5KTQ dies, cranks but doesn't start, blows fuse #13.

quattro5k · 06-11-2005, 11:43 PM

Hello all,

My 5KTQ died on me last night and refused to start again. Spark is fine but as soon as I start cranking the engine the fuse #13 blows - I've tried to replace the original 15A with 25A and 30A but they get blown as well.

My guess is that the fuel pump needs to be replaced but is there anything else I should test before buying a new pump? Cold start valve maybe?

Thank you,
Quatto5k

boxerfan · 06-12-2005, 06:38 AM

DON'T keep putting higher current fuses in there. You might burn up your wires.

quattro5k · 06-12-2005, 07:25 AM

boxerfan · 06-12-2005, 09:59 AM

quattro5k · 06-12-2005, 01:05 PM

boxerfan · 06-13-2005, 05:02 AM

Fuse 13 supplies power to the Fuel pump, fuel sender, cold start injector and the after run pump.

1) disconnect your after un pump - attemp to start - does fuse blow? Leave disconnected if fuse still blows.
2) disconnect your cold start injector - attempt to start - does fuse blow? Leave disconnected if fuse still blows.
3) disconnect your fuel sender - attempt to start - does fuse blow? Leave disconnected if fuse still blows.
4) disconnect your fuel pump.... yadda yadda yadda...

When the fuse stops blowing you have found your culprit. If it is still blowing then you will have to meter out the disconnected lines and look for a short either between them or to ground. Something is trying to draw a huge current.

Does it blow as soon as the switch is in the run position? Does it blow in the run position with the jumper fuse in the fuel pump relay? Does it blow during the starting attempt? Does it blow after a starting attempt in hot ambient temps?

Good luck.

XcellR8edAudi · 06-13-2005, 05:38 PM

06-12-2005, 06:38 AM	#2
boxerfan AudiWorld Super User Garage is empty, add now Join Date: Dec 2003 Posts: 5,485	If the fuse is blowing that should be fixed first and foremost. DON'T keep putting higher current fuses in there. You might burn up your wires. __________________ Cheers; Boxerfan Toronto, Ontario CANADA 1983 Ur Quattro. RS2 Replica turbo, Custom 8.5:1 CR Pistons, sleeved block, MC2 cam, micropolished crank, shot-peened rods, 20VT HG, ARP Head Studs, Supertorque T-belt set up, BPV, Dual diaphragmed WG, chipped ECU, D-ported intake runners, 7mm stem Ti valves, aluminum oil pan, rear sway bar, 5-point harness. "Essica" Current project: 1983 Ur-Quattro Club Rally car. Still needs engine and transmission... and a number of other things. "Adam Bomb" ATTRITION LIST: 1987 Coupe GT. 98,000 original kms, tornado red. "Rosie". Sold. 1988 Olympic Edition 5000 CD Turbo Quattro Avant. "Red Devil" - Sold 1993 Audi V8 Quattro 5-speed conversion, IA chip set, short shift kit, full dual exhaust with 911 Turbo cats. "The Blue Meanie" - Sold 1990 Audi V8Q Pearl - Demolished. 1990 Audi V8Q Pearl - Sold 1989 Audi 200Q Black- "FrankenAudi" Alive again! - Deceased - Taken off the road by ERASE (Eliminate Racing Activity on Streets Everywhere) - Sent directly to crusher, do not pass GO, do not collect $200. 1989 Audi 200Q Avant Black - "FrankenVagen" Deceased May 7th, 2006 - Cause of death: Front end removed in collision - Boy in Ford Expedition SUV ran red light doing 70kph. 1989 Audi 200Q Sedan Tornado Red - "Cherry Bomb" Deceased January 19th, 2004 - Cause of death: Rear end collision - Girl on phone in Buick doing 80kph.

06-12-2005, 07:25 AM	#3
quattro5k New Member Garage is empty, add now Join Date: Jun 2004 Posts: 5	Any suggestions on where to start? Fuel pump relay? Are there any "usual suspects"?

