Computers and Sensors – Mid Ohio Mobile Mechanic

TIPM rebuilders — How to deal with a bad TIPM

Mid Ohio Mobile Mechanic — Wed, 31 Jan 2024 23:25:49 +0000

Fix a bad TIPM by getting yours rebuilt from one of these TIPM rebuilders The Totally Integrated Power Module (TIPM) is a critical component in many Chrysler, Dodge, and Jeep vehicles. The TIPM is a fuse box, relay box and electronic module all in one. It houses all of the important fuses and power relays in the vehicle. Unfortunately, TIPM failure is a common problem. When it fails, it can cause all kinds of electrical problems. You can’t fix it yourself. You have two choices; buy a new one from … Read More

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Learn how a speed density air-fuel system works

Mid Ohio Mobile Mechanic — Tue, 30 Jan 2024 22:28:46 +0000

A speed density air-fuel system works differently than a mass airflow system. Learn how it works and what can go wrong A speed-density air-fuel system is a type of electronic fuel injection system that calculates the amount of fuel to be delivered to the engine based on the engine’s speed and manifold absolute pressure (MAP). The system uses a MAP sensor to measure the air pressure in the intake manifold and the engine’s speed to calculate the engine’s airflow. The computer then uses this information to determine how much fuel … Read More

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Check engine light on? — Is it serious?

Mid Ohio Mobile Mechanic — Sat, 27 Jan 2024 03:36:18 +0000

A check engine light on means there’s a problem. As long as it isn’t flashing and it’s driving ok it’s probably not an expensive fix What does a check engine light mean? Vehicle computers are very sophisticated and can routinely test each system in the vehicle, fuel, spark, exhaust, emissions, etc. The emissions laws state what minimum standards the vehicle must meet, so when the vehicle computer tests emissions and the results come up outside of spec, it will set a check engine light and store a trouble code. A … Read More

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Why you can’t clean an oxygen sensor

Mid Ohio Mobile Mechanic — Fri, 19 Jan 2024 02:17:10 +0000

You can’t really clean an oxygen sensor to make it work If you do a search for how to clean an oxygen sensor you’ll see all kinds of techniques. That may lead to you believe that cleaning yours is a good idea. Unfortunately, there’s no way to clean an oxygen sensor and anyone that tells you otherwise is someone who doesn’t have a clue as to how they work. How an oxygen sensor is made An oxygen sensor is made with a porous zirconia “thimble as the base material. It … Read More

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Test a Knock Sensor: Step-by-Step Guide

Mid Ohio Mobile Mechanic — Tue, 02 Jan 2024 17:40:30 +0000

Test a knock sensor yourself If you have a check engine light and a knock sensor code, the cause can be a bad knock sensor, or an issue with the knock sensor wiring or electrical connector. You can test the knock sensor yourself. Start by checking the condition of the wiring harness and electrical connector. Feel the wire for signs of an open, or rodent damage. Remove the connector from the sensor and check for corrosion. If the wiring looks good, move on to the bias voltage test Test the … Read More

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Oxygen sensor — how to replace

Mid Ohio Mobile Mechanic — Sat, 04 Nov 2023 15:22:21 +0000

Replace an Oxygen Sensor Most oxygen sensors screw into the exhaust pipe. When it’s time to replace an oxygen sensor, you’ll need an oxygen sensor socket. Some oxygen sensors screw into the exhaust pipe. But air/fuel ratio sensors usually bolt onto the exhaust manifold. Many DIYers refer to them as oxygen sensors. Here are the instructions for removing screw-in style oxygen sensors. Buy or rent an oxygen sensor socket set Oxygen sensor sockets are special tools that allow you to easily replace an oxygen sensor, even if you’re working in … Read More

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Symptoms of a bad MAP sensor

Mid Ohio Mobile Mechanic — Thu, 02 Nov 2023 21:23:06 +0000

What are the symptoms of a bad MAP sensor The 6 most common symptoms of a bad MAP sensor A bad MAP sensor can cause any or all of the following: Hard start or no start Engine starts and then stalls Car hesitates or drags while under load or idle. Car hesitates or jerks during acceleration. Ping or detonation Excessively rich or lean idling along with poor gas mileage Check engine light or failed emissions test Common MAP sensor trouble codes P0068: MAP/MAF – Throttle Position Correlation P0069: Manifold Absolute … Read More

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Why does the check engine light come on?

Mid Ohio Mobile Mechanic — Wed, 12 Jul 2023 17:43:16 +0000

Why the check engine light comes on All modern vehicles have at least one computer to run the engine and transmission. Those computers take in data from sensors like the intake air temperature sensor, oxygen sensor(s), engine coolant temperature sensor, manifold absolute pressure sensor, and the mass airflow sensor. Something is wrong with the data or the circuit and that’s why the check engine light comes on Based on all the data coming in, the computer determines the following: 1. Is the circuit to the sensor in proper condition (are … Read More

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