efi fault buzzer.....every 5 minutes!
Discussion
Mine does it now and again. Normally when I have been out in heavy rain. It then disappears after a few minutes!
No idea what causes it. Been doing it for 3 years of my ownership and now 26K miles without any other problems whatsover.
Sorry can't help but maybe worth a quick check with your local TVR garage to check that all is well.
No idea what causes it. Been doing it for 3 years of my ownership and now 26K miles without any other problems whatsover.
Sorry can't help but maybe worth a quick check with your local TVR garage to check that all is well.
b2tus said:
Mine does it now and again. Normally when I have been out in heavy rain. It then disappears after a few minutes!
No idea what causes it. Been doing it for 3 years of my ownership and now 26K miles without any other problems whatsover.
Sorry can't help but maybe worth a quick check with your local TVR garage to check that all is well.
It yours a pre 2004 ish Tusc?No idea what causes it. Been doing it for 3 years of my ownership and now 26K miles without any other problems whatsover.
Sorry can't help but maybe worth a quick check with your local TVR garage to check that all is well.
There is a fault when rain/water falls down inside the bonnet. There is a mod which can be done in the bodywork near the windscreen.
Not damaging, just annoying.
You may want to get hold of a copy of the diagnostic software, a lead and a laptop before you do anything. (I have all of these, software was free and the lead came from Clever Trevor)
Mine had a constant efi buzz and display. I thought it was a Lambda but when I connected it up there was nothing wrong with any of the readings I was getting. I reset the fault and nothing since! I have checked since and the only fault is connected with low battery voltage. I had a problem with my starter motor which was dragging down my battery. I was told that if you get a repeated fault (low voltage) the efi warning may come on. I can only assum that my problem was the low battery fault I had.
Where are you located? If you're anywhere near me (Hertfordshire) I would be happy to connect up to your ecu so you can check the fault logs and check the readings from the 2 Lambda sensors.
I hope this helps.
Mine had a constant efi buzz and display. I thought it was a Lambda but when I connected it up there was nothing wrong with any of the readings I was getting. I reset the fault and nothing since! I have checked since and the only fault is connected with low battery voltage. I had a problem with my starter motor which was dragging down my battery. I was told that if you get a repeated fault (low voltage) the efi warning may come on. I can only assum that my problem was the low battery fault I had.
Where are you located? If you're anywhere near me (Hertfordshire) I would be happy to connect up to your ecu so you can check the fault logs and check the readings from the 2 Lambda sensors.
I hope this helps.
orangeone said:
Cheers Guys, Its a MK1 2001 Model. So the lambda sensor does sound the likely problem as the local garage last year said it was on its way out. £70 fitted Justin ?? inc parts ?? and who did it for you? By the way im in the midlands
Cheers
Was at SFR in Stockport.Cheers
Shouldnt be that much more at a dealer, its quite a quick job. Mine went at about 25k miles and 27k miles.
As has been said, the random fault may be anything. The voltage one is a killer too. It happened to me when the alternator was on its way out, you can check on the voltage on the screen though.
The other common thing is the earthing being corroded which can cause the battery to be drained or not charged properly.
Either way, it may be a while you wait thing.
I had this problem last month. Started in the rain, spoke to Hexham Horseless Carragies (Richard) who told me these can play up in the rain as already mentioned. How ever after calling in they put the laptop on as suggested and noted that the second sensor was on the way out. Cost me £125 for the part, then fitting on top, seems some other quotes mentioned are a lot less so would suggest shopping around. Now the sensor has been done it's fine.
Edited by campbrc on Sunday 13th January 13:53
IF you have a Mk1 tuscan you need either the TVR software (free) and cable (£42) or your need to take car to TVR indy or dealer to reset. Mk2 can be reset on the dash, I think you hold the fog button and the function button in at the same time ...
I went with the DIY option as my nearest TVR dealer was a 80 mile round trip. After making 2 trips just for a 2 minutes job!
I went with the DIY option as my nearest TVR dealer was a 80 mile round trip. After making 2 trips just for a 2 minutes job!
The buzz EFI that 90% of you hear & see is the water temp sensor , change unit and clean plug stick back on and cover with a silicon gel / Petroleum jelly or grease if you don't have first 2 . Its moisture and water driping off front screen and then on to air box and down on to temp sensor .
Some may find the efi comes on after washing car or car if the car is standing in a damp garage too long causing the damp to corrode plug.
Dont just jump straight to Lambda you may be changing something for nothing.
Some may find the efi comes on after washing car or car if the car is standing in a damp garage too long causing the damp to corrode plug.
Dont just jump straight to Lambda you may be changing something for nothing.
Thanks for your help and emails Yahoo, in the end after checking the water temp sensor and removing and checking the lambda sensors, it all came down to a simple reset due to the battery being disconnected for a matter of time. My advice, go for the simple option first, its not always going to cost you a packed cos its a TVR!!!
Just to resurrect this old thread as my 2003 Mk 1 tuscan now has just acquired this "EFI fault" and buzzer problem. Can any please describe or tell me what the mod is referred to in b2tus post on 10th January 2008 please ? I.E. bodywork mod near the windscreen. It seems likely that this is my problem- rainwater going inside bonnet. I have never had the problem before but it occurred last weekend in heavy rain.
Many thanks for any help.
Many thanks for any help.
desperately sad said:
Any one with any information on this mod please to help me ?
Thanks.
Don't think there's anything too fancy in the way of a "mod".Thanks.
The ECU coolant sensor is the plug below airbox between Cylinders 5 & 6....The gist of the previous posts is that water/dampness can get onto the sensor contacts - coating with Vaseline prevents this happening.
I would get the diagnostic cable from - - any of the usual suppliers and interrogate the ECU before doing anything. The specific faults will be displayed on the diagnostic page, allowing you to make more informed interventions be they just cleaning temp. sensor contacts and resetting or changing one or both lambda probes.
Nick
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