360-930-9843
I had an outstanding experience with GT40Marine and wanted to share my thoughts. From the moment I reached out, their team was professional, knowledgeable, and genuinely committed to delivering excellent service.
Emily Bennett
"We (N3 Boatworks) ordered an ECM from Gt40Marine last summer. No issues. Customer service on point".
Adam Barnhart
I recently had the pleasure of working with GT40Marine, and I couldn't be more impressed with the quality of their service. From start to finish, they demonstrated an exceptional level of professionalism and expertise that is rare to find in the marine repair industry.
James Parker
"What Others are Saying"
Frequently Asked Questions
How long will shipping take?
Standard orders that are placed will ship out next business day. If you want overnight shipping please select in the drop down menu on the check out page.
Where do i ship my core ecu back?
Return label will be placed in the package.
Gt40Marine
5210 Rainier Dr e
Bonney Lake, Wa 98391
Engine starts and runs great when cold, after warming up the engine stumbles and dies
This is usually caused by a bad ecm. As the engine warms up, the ecu gets heat soak and will start to fail.
A list of possible symptoms
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Low fuel pressure
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Heat Soak
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Bogging down after reaching running temp
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No spark
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Fuel pump not priming
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Boat has been jump-started on reverse polarity
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Engine Computer water or burn damage
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Injection pulse or fuel pump loss of power
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Erratic engine idle
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Bad running condition
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Bad fuel economy
Low fuel pressure
Heat soak
Bogging down after reaching running temp
Boat has been jump-started on reverse polarity Ecu has water or burn damage
Erratic engine idle
Bad running condition
Bad fuel economy
