low the car has endless bog.

wot, = wide open throttle, use a hill to test, flat is useless .
max fuel is at max HP (max torque + max RPM both same time)

i own an 08 wrangler, 3.8L stick.
i just sold my 02,. with 2.4L I4, it was a bogging engine day one out of factory its a gut less I4. (only tubo can fix it)
2.4 or 4.0 L.
ive own all of them 4 and 6cyl.

Jul 19, 2014 | 2003 Jeep Wrangler

1 Answer

2002 bmw has no heat def,or heater .start up error -40deg dash

The ambient temp sensor is out of range maybe came unplugged or is faulty or the computer that reads the sensor is faulty or has a bad connection most ambient sensors are located behind the front grill and are pretty easy to get to enclosed is a typical bmw ambient sensor you didnt say your model so this is just a general idea 1_4_2013_5_06_15_am.jpg

Jan 04, 2013 | BMW Cars & Trucks

1 Answer

Lambda oxy sensor def. Will Denso work

Yes, the Denso Mfr #: 234-4209 O2 sensor is a universal 4 wire pre cat sensor that will work in your vehicle. Bosch also makes an exact fit sensor, #15606 for the upstream & 15607 for downstream.

Jun 28, 2011 | 2004 Mitsubishi Outlander

1 Answer

My Catera won't start after it warms up. It turns over ,but won't fire. Could this be the crankshaft sensor?

Sounds like a good guess to me.If the engine has individual coil packs,that eliminates a single coil,and the crank sensor would tell it the engine is spinning over.Def sounds electrical how it quits after it heat up.

Feb 15, 2011 | 2000 Cadillac Catera

1 Answer

I have a 2011 volvo D13 engine it uses def like water about 100 miles to the gallon.

Is it possible to take out that DEF injector and put it in DEF tank so you have a closed loop? Then it can use that def as much as it wants. Right?

Jan 17, 2011 | Volvo 780 Cars & Trucks

1 Answer

Have a code po 430 catalyst efficiency below threshold (bank 2) is it an o2 sensor ,and if it is where is it located

You def have a catayst problem. Before changing the converter i would recommend changing both up and down stream oxygen sensor on bank 2. If they are old thats what the computer determines if the catalyst is good or not. Most of the time after changing the sensors and resetting the light the problem is solved.

Aug 26, 2009 | 1999 Chevrolet Silverado 1500

1 Answer


Without the code, it is virtually impossible to determine what the problem is, other than you just may have a loose fuel cap. A loose cap will def set the light off. ...Normally, sensors for the engine are usually covered under most extended service contracts, if it is a sensor issue.... Perhaps you could go & find an Autozone near you, they can hook up a scanner & give you the code(s); please get the codes back to me and I will def assist you with your issue!

Oct 15, 2008 | 2002 Toyota RAV4

2 Answers


P0400 Exhaust Gas Recirculation Flow Malfunction

Post more information on your vehicle, and the symptons which lead to the fault.

Strictly Saab
Melbourne, FL

Aug 30, 2008 | 2000 Saab 9-3 Viggen

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