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        General >> Problems >> FUEL INJECTION PROBLEM
        
(Message started by: stevo1 on May 9^th, 2004, 12:29pm)

Title: FUEL INJECTION PROBLEM
Post by stevo1 on May 9^th, 2004, 12:29pm

I have a Ford Ultima 2.9 12 valve V6 1995 and the right hand bank of injectors keep flooding pots 4, 5 and 6 with fuel and i mean flooding to the point of filling them up !!!!
With the fuel rail off and when i switch the ignition off injectors 4 5 and 6 just dump loads of fuel out. Then they seem to get hot and drain the battery dead...

This has really got people scratching their heads and have been no help to me...Can anyone please please help as i am desperate to get my car back on the road..

Thanks Steve...

Title: Re: FUEL INJECTION PROBLEM
Post by TonyS on May 9^th, 2004, 5:34pm

The firing signal from the ECU is a grounding one so any short to ground on the loom wires controlling this bank will cause them to fire continuously.

Given all the bank are firing I'd suspect a loom fault so test for shorts to ground at the multiplug to the left of the engine looking forward. With them getting hot it's unlikely to be an injector fault, more likely to be a control circuit problem driving them full on.

Title: Re: FUEL INJECTION PROBLEM
Post by stevo1 on May 9^th, 2004, 6:00pm

Thanks for the pointer .... i was beginning to think it was an ECU problem....Do you know where i can obtain a wiring daigram from as there dosnt seem to be a Haynes manual for this model

Title: Re: FUEL INJECTION PROBLEM
Post by TonyS on May 9^th, 2004, 6:03pm

http://www.carsoft.ru/avtorepair/sierra_el.html