How Much Was It For You To Register Your Jeep

How To Know If You Need a Jeep PCM Replacement

The Powertrain Command Module (PCM) is the figurer that controls almost of your Jeep's essential systems. The PCM controls the engine timing, the fuel to air ratio, the manual, and the anti-lock brakes, along with dozens of other smaller functions.

When your PCM fails, it can cause you to lose fuel efficiency and possibly fail your state'due south emission inspection. It can also lead to backfiring, difficulty starting the engine, crude shifting, and rapid article of clothing and tear on vital engine components.

Common Symptoms of Jeep PCM Failure

Considering your PCM controls many of your car's systems, there are a big number of possible symptoms. The near obvious is if your code scanner is reading any code that begins with "P06". These codes all identify specific PCM problems.

Other common symptoms include:

– The cheque engine low-cal is on
– Your engine stutters or stalls
– Gas mileage has inexplicably gotten worse
– Your Jeep is shifting erratically or seemingly at random
– Your Jeep has difficulty starting

The main reason people spend so much on PCM repair is that many people, fifty-fifty professional mechanics, often misdiagnose PCM bug as engine or manual issues, and try plush repairs to those systems. Y'all could buy several PCMs for the toll of rebuilding 1 transmission.

Worse yet, rough shifting and poor engine timing can cause damage over time, which ways that the longer the problem with your PCM goes undiagnosed, the more you're likely to end up spending on repairs downwardly the road.

If you lot're experiencing any of these problems, it's a good idea to take your codes read before spending a lot of money on mechanical repairs. At the very least, you lot'll eliminate a possible cheap repair pick. At best, you'll exist able to repair or replace your PCM earlier anything else gets damaged.

Diagnosing the Trouble

Even if your PCM is sending a mistake code, the problem may non be with the PCM itself. Information technology may be with the wiring harness. Perform a visual inspection of the wiring, and replace any corroded contacts or frayed wires. If everything looks good from a visual standpoint, follow upwards with a multimeter to make sure you didn't miss anything.

Some other mutual trouble is if your bombardment ground has shorted out to the vehicle's frame. Inspect your battery contacts themselves, too. Low voltage is a cause of many PCM faults.

Beyond that, it's a skillful thought to perform other diagnostic procedures based on the exact error code you're reading. We've written separately about several of these codes, in our PCM repair blog .

1 common problem that affects Jeep PCMs – particularly PCMs for the Jeep Thou Cherokee – is poor soldering on the 5-volt ability connection. If all other tests take failed, you can try re-flowing the solder. Nosotros'll go over this process in the next department.

Repairing Your PCM

Repairing a damaged PCM is difficult for anyone who isn't experienced with soldering on a printed circuit board. At Solo Auto, our dedicated technicians can repair your PCM and mail it back to yous within 24 to 48 hours. Once you mail service in your PCM, our technicians will assess the symptoms of your module, calibrate the codes, and conduct an internal and external inspection. Once repairs are made, we'll test the unit of measurement to ensure its working correctly, update the programming codes, and retest the PCM before mailing it dorsum to yous.

If yous are experienced in these kinds of repairs and are willing to take the risk and make the attempt yourself, hither's what you'll need to practise.

Starting time, y'all'll need a 60/40 rosin core solder. It must exist rosin core, not acid cadre, since acid core solder tin can damage the circuit board itself. You'll likewise need DeoxIT, or a like not-corrosive contact cleaner.

Remove the two small screws in your PCM cover, and carefully pry the closing tabs open. Remove the small cover, and prepare information technology to the side. And so remove the larger cover, and turn it over. On one side, you'll meet an electric connector that'south soldered on. Clean off any potting compound, and reflow the solder, applying as little new solder as necessary to exercise the job.

Make sure the solder flows from each pad to the connector for that pad, without touching whatsoever other connectors and causing a short. Be very conscientious while y'all're doing this. Any impairment to the copper circuits will permanently destroy your PCM.

Next, make clean all the contacts with contact cleaner, and reassemble your PCM. Sometimes this method doesn't work, only it's effective in the majority of cases. If your PCM still doesn't work, you'll need to supersede it.

Replacing Your PCM

When you lot're searching for a replacement PCM, it's important to go on in listen that PCMs are programmed for a specific make and model of vehicle. If you drive a 2007 Jeep Liberty with a iii.7-liter V6, y'all can't utilize just any PCM. You tin't use merely whatsoever Jeep PCM replacement. Yous need the PCM for that exact car. Solo PCMs has more than 100 Jeep PCMs for sale, and then yous can find exactly the version you lot need.

Nearly PCMs are plug-and-play, and then installation is just a matter of disconnecting the power supply, removing the old PCM, and installing the new one. If you lot'd like a more detailed explanation, our PCM replacement guide explains the process.

How Tin can We Help?

If you have whatever questions about your PCM repair or replacement, contact u.s. on our website, or call united states of america at 888-848-0144. SoloPCMs specializes in automotive computers, and our technicians are always willing to share their expertise.