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International 3700 Fuel Pressure Sensor Connectors

International 3700 Fuel pressure sensor connectors

Starting at $56.95, AutoBuffy stocks 1 fuel pressure sensor connectors from Standard Ignition. This connector links the fuel pressure sensor to the ECU, allowing the engine to regulate fuel delivery in real time. A damaged or corroded connector disrupts that signal, triggering rough running, poor fuel economy, and hard starts that won't resolve until the connection is restored.

Signs your International 3700 needs a new fuel pressure sensor connector

  • Check Engine Light with a stored fuel pressure sensor or fuel system rationality code (commonly P0190–P0194 range)
  • Engine hesitates or stumbles under acceleration because the ECU is receiving an erratic or missing fuel pressure signal
  • Hard starts or extended cranking as the ECU cannot confirm adequate rail pressure before opening injectors
  • Intermittent stalling at idle or low speed, especially when the wiring harness flexes from heat cycling or vibration
  • Fuel trims running rich or lean without an obvious fuel injector or pump fault — the ECU is compensating for a bad sensor reading
  • Symptom disappears temporarily when the connector is wiggled or reseated, a classic sign of a broken terminal or cracked connector body

Which fuel pressure sensor connector should you buy for your International 3700?

Fuel pressure sensor connectors vary primarily by terminal count, housing design, and whether you buy a pre-terminated pigtail or a bare connector shell. The right choice depends on how much of the existing wiring is damaged and how permanent a repair you need. A direct-fit pigtail with pre-soldered leads is almost always preferable to a universal repair kit for a clean, long-lasting fix.

OEM-style direct-fit pigtail
Best for
Damaged or melted connector with good wire behind it
What you get
Pre-terminated leads matched to your International 3700's connector body and terminal count — splice in and done
Weatherproof repair connector kit
Best for
Moderate corrosion at terminals with intact housing
What you get
Replacement terminals, seals, and housing pieces to rebuild the existing connector without cutting the harness
Universal metri-pack / Deutsch pigtail
Best for
Custom or modified fuel systems where OEM fitment isn't available
What you get
Generic connector body and leads requiring pin-count and housing verification before purchase
Full wiring harness section
Best for
Extensive heat or chafe damage extending several inches up the harness
What you get
Longer lead replacement covering damaged wire beyond just the connector, eliminates multiple splice points

Fuel pressure sensor connectors brands we stock for your International 3700

Standard Ignition
1 option · from $56.95

Replacing a fuel pressure sensor connector on a International 3700

Easy⏱ 30–60 minutesWire stripper and crimper or soldering iron with rosin-core solderHeat shrink tubing and heat gunTerminal pick or connector release toolDielectric greaseMultimeter for pre- and post-repair voltage verification

Relieve fuel system pressure before disconnecting any fuel rail components, then unplug the damaged connector and cut the leads leaving enough wire to work with. Splice the new pigtail using solder-and-heat-shrink joints for the most corrosion-resistant result, apply dielectric grease to the mating terminals, and snap the new connector onto the sensor. Clear any stored codes, verify reference voltage at the sensor, and confirm no codes return after a short drive.

Frequently asked questions

How much does it cost to replace fuel pressure sensor connectors on a International 3700?
The connector itself starts at $56.95 at AutoBuffy. DIY total cost is typically just the part plus basic supplies like solder, heat shrink, and dielectric grease. A shop will add 30–60 minutes of labor. Fixing the connector rather than the sensor can save significant diagnostic time if codes return after a sensor swap.
Can a bad fuel pressure sensor connector cause a no-start on a International 3700?
Yes. If the ECU receives no signal from the fuel pressure sensor, many engine management systems default to a limp or no-start condition because they cannot verify rail pressure. Reseating or replacing the connector often restores a start immediately, which is a useful diagnostic test before condemning the sensor or fuel pump.
Will a damaged fuel pressure sensor connector throw a Check Engine Light on a International 3700?
Almost always. An open circuit or out-of-range voltage at the fuel pressure sensor input triggers a diagnostic trouble code, most commonly in the P0190–P0194 range. The light may appear intermittently at first if the connector is only cracked or partially corroded rather than fully broken.
How do I know if the connector is the problem and not the sensor itself on a International 3700?
Unplug the connector and inspect terminals for green corrosion, pushed-back pins, melted plastic, or cracks in the housing. Backprobe the harness side for reference voltage (typically 5 V) and a clean ground. If voltage is present but the code persists after a new sensor, the connector or its wiring is the fault.
Is it safe to drive a International 3700 with a faulty fuel pressure sensor connector?
Short trips are unlikely to cause immediate damage, but it is not advisable. The ECU may run open-loop or use a failsafe fueling table that is too rich or too lean, reducing fuel economy and potentially fouling catalysts over time. A stalling event in traffic also creates a safety risk.
Should I replace the fuel pressure sensor at the same time as the connector on a International 3700?
It is worth considering. If the connector has been corroding, moisture likely reached the sensor terminals as well. Replacing both at once eliminates a return trip if the sensor has degraded internally. It also lets you confirm with a single repair whether the symptom was the connector, the sensor, or both.

Shop fuel pressure sensor connectors by year for the International 3700

1994

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Fuel pressure sensor connectors for other International models

International 4700LPXInternational CXTInternational 3800International 4100 SBAInternational 3000ICInternational 8100