How to Fix 7.3 Powerstroke ICP Sensor Failure Symptoms

Symptoms of a Bad ICP Sensor

The following are some of the symptoms you may experience if your ICP sensor is bad. If you notice any of these describeable symptoms, it is time to get your ICP sensor checked:
– Engine speed increases above normal
– Spark plugs have to be replaced more often
– Fuel economy decreases or stays the same while driving at high speeds with a load on the engine. This can also cause hesitation and rough acceleration.
– Check engine warning light comes on signifying an issue with the catalytic converter, it may not pass smog checks.
– Turbo boost decreases significantly or stops all together.
– “Check engine” light comes on.
– You notice a smell of gasoline in the cab of your truck, or when driving for a longer distance.
– If you notice any of the above symptoms, it is time to get your ICP sensor checked.
The ICPSensor is located on the exhaust side of the Catalytic Converter (CC) and between the Turbocharger and CC.
– Remove the ENGINE COVER (instructions inside).
– With your MAP switch in the ACC position, Universal Joint and tranny in neutral, start the engine.

7.3 powerstroke icp sensor failure symptoms
7.3 powerstroke icp sensor failure symptoms

The Stages of an Engine with a Bad ICP Sensor

Stage 2: In stage 2, the motor will start blowing out black smoke which is caused by unburnt fuel and raw gas mixing together. The engine will likely die in this stage and may not restart. If it does start up it will run very rough as the cylinders are going beyond their maximum capacity to compress air/fuel mixture.
Stage 3: In stage 3, the motor will start blowing out gray smoke which is caused by unburnt fuel and raw gas mixing together. The engine will likely die in this stage and may not restart. If it does start up it will run very rough as the cylinders are going beyond their maximum capacity to compress air/fuel mixture.
Stage 4: In stage 4, the motor will start blowing out white smoke which is caused by unburnt fuel and raw gas mixing together. The engine will likely die in this stage and may not restart. If it does start up it will run very rough as the cylinders are going beyond their maximum capacity to compress air/fuel mixture.

7.3 powerstroke icp sensor failure symptoms
7.3 powerstroke icp sensor failure symptoms

What Causes a BAD ICP Sensor on the 7.3 Powerstroke?

A bad ICP sensor can cause a variety of symptoms on the 7.3 powerstroke. The symptoms vary depending on which components are affected and by how much. Most of the time a bad ICP sensor affects fuel trim, injector pulse width and air/fuel ratio which causes all four cylinders to have a lean condition. Thus in this single malfunction we can have a symptom list that spans over three different articles: fuel trim, injectors and the air/fuel ratio. In this article we are going to talk about what causes a bad ICP sensor which will help you understand how it affects the 7.3 powerstroke.
The information contained in this article is derived from multiple sources including Ford service information and private correspondence with Johnathan (Jstange) of Powerstroke.org who has informed me that he was a tech at a dealership and has worked on many 7.3 powerstrokes during his career as a technician.
First we need to understand how the ICP sensor works and why it is needed.

7.3 powerstroke icp sensor failure symptoms
7.3 powerstroke icp sensor failure symptoms

Conclusion: The Best Way to Fix Any Issues with your 7.3 Powerstroke’s ICPS Sensors

The best way to fix your 7.3 powerstroke’s icp sensors is to have it scanned and repaired by a professional at an auto repair facility. The scanning will reveal if there are any leaks or faults with the sensors. If the testing indicates no faults, the next step will be to replace the bad ICP sensors. The best way to do this is to have all of the bad sensors replaced at the same time. By doing this, you’ll have a sensor that is better designed and more reliable than the ones your vehicle came with. The best way to find a mechanic/auto repair shop that can perform these services for you is through an auto search engine like autotrader.com or currentflyers.net and give them your VIN number for the respective repair: www.autotrader.com/vin-decoder and www.currentflyers.net/vin.php
Using an auto search engine like autotrader.com or currentflyers.net is a good way to find a mechanic/auto repair shop that can perform these services for you. The only downside of doing this is that you have to pay for the scanning, repair and replacement. This will cost you $200-$350 at most auto shops, much more if it requires new sensors from the dealer.

7.3 powerstroke icp sensor failure symptoms
7.3 powerstroke icp sensor failure symptoms