Small Animals Can Cause Big Problems with Cars
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By Clifford Auto Parts
If you've owned a Ford long enough, you've probably heard someone say, "It turned out to be the PCM." While the Powertrain Control Module (PCM) isn't the most common failure point, it can create symptoms that look like almost anything else.
Because the PCM controls critical engine and transmission functions, a fault can easily be mistaken for bad sensors, ignition issues, or even a failing transmission. That often leads to replacing parts that weren't actually the problem.
Common Symptoms of a Failing Ford PCM
Here are some of the symptoms I've seen discussed most often:
Check Engine Light that returns after repairs Engine cranks but won't start Random stalling while driving Rough idle or engine misfires Poor fuel economy Delayed or harsh transmission shifts Cooling fan running constantly Multiple communication (U-code) errors No communication with the scan tool The tricky part is that these symptoms can also be caused by wiring problems, low battery voltage, damaged grounds, or faulty sensors.
Don't Assume the PCM Is Bad
Before replacing the PCM, it's worth checking a few basics:
Battery voltage and charging system All PCM power and ground circuits Fuses and relays Wiring harness damage Corroded or loose connectors CAN Bus communication Water intrusion around the PCM I've seen situations where a damaged ground cable or corroded connector caused symptoms identical to a failed PCM.
Ford Models That Come Up Frequently
Certain Ford platforms seem to generate more PCM-related discussions than others, including:
Ford F-150 Ford Explorer Ford Escape Ford Expedition Ford Mustang Ford Ranger Ford Super Duty (F-250/F-350) Ford Fusion That doesn't necessarily mean the PCM is defective—it simply means these vehicles are commonly diagnosed when electrical or drivability issues appear.
When Replacement Becomes Necessary
If you've confirmed the PCM itself has failed, replacing it isn't always as simple as plugging in another module. Depending on the model year and vehicle, the replacement PCM may require:
VIN programming Security (PATS) programming Calibration updates Idle or transmission relearn procedures Installing an incorrect or unprogrammed module can prevent the vehicle from starting or lead to additional fault codes.
Final Thoughts
Modern Ford trucks and SUVs rely heavily on electronics, so accurate diagnosis is more important than ever. Taking the time to verify power, grounds, wiring, and communication before replacing expensive components can save both time and money.
Discussion
For those who own or work on Ford vehicles:
What Ford model gave you the most trouble? Have you ever had a PCM fail, or did the issue turn out to be something else? What symptoms led you to the final diagnosis? I'd be interested to hear everyone's experiences and see if there are any common patterns across different Ford models.
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By elizabeth
Searching for a Lexus transmission near me often means finding a dependable replacement that delivers luxury-level performance and smooth shifting. Lexus vehicles share many reliable drivetrain components with Toyota models, making their transmissions highly respected for durability and comfort. Whether you own an RX, ES, IS, GX, or LS model, choosing the right transmission replacement helps maintain premium driving quality. Before purchasing, verify the VIN match, mileage history, and transmission condition to ensure proper compatibility. Many drivers choose tested used transmissions because they provide a more affordable alternative to dealership replacements. A reliable Lexus transmission improves acceleration, fuel efficiency, and long-term performance while preserving the smooth driving experience Lexus owners expect from their vehicles.
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By Counterman
A blown head gasket is one of the most serious engine issues, often leading to overheating, performance problems and costly repairs. Understanding how to evaluate the condition and choose an effective solution is key to preventing further damage and restoring engine operation.
The head gasket seals the combustion chamber and separates coolant and oil passages between the block and cylinder head. It must contain combustion pressure while maintaining proper fluid flow. When that seal fails, combustion gases, coolant and oil can cross paths, leading to overheating, pressure buildup and loss of engine efficiency.
Head gasket failure often starts with overheating or long-term engine stress. Customers may report coolant loss with no visible leak, along with white exhaust smoke, rough running, or coolant being forced out of the system. Some vehicles will still run for a period of time, while others overheat quickly. That difference in behavior is critical. It tells you how severe the failure is and helps guide the right repair approach.
