Search found 110 matches

by Freebird
Thu Nov 08, 2018 1:27 pm
Forum: Having Problems ?
Topic: Jag X300 stumbling when pulling away
Replies: 7
Views: 1303

Re: Jag X300 stumbling when pulling away

Hi All, I thought I would let you know that I cured my problem in case it's of use to anyone else. I fitted a thoroughly cleaned second hand throttle body complete with TPS and IAC valve and it made no difference, I then fitted a second hand MAF and that too made no difference. The previous owner ha...
by Freebird
Mon Aug 27, 2018 10:40 am
Forum: Having Problems ?
Topic: Jag X300 stumbling when pulling away
Replies: 7
Views: 1303

Re: Jag X300 stumbling when pulling away

Hi Simon It's a Stefenelli system, you may recall (unlikely though) we had a long post about it a couple of years or so ago when you correctly diagnosed duff lambda sensors? I have cleaned the crud out of the IAC now and it made no difference. It also struggles to start from cold sometimes (not ever...
by Freebird
Mon Aug 20, 2018 10:54 am
Forum: Having Problems ?
Topic: Jag X300 stumbling when pulling away
Replies: 7
Views: 1303

Re: Jag X300 stumbling when pulling away

Thanks Gilbert

I need a deep 5.5mm socket to get the idle control valve off, so an waiting for one to arrive. I will let you know how I get on.

Glen
by Freebird
Fri Aug 17, 2018 10:40 am
Forum: Having Problems ?
Topic: Jag X300 stumbling when pulling away
Replies: 7
Views: 1303

Jag X300 stumbling when pulling away

Hi All A few moths ago my Jag (Auto) would "stumble" when pulling away on gas and on petrol. By that I mean it would idle fine but as I applied the throttle it would die and often stall. If I hit the throttle hard it would hesitate and then take off, but this is often not a safe approach! I thought ...
by Freebird
Tue May 08, 2018 11:34 am
Forum: Having Problems ?
Topic: Fuel gauge LEDs reading full all the time
Replies: 5
Views: 1334

Re: Fuel gauge LEDs reading full all the time

Well, I investigated yesterday in the searing heat of our UK summer. I traced the white and black wires from the sender unit to the front of the car and found a bodged repair that someone had done inside the rear wheel arch using a "chocker block" I removed this and fitted 3.9mm motorcycle type bull...
by Freebird
Thu May 03, 2018 8:16 am
Forum: Having Problems ?
Topic: Fuel gauge LEDs reading full all the time
Replies: 5
Views: 1334

Re: Fuel gauge LEDs reading full all the time

Thanks for all the help guys, I will investigate further.
by Freebird
Wed May 02, 2018 8:28 am
Forum: Having Problems ?
Topic: Fuel gauge LEDs reading full all the time
Replies: 5
Views: 1334

Fuel gauge LEDs reading full all the time

Hi All I have a 1996 Jaguar XJ6 X300 fitted with a Stefanelli LPG system and recently all 4 of the green LEDs on the dash have been lit irrespective of how much fuel there is in the tank. Occasionally the right hand LED goes out, but in normal service it's the left hand one that goes out first as th...
by Freebird
Tue Sep 20, 2016 1:11 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Hi Guys

They are definitely 5-0V where 5V = lean. it registers 4.7V with the engine off and ignition on - lots of oxygen around then.

Glen.
by Freebird
Mon Sep 19, 2016 1:11 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Well, I checked that both lambdas were flicking while driving along on LPG and they do indeed. The voltages are changing constantly between virtually zero and 4 volts, rarely if ever getting to 4.7 which is fully weak. To my surprise they go very close to zero (fully rich) on the overrun - does that...
by Freebird
Wed Sep 14, 2016 1:21 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Gotcha I will repeat the multimeter on the dash trick with both lambdas looking for a good swing in voltages. On the subject of switching early, it usually takes 1/2 mile or so in the morning, but less in the evening as the ambient has been high recently. It now runs OK on gas once switched though w...
by Freebird
Tue Sep 13, 2016 4:05 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

As mentioned in one of my previous posts, I believe the Stefaneli system may be supposed to light up green LED's progressively from cold until the reducer reaches fuel changeover temp (at which point the system will switch to LPG and green LED's reflect tank level as usual). In which case the state...
by Freebird
Thu Sep 08, 2016 8:59 am
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Well, it's early days but I filled up after 178 miles and the consumption was just over 20 mpg which is something like a 25% improvement. I am happy with that, it now costs about the same to run as my E46 BMW 3 litre diesel so now I don't have to put up with that awful smell or that awful messy fuel...
by Freebird
Sun Sep 04, 2016 4:55 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Yep, bonkers...
by Freebird
Sat Sep 03, 2016 1:05 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

I am going to have to get inventive with a crows foot or similar. I made a range of tools for removing various probes, e.g. ring spanners cut down and welded to half inch socket extensions, one with a cut out like a pipe spanner so wires will slot through the cutout, one without cutout for tougher ...
by Freebird
Sat Sep 03, 2016 11:15 am
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Hi all I must apologise for making an error in my post yesterday and leading everyone up the wrong path. I mixed the yellow and white wire readings up. This is what I have actually got ignition on, engine off. The references in brackets come from here: http://www.lambdasensor.com/main/mcolours1.htm ...
by Freebird
Fri Sep 02, 2016 6:19 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Me too Bri. Might run the meter past the old and new probes too, see if there is much difference between old and new probes in terms of readings between all of the pinouts (2 pins at a time of course, a few combinations there...). If that doesn't reveal anything it might not be best idea to just pl...
by Freebird
Fri Sep 02, 2016 5:05 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Mmm, well I have double checked and I am getting:

Black = 4.7v
Yellow = 12v engine off, cycles between 7 and 14v at idle
Red = 12v
White = 0v

I shall see what the X300 forum have to say too.

Glen.
by Freebird
Fri Sep 02, 2016 12:52 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

they then have a signal reference (Yellow wire) which is fed with a 5V reference signal The plot thickens then. I'm sure I was getting battery voltage to both the red heater wire and the yellow ref (in) wire. I now need to double check. If this is the case, why might it be? I have definitely been s...
by Freebird
Thu Sep 01, 2016 9:57 am
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

One more point on measuring lambda voltage - best to use earth reference that is same as petrol ECU earth reference, i.e. to use earth reference that ECU provides to the lambda probe. Simon Hi Simon I'm not sure where to look for that mate. New probes arrived yesterday, so I will fit them Tomorrow ...
by Freebird
Wed Aug 31, 2016 1:28 pm
Forum: Having Problems ?
Topic: High fuel consumption?
Replies: 95
Views: 12348

Re: High fuel consumption?

Maybe, but they are on their way now so I shall replace both. I drove the car with 123 sensor output on the dashboard again and struggled to get it to read as low as 2V second time round no matter how hard I floored the throttle, so I don't think it's responding like it should. Thanks for everyone's...