06-12-2005, 09:59 AM	#4
boxerfan AudiWorld Super User Garage is empty, add now Join Date: Dec 2003 Posts: 5,485	What year? __________________ Cheers; Boxerfan Toronto, Ontario CANADA 1983 Ur Quattro. RS2 Replica turbo, Custom 8.5:1 CR Pistons, sleeved block, MC2 cam, micropolished crank, shot-peened rods, 20VT HG, ARP Head Studs, Supertorque T-belt set up, BPV, Dual diaphragmed WG, chipped ECU, D-ported intake runners, 7mm stem Ti valves, aluminum oil pan, rear sway bar, 5-point harness. "Essica" Current project: 1983 Ur-Quattro Club Rally car. Still needs engine and transmission... and a number of other things. "Adam Bomb" ATTRITION LIST: 1987 Coupe GT. 98,000 original kms, tornado red. "Rosie". Sold. 1988 Olympic Edition 5000 CD Turbo Quattro Avant. "Red Devil" - Sold 1993 Audi V8 Quattro 5-speed conversion, IA chip set, short shift kit, full dual exhaust with 911 Turbo cats. "The Blue Meanie" - Sold 1990 Audi V8Q Pearl - Demolished. 1990 Audi V8Q Pearl - Sold 1989 Audi 200Q Black- "FrankenAudi" Alive again! - Deceased - Taken off the road by ERASE (Eliminate Racing Activity on Streets Everywhere) - Sent directly to crusher, do not pass GO, do not collect $200. 1989 Audi 200Q Avant Black - "FrankenVagen" Deceased May 7th, 2006 - Cause of death: Front end removed in collision - Boy in Ford Expedition SUV ran red light doing 70kph. 1989 Audi 200Q Sedan Tornado Red - "Cherry Bomb" Deceased January 19th, 2004 - Cause of death: Rear end collision - Girl on phone in Buick doing 80kph.

06-12-2005, 01:05 PM	#5
quattro5k New Member Garage is empty, add now Join Date: Jun 2004 Posts: 5	1986

06-13-2005, 05:02 AM	#6
boxerfan AudiWorld Super User Garage is empty, add now Join Date: Dec 2003 Posts: 5,485	Looks like... Fuse 13 supplies power to the Fuel pump, fuel sender, cold start injector and the after run pump. 1) disconnect your after un pump - attemp to start - does fuse blow? Leave disconnected if fuse still blows. 2) disconnect your cold start injector - attempt to start - does fuse blow? Leave disconnected if fuse still blows. 3) disconnect your fuel sender - attempt to start - does fuse blow? Leave disconnected if fuse still blows. 4) disconnect your fuel pump.... yadda yadda yadda... When the fuse stops blowing you have found your culprit. If it is still blowing then you will have to meter out the disconnected lines and look for a short either between them or to ground. Something is trying to draw a huge current. Does it blow as soon as the switch is in the run position? Does it blow in the run position with the jumper fuse in the fuel pump relay? Does it blow during the starting attempt? Does it blow after a starting attempt in hot ambient temps? Good luck. __________________ Cheers; Boxerfan Toronto, Ontario CANADA 1983 Ur Quattro. RS2 Replica turbo, Custom 8.5:1 CR Pistons, sleeved block, MC2 cam, micropolished crank, shot-peened rods, 20VT HG, ARP Head Studs, Supertorque T-belt set up, BPV, Dual diaphragmed WG, chipped ECU, D-ported intake runners, 7mm stem Ti valves, aluminum oil pan, rear sway bar, 5-point harness. "Essica" Current project: 1983 Ur-Quattro Club Rally car. Still needs engine and transmission... and a number of other things. "Adam Bomb" ATTRITION LIST: 1987 Coupe GT. 98,000 original kms, tornado red. "Rosie". Sold. 1988 Olympic Edition 5000 CD Turbo Quattro Avant. "Red Devil" - Sold 1993 Audi V8 Quattro 5-speed conversion, IA chip set, short shift kit, full dual exhaust with 911 Turbo cats. "The Blue Meanie" - Sold 1990 Audi V8Q Pearl - Demolished. 1990 Audi V8Q Pearl - Sold 1989 Audi 200Q Black- "FrankenAudi" Alive again! - Deceased - Taken off the road by ERASE (Eliminate Racing Activity on Streets Everywhere) - Sent directly to crusher, do not pass GO, do not collect $200. 1989 Audi 200Q Avant Black - "FrankenVagen" Deceased May 7th, 2006 - Cause of death: Front end removed in collision - Boy in Ford Expedition SUV ran red light doing 70kph. 1989 Audi 200Q Sedan Tornado Red - "Cherry Bomb" Deceased January 19th, 2004 - Cause of death: Rear end collision - Girl on phone in Buick doing 80kph.

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06-13-2005, 05:38 PM	#7
XcellR8edAudi AudiWorld Super User Garage is empty, add now Join Date: Dec 2002 Posts: 3,255	what is 13? i'm not by my car right now... __________________ Current Rides: 2005 Subaru Impreza WRX STi 1987 Audi 5000 CS Turbo Quattro Past Rides: 1988 Audi 90 FWD/Auto 1988 Audi 5000CS TQ Avant 1989 Audi 200 TQ 1987 Audi 5000CS TQ Avant 1988 Audi 5000CS TQ 1995 Audi 90 Quattro 1990 Eagle Talon TSi 1992 Subaru Legacy L Wagon 1995 Ford Escort Wagon 1989 Volvo 240 DL 2005 Subaru Impreza 2.5RS

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