Diesel Diagnostics

Back to Forum

Post a Response

Landrover Freelander TD4 2001 - Non start, codes P1260 & P1E25 #

Posted by Leslie Smith on September 11, 2011, 3:06 pm

Year of Manufacture *: 2001
Engine Size and Code *: 2000
( Optional ) Scanner Used: Solus
( Optional) Fault Codes: P1260 AND P1E25

Hi All

Need a little help. Been a few places and has an in tank fuel pump and ecu been checked. Also had a crank sensor fitted at the dealers, but old one put back on. Will start and cuts out as soon as revs reach 1200. like someone switching off. Code P1E25 comes back.Not scoped cam sensor yet but feel if it starts should keep going even if cam faulty.The under bonnet fuel pump is noisy. getting 2.5bar when tested. Could this be from new in tank pump. As there are two low pressure pumps, why do you need two? Disconnected the fuel pressure sensor to check for corrosion. OK. Getting an earth and 5 volts. With Solus I am getting 3.46bar delivered pressure. Connect sensor back and now no start and code P1260. At tick over Map+980. acc pedal pos 1 at tick over =7.9% with acc pedal pos 2= 0%. Both at 100% at WOT. Hope all the above makes sense.

Best regards

Les

Re: td4 freelander non start

Posted by Bryan Smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5330' width='330' height='300' border=0 style='border:none;'> on September 12, 2011, 4:40 pm, in reply to "td4 freelander non start"

Hi Les,
I recently had one with intermittent non start. When it wouldn't start the fuel pressure was lower than 1 bar and when it would it was over 2. Once started it ran fine. The front pump was very noisy so I scoped the current draw and found it all over the place. With this evidence I replaced that pump without even looking at the intank pump which turned out to be a mistake as that one wasn't working at all. The new pump was quiet and the current trace was now stable so I did feel that the pump was indeed on its way out and was justified in leaving it on the vehicle and charging for it. With regard to your problem I can tell you that this vehicle ran very well once started with just the front pump only half working IYSWIM. I can't recall exactly but I think the cranking pressure after replacing both pumps was about 3-4 bar.
Regards,
Bryan.
PS. I think fuel filters are also very common, even at low mileage, and I have changed these for fuel pressure problems in the past.

Re: td4 freelander non start

Posted by les smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1209' width='330' height='300' border=0 style='border:none;'> on September 12, 2011, 8:20 pm, in reply to "Re: td4 freelander non start"
Leslie Smith

Cheers for your info Bryan. It may be a few day's before I get back to this. I am going to try and find out more of its history. I do know that the P1E25 code comes up if the cam sensor is faulty and the same code for crank sensor. There is also the fuel pressure code fault. I think although the under bonnet pump may be weak, this is not the main fault. I do not mind fitting one once I have the engine up and running and the P1E25 is cleared.
Cheers
Les

Re: td4 freelander non start

Posted by martin simonsohn <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3223' width='330' height='300' border=0 style='border:none;'> on September 13, 2011, 11:01 am, in reply to "Re: td4 freelander non start"
Martin Simonsohn

hi i have seen 2 td4 with the same symtoms when i scoped the cam sensor the trace wasnt switching cleanly ie not switching all the way to ground
the first one i replaced the cam sensor engine started straight up and i retested cam sensor,now switching fully to ground and a nice clean signal.(the replacment sensor is slightly different)
the second one i found the same fault codes set and same scope readings so new sensor fitted to no avail when i scoped the front pump the trace was noisy and the current trace seemed to drop out in segments
the rear pump was also noisy but worse so i changed the rear pump and that did cure the fault but i did recomend that the front pump be changed.
hth martin

Re: td4 freelander non start

Posted by les smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1209' width='330' height='300' border=0 style='border:none;'> on September 18, 2011, 12:45 pm, in reply to "Re: td4 freelander non start"

went back to this today. The voltage at the fuel press switch when cranking is 1.9v At tick over is 1.3v. The low pressure switch when running is 3.8v. Scoped the cam sensor at tickover. The sensor is switching very quick compared to others I have tested.. This will not start when hot and there is no output from cam sensor. Once cool will start.So, I have a intermittent fault with the low pressure pump (although ok today when tested) and a fault with cam sensor.Both these problems will, if replaced not cure the main fault which is cutting out at 1500 revs.I am all for repairing what you find but the customer has spent over £400 already and I would like to get it running OK before replacing these parts.Next job is scoping crank but working outside in the rain put paid to that for the moment. Thanks for reading
regards
Les

Re: td4 freelander non start

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on September 18, 2011, 1:26 pm, in reply to "Re: td4 freelander non start"
Mark Carter

Hi Les,

>>> .Both these problems will, if replaced not cure the main fault which is cutting out at 1500 revs.<<<

How do you know that?

Look at live data with it running at idle and then increase the Rpm and log the data, find out what PID is causing the issue.

Then compare what is happening when it starts with what is happening when it does not.

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: td4 freelander non start

Posted by les smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1209' width='330' height='300' border=0 style='border:none;'> on September 18, 2011, 3:22 pm, in reply to "Re: td4 freelander non start"
Leslie Smith

Cheers Mark. Always starts when cold but cuts out dead at 1500. The reason non start when hot is cam sensor but when running I should be able to rev freely without cam sensor connected but I do take your point. Forgot to mention I was using solus last week with no problem but today would not comm. On eobd not enough data. I will take the launch with me next time as well.
regards
Les.

Re: td4 freelander non start

Posted by Shaun Dale <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2719' width='330' height='300' border=0 style='border:none;'> on September 19, 2011, 12:10 pm, in reply to "Re: td4 freelander non start"

An important piece of advice I learned from that great Guru Frank Massey "never leave a faulty item in place and try to estimate it's effect, always replace it before continuing". I'm paraphrasing but that's the gist of it.
I've always held this opinion but if Frank says it, it must be true

. The important thing is to pass the essence of that phrase to the customer, get his ok and move on.
On quite a few occasions I've done this and the apparently unrelated item cures the fault.
Shaun.

Re: td4 freelander non start

Posted by les smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1209' width='330' height='300' border=0 style='border:none;'> on September 19, 2011, 5:37 pm, in reply to "Re: td4 freelander non start"
Leslie Smith

Aye. You could be right. Too many times I try to save the customer money and it usually comes back to bite me. The day I have had I could see it far enough. Don't know when I will get back to it but will keep you informed.
Cheers
Les

Re: td4 freelander non start

Posted by James Eardley <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3143' width='330' height='300' border=0 style='border:none;'> on October 9, 2011, 11:59 pm, in reply to "Re: td4 freelander non start"
James Eardley

Hi scope/multimeter the fuel rail pressure sensor check voltage when cutting out at 1500 rpm.
If the FPS looses its ground reference from the ECU or if it is unplugged/ dodgy connection the ECU sees 5v and presumes the fuel pressure is sky high. The ECU inturn drives the inlet metering valve shut= no fuel pressure.

There is a modified wiring loom and sensor for this particular fault but, I've sorted 4 out by just cleaning and squeezing terminals for a better connection.

hth
James

« Back to index

[ Diesel Diagnostics ]

Copyright © uk autotalk