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International 1552Sc Fuel Injection Harnesss

International 1552Sc Fuel injection harness

Starting at $81.95, AutoBuffy stocks 2 fuel injection harnesses from Standard Ignition to fit the International 1552Sc. The fuel injection harness routes power and signal to every fuel injector on the engine; when insulation cracks, connectors corrode, or wires break, injectors stop firing correctly, causing misfires, rough idle, and failed emissions tests.

Signs your International 1552Sc needs a new fuel injection harness

  • Check Engine light with stored misfire codes (P030X) or injector circuit fault codes (P020X) pointing to one or more cylinders
  • Rough or lumpy idle that worsens when the engine is cold or after rain, indicating moisture entering damaged connector boots
  • Intermittent hesitation or stumble under acceleration as a frayed wire loses contact under vibration or heat
  • One or more cylinders consistently misfiring despite verified-good injectors, coils, and spark plugs
  • Hard start or extended cranking because corroded injector connectors prevent proper injector pulse during startup
  • Fuel smell in the engine bay caused by an injector connector arcing and preventing full injector pintle closure

Which fuel injection harness should you buy for your International 1552Sc?

Fuel injection harnesses vary mainly by construction quality, connector material, and whether they cover the full injector bank or are sold as individual pigtail connectors. For a clean, long-lasting repair on the International 1552Sc, matching the OE connector style and wire gauge is critical — an undersized wire or mismatched connector body can cause the same fault codes you started with. Decide first whether you need the complete sub-harness or just a replacement pigtail for a single damaged connector.

OE-replacement complete harness
Best for
High-mileage vehicles with widespread insulation cracking or multiple bad connectors
What you get
Full drop-in harness matching factory routing, correct wire gauge, and pre-installed OE-style connector bodies for every injector
Individual injector pigtail connector
Best for
Single shorted or melted connector while the rest of the harness is intact
What you get
One pre-wired connector end to splice onto the existing harness; lowest cost and minimal disassembly required
Aftermarket performance harness
Best for
Modified engines with upgraded injectors requiring a different connector style (e.g., EV1 to EV6 conversion)
What you get
Higher-temp silicone insulation, heavier gauge wire, and universal connector kits suited to higher injector duty cycles
Remanufactured / refurbished harness
Best for
Budget repair on a vehicle with otherwise solid wiring where only connectors and insulation have degraded
What you get
Cleaned, re-pinned, and re-insulated original-style harness at a lower price point than a new unit; inspect warranty terms carefully

Fuel injection harness brands we stock for your International 1552Sc

Standard Ignition
2 options · from $81.95

Replacing a fuel injection harness on a International 1552Sc

Moderate⏱ 1–3 hoursRatchet and socket setFlathead and Phillips screwdriversWire stripper and crimping tool or soldering iron with heat-shrink tubingMultimeter for circuit verificationTrim removal picks for releasing connector locking tabs

Begin by relieving fuel system pressure and disconnecting the negative battery cable, then photograph the existing harness routing and label each connector before removal to ensure correct reinstallation. Route the new harness along the same path, keeping it clear of hot exhaust components and moving parts, and secure it with the original clips or new zip ties. Reconnect the battery, clear any stored fault codes with a scan tool, and run the engine through several warm-up cycles to confirm no codes return.

Frequently asked questions

How much does it cost to replace fuel injection harnesses on a International 1552Sc?
Parts start at $81.95 for the International 1552Sc at AutoBuffy. A complete harness costs more than a single pigtail but eliminates the need to return for additional connectors. Add one to three hours of shop labor if you are not doing the work yourself, which can push total cost higher depending on engine access.
Can I drive my International 1552Sc with a bad fuel injection harness?
You should not drive long distances with a faulty fuel injection harness on your International 1552Sc. Misfiring cylinders push raw fuel into the catalytic converter, causing overheating and expensive converter damage within a short time. An arcing connector can also generate enough heat to melt surrounding wiring and create a fire risk.
Will replacing the fuel injection harness fix misfire codes on my International 1552Sc?
It will fix misfire codes caused by injector circuit faults on your International 1552Sc, but not misfires from bad spark plugs, coils, or a faulty injector itself. Before replacing the harness, verify the fault codes specifically reference injector control circuits or injector power supply rather than ignition-side components.
How long does a fuel injection harness last on a International 1552Sc?
On the International 1552Sc, a fuel injection harness typically lasts many years under normal conditions, but heat cycling near the exhaust, oil contamination, and rodent damage can shorten its life significantly. Harnesses on vehicles parked outdoors in extreme climates or those with oil leaks tend to degrade faster than average.
Is replacing a fuel injection harness a DIY job on a International 1552Sc?
Replacing a single pigtail connector on the International 1552Sc is a straightforward DIY task requiring basic hand tools and a soldering iron or splice connectors. A full sub-harness replacement is moderately involved, requiring careful connector labeling before removal, proper routing to avoid heat sources, and cleared fault codes after installation to confirm the repair.
How do I know if the harness is bad versus the injector itself on my International 1552Sc?
On the International 1552Sc, back-probe the injector connector with a multimeter while a helper cranks the engine; you should see battery voltage on the power wire and a switching pulse on the signal wire. If voltage and pulse are present but the cylinder still misfires, the injector is at fault. Missing voltage or no pulse points to the harness or ECU.

Shop fuel injection harness by year for the International 1552Sc

199819971996

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