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The mkiv Supra Owners Club

uk pump need moding?? fuel related


TT Paul
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had no joy in tech section but sorted that prob, new one has occured... 93 tt full bpu jspec

 

fitted uk spec fuel pump idle is fine, BUT when i apply throttle get to about 3000rpm

 

car starts to jolt abit and dies... restarts on the button only had this since uk spec pump fitted today any ideas or anyone had this problem thanks... tried without AEM FIC as well

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Guest gazza

sounds to me like the fuel relay needs changing to uk spec. its probly running high pressure and switching to low at 3000rpm it should be doing the opposite, so when hitting 3000rpm it kicks in high for the extra power and below its low pressure to save fuel. there is another solution, you could do what many others do and bypass the relay and run the pump at full speed to test it. all you need is a paper clip and to know what the correct terminal's in the fuel relay plug that you need to connect. currently running my mr2 turbo like this as the fuel relay packed up.

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Read this thread here---> http://www.mkivsupra.net/vbb/showthread.php?178781-Even-more-fuel-pump-ecu-confusion

 

This is from the previous owner of my car that I bought in Jan 2010

 

His profile to posted threads is here, http://www.mkivsupra.net/vbb/search.php?searchid=550648&pp=&page=5

 

look from page 5 back through to 1 (pick out the relevant threads) to see the issues he had. Seem simular to yours.

 

I will PM Mikey as I think I should know how he resooved this :D

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Read this thread here---> http://www.mkivsupra.net/vbb/showthread.php?178781-Even-more-fuel-pump-ecu-confusion

 

This is from the previous owner of my car that I bought in Jan 2010

 

His profile to posted threads is here, http://www.mkivsupra.net/vbb/search.php?searchid=550648&pp=&page=5

 

look from page 5 back through to 1 (pick out the relevant threads) to see the issues he had. Seem simular to yours.

 

I will PM Mikey as I think I should know how he resooved this :D

 

cheers many thanks

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