Lambda Sensor Replacement
Discussion
In attempt to cure an annoying(ly) intermittent stalling problem – I will be replacing the lambdas on my Griff - with some that will hopefully arrive in the post today.
Is this a simple matter of disconnecting them, removing them (not, as yet, sure how to do that)(socket diameter anyone?) and replacing them with the others?
Do I need to do anything else? How about an ecu reboot (just for good measure)?
Any advice, tips, detailed step-by-step diagrams appreciated.
Is this a simple matter of disconnecting them, removing them (not, as yet, sure how to do that)(socket diameter anyone?) and replacing them with the others?
Do I need to do anything else? How about an ecu reboot (just for good measure)?
Any advice, tips, detailed step-by-step diagrams appreciated.
Is it definitely the lambda sensors at fault - any TVR specialist can plug a rover code reader into the ecu loom, and if there's a fault, eg LH lambda, it'll tell you. Unless you're sure its the sensors, the cheap option would be to get the ecu read - there's a list of fault codes in SHpub's 'bible'.
Thanks Andy.
Unfortunately I can't be sure that it's the sensors - but the a dealer has looked at the car and suggested it's the next thing to try (have already been through stepper motor, base-idle etc - and there are no faults showing on the ecu).
Having spoken to the dealer who sold me the car, he has suggested that he post me some lamdbas, I stick them on and we see if the problem goes away
If not, it's a trip back to Birmingham, for the car to be sorted...
Unfortunately I can't be sure that it's the sensors - but the a dealer has looked at the car and suggested it's the next thing to try (have already been through stepper motor, base-idle etc - and there are no faults showing on the ecu).
Having spoken to the dealer who sold me the car, he has suggested that he post me some lamdbas, I stick them on and we see if the problem goes away
If not, it's a trip back to Birmingham, for the car to be sorted...
I think the fault codes are 44 & 45, one for each bank of cylinders.
My Griff was showing up one of these codes a few months back. Car was running rough as it hit 3k rpm and there was a smell of petrol from engine bay.
Turned out to be a split fuel line which was pi55ing petrol on to the starter motor!
Replaced fuel line and all ok again. I assume the fault code was an out of range reading as one/both bank(s) being seriously under-fuelled.
Also explained why on a motorway run I got down to around 10 mpg when I usually see 20-25. Half the fuel was ending up on the road
I don't think replacing sensors is a big job - but if you intend doing it at home you'll need to borrow, steal or make a special tool to undo them. Once removed the leads plug in to the chassis at the front.
Dave
My Griff was showing up one of these codes a few months back. Car was running rough as it hit 3k rpm and there was a smell of petrol from engine bay.
Turned out to be a split fuel line which was pi55ing petrol on to the starter motor!
Replaced fuel line and all ok again. I assume the fault code was an out of range reading as one/both bank(s) being seriously under-fuelled.
Also explained why on a motorway run I got down to around 10 mpg when I usually see 20-25. Half the fuel was ending up on the road
I don't think replacing sensors is a big job - but if you intend doing it at home you'll need to borrow, steal or make a special tool to undo them. Once removed the leads plug in to the chassis at the front.
Dave
Hmmmm - a "special tool" 
I have heard rumours of such a thing from another source. So it looks like my choices are ...
1. Attempt to fashion a "special tool" (from, presumably, an empty coke can, a wire coat-hanger and an old pair of tights)(an old pair of my girlfriend's tights)
OR
2. Take it to someone who knows what they are doing and is already in posession of a special tool
Thanks for the info - I think I'll let the professionals sort it out (since it's only a five minute job)(with a special tool)
I have heard rumours of such a thing from another source. So it looks like my choices are ...
1. Attempt to fashion a "special tool" (from, presumably, an empty coke can, a wire coat-hanger and an old pair of tights)(an old pair of my girlfriend's tights)
OR
2. Take it to someone who knows what they are doing and is already in posession of a special tool
Thanks for the info - I think I'll let the professionals sort it out (since it's only a five minute job)(with a special tool)
Get a suitable sized deep socket from local car boot or cheapo tool stockists, then slit the socket down one side with a 4 1/2 inch handle grinder with a cutting disc attached ( to enable the wire to pass through).
Plug in your ratchet to said socket and heave ho.
Have some WD40 ready for the threads.
Work it in and out a few times with liberal amounts of WD40 (so as not to damage the threads)
Sorry i would normally tell you the size required for the socket but its pi55ing it down and i just got in from being in it all day!!!
Plug in your ratchet to said socket and heave ho.
Have some WD40 ready for the threads.
Work it in and out a few times with liberal amounts of WD40 (so as not to damage the threads)
Sorry i would normally tell you the size required for the socket but its pi55ing it down and i just got in from being in it all day!!!
Impressive 
- thanks for that.
Now all I have to do is figure figure out how to make a 4 1/2 inch handle grinder from an empty coke can, a wire coat hanger ...
Seriously - thanks for the advice
but I think I'll save you a trip outside in the rain and take it to a car-fixing-emporium...
- thanks for that. Now all I have to do is figure figure out how to make a 4 1/2 inch handle grinder from an empty coke can, a wire coat hanger ...
Seriously - thanks for the advice
but I think I'll save you a trip outside in the rain and take it to a car-fixing-emporium...Thanks for the offer, starmist.
Ordinarily, I would love an excuse for a 100 mile blast across the country - on the quest for the 'special tool'
Unfortunately I'm not going to be around for a month-or-so now. So the current (cunning) plan is to leave the sick Griff
with the dealer while I'm away and pick up the healthy Griff 
on my return!
Ordinarily, I would love an excuse for a 100 mile blast across the country - on the quest for the 'special tool'
Unfortunately I'm not going to be around for a month-or-so now. So the current (cunning) plan is to leave the sick Griff
with the dealer while I'm away and pick up the healthy Griff on my return! starmist said:
And probably be [yournamehere]quid lighter!
It took me a looooong while to figure out what you meant there - but it is late (sort of?)
Actually I bought the car from a dealer about six weeks ago - and he (James at TVR MADS) is supplying the Lambdas - and suggested that I leave the car with him, while I'm away, if the Lambdas don't sort the problem (an entirely decent suggestion). In fact James has been entirely decent to deal with, throughout.
So no big bill on my return
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