Lawso Posted February 26, 2022 Share Posted February 26, 2022 Hi, I’ve just bought a 1998 A4 1.9tdi quattro, it’s been sat for 10 years and I don’t know when it last ran(suspect a few years ago) so I got it home and stuck a battery on it, it starts and runs for 2 or 3 seconds then dies. I suspect it’s the immobiliser as the light keeps flashing. I’m going to get the immobiliser deleted from the ecu but before this I wondered if there’s any way to get it running by bypassing anything. Having been sat so long I’d like to get it running and up to temp before spending any real cash on it. Any help appreciated. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted February 26, 2022 Share Posted February 26, 2022 I believe the clocks, key, ecu are all interlinked. Are they all working properly? Quote Link to comment Share on other sites More sharing options...
Lawso Posted February 26, 2022 Author Share Posted February 26, 2022 It only came with one key and I suspect with being sat so long without power it need re-programmed? Clocks seem to work except the pixelated screen in the centre, ecu has been removed as there was damp in the box, however I’m assuming it’s ok as it starts briefly. Quote Link to comment Share on other sites More sharing options...
Lawso Posted February 26, 2022 Author Share Posted February 26, 2022 I thought the immobiliser maybe just cut off the fuel supply’s I hard wired the fuel solenoid on the pump and the tank pump but it still starts for 2 seconds then dies so I assume it disables other things too. Quote Link to comment Share on other sites More sharing options...
audia4b5kev Posted February 27, 2022 Share Posted February 27, 2022 PUT LIVE FEED TO THE PUMP THATS WHAT I DO Quote Link to comment Share on other sites More sharing options...
Lawso Posted February 27, 2022 Author Share Posted February 27, 2022 The pump in the tank? Done that but no different. Quote Link to comment Share on other sites More sharing options...
audia4b5kev Posted February 27, 2022 Share Posted February 27, 2022 On 2/26/2022 at 5:33 PM, Lawso said: Hi, I’ve just bought a 1998 A4 1.9tdi quattro, it’s been sat for 10 years and I don’t know when it last ran(suspect a few years ago) so I got it home and stuck a battery on it, it starts and runs for 2 or 3 seconds then dies. I suspect it’s the immobiliser as the light keeps flashing. I’m going to get the immobiliser deleted from the ecu but before this I wondered if there’s any way to get it running by bypassing anything. Having been sat so long I’d like to get it running and up to temp before spending any real cash on it. Any help appreciated. no diesel pump under bonnet like hotwire job they are !Removed! if diesels low to standing Quote Link to comment Share on other sites More sharing options...
Lawso Posted February 28, 2022 Author Share Posted February 28, 2022 Do you mean the fuel shut off solenoid on the pump, I’ve tried hot wiring that, even took out the plunger but still cuts out after 2 sec. or is there another power supply to the pump. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted February 28, 2022 Share Posted February 28, 2022 On 2/26/2022 at 6:18 PM, Lawso said: I thought the immobiliser maybe just cut off the fuel supply’s I hard wired the fuel solenoid on the pump and the tank pump but it still starts for 2 seconds then dies so I assume it disables other things too. The pixelated screen is a common issue. Damp? If you've got damp in the ECU or ccm this could be your major issue. Quote Link to comment Share on other sites More sharing options...
Lawso Posted March 1, 2022 Author Share Posted March 1, 2022 Just sent the ecu away for a check and immobiliser delete. Will keep you posted. Quote Link to comment Share on other sites More sharing options...
Lawso Posted March 8, 2022 Author Share Posted March 8, 2022 So I had the immobiliser deleted from the ecu and the car now runs, few other jobs to sort but these will probably have to wait as I bought the 2.5tdi Quattro Avant listed for sale on this forum. The 1.9 tdi may be for sale soon.😁 Quote Link to comment Share on other sites More sharing options...
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