Confirm the condition based on symptoms like coolant loss and overheating with no external leak. Then ask a key question: how long can the engine run before overheating or pushing out coolant? If it can run 15–20 minutes,
link hidden, please login to view is a strong option for sealing minor to moderate failures. If the issue is more severe, stepping up to a heavier-duty solution may be necessary. Bar’s Leaks Head Seal Blown Head Gasket Repair is designed to create a durable seal, helping restore system integrity when matched correctly to the condition. Head gasket issues come down to sealing failure and severity. Identify the condition, then match it with the right solution.
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By elizabeth
The 2018 Chevrolet Traverse comes equipped with a 9-speed automatic transmission paired with its 3.6L V6 engine, offering wide gear spacing for both fuel efficiency and highway cruising comfort. Some owners have reported concerns with rough or hesitant shifting, particularly during low-speed acceleration and downshifts — often addressed through GM software updates and transmission fluid changes. Dexron HP is the recommended fluid for this unit. When replacing the transmission, ensure the replacement unit is properly programmed to the vehicle's control modules. Remanufactured 9-speed units provide a dependable, warrantied path to restoring smooth, confident performance in your Traverse. link hidden, please login to view -
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By Counterman
Some things are just easier than others in this life. When it comes to parts, we all have those lookups that test our patience, leave us shaking our heads, or make us wonder why we even got out of bed this morning.
Beginning with the basic identification of the vehicle, we are often reliant on our customer to know what they are ordering parts for. Model year may differ from the actual manufacture date appearing on the door tag, or the door may not even be original to the vehicle, skewing the results of a VIN-based parts search. Many manufacturers offer “carryover” models concurrent with a newly-released platform, creating confusion between models and leaving us to figure out the easiest or most obvious ways to identify each design. Yes, I’m looking at YOU, Silverado, Ram and Wrangler!
Other times, it’s the similarities in model names that can lead to confusion. Side by side, no one would ever confuse a Corvette with a Chevette, but click the wrong button in a catalog, and you may be halfway through the lookup before you realize something doesn’t look quite right. Those of us who remember the overlapping Ford Bronco and Bronco II models of the 1980s and ‘90s, or even the Explorer, Explorer Sport and Sport-tracs of the early 2000s can relate to the renewed confusion caused by today’s Bronco and Bronco Sport models. If I never hear the phrase “I dunno, I think it just says Bronco,” it will still be too soon!
Once we’ve positively identified the actual vehicle, we must still navigate the minefield of misnamed components and vague descriptions common to a catalog system engineered to accommodate multiple manufacturers who can never seem to agree on naming conventions. Toe links, lateral links, tension struts, and trailing arms might all fall under the broad category of “control arm.” I still have flashbacks about trying to specify Audi/VW multi-link suspension components when they first became popular. What do you mean you want the “left-front-upper-rear” control arm, sir?
Occasionally, a customer-induced curveball can really throw off your rhythm, but don’t underestimate the power of your own foolishness, either. I absolutely KNOW my left from my right (its written on my mittens, after all…) but I’ve lost track of the number of times I’ve flubbed this basic request, and I do still get the odd customer who asks “you mean when I’m looking at the car, or sitting in it?” I also learned to specify “left and right” rather than “driver and passenger” after getting burned by a string of right-hand drive Jeeps owned by rural mail carriers.
No matter the vehicle and no matter the request, our greatest asset as parts specialists will always be our attention to detail. It begins with listening to our customer rather than just hearing them, and taking notes while we absorb the information they are presenting to us.
Our second greatest asset is our curiosity. We all like learning, knowing and understanding things, but when a situation does become confusing or unclear, it is always better to ask questions than to assume you’ll figure it out alone. We are here to solve problems; to find answers and we do that best when applying our unique skillset for the benefit of all. Engaging with the customer is a means of including them in the solution, one you are both equally invested in reaching.
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