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Kia Sorrento 2.5 2005 - Poor starting, code P1188 fuel pressure leakage - Fixed #

Posted by Pete Mutlow on January 16, 2014, 2:26 pm

Year of Manufacture *: 2005
Engine Size and Code *: 2,5
( Optional ) Scanner Used: Autocom + ACR4 G2
( Optional) Fault Codes: Fault Code P1188 - Fuel Pressure Leakage

Hi All,

I would be grateful for any inputs on this problem. It belongs to my next door neighbour and has asked me to have a look at the problem.

History: The initial running problem was when the vehicle was under load it can cut out, drop into limp but after restarting by the side of the road, would run perfectly again. He has put up with this problem for a couple of years and basically drove around the problem.

Diagnostics: Not much I'm afraid. I went and had a look at the vehicle just prior to Xmas and sadly apart from the fault code only EOBD info was available which is quite limited and of not much value...ie Fuel Pressure etc. Hunting on the internet drew me to a known problem on these vehicles whereas the coating within the fuel tank clogs up the fuel pick up and sieve. The fuel filter hadn't been changed for a while so the first stop was to change this which was done with an after-market diesel filter. He also complained of intermittent long cranking on start-up. The vehicle failed to start a couple of days ago after an MOT but fired up instantly on a sniff. This morning it would not start. It cranks over at a good speed with and without a booster pack. However it started instantly on a sniff. The same fault code was logged. Freeze Frame tells me it occurred 4km again which he concurs that it went into limp when he tried to put it under load. This was cleared again and under continuous cranking this morning no fault codes appeared at all.

Question: Is this poor starting related to his P1188 problem? Perhaps he has two separate problems. He intends to replace the diesel filter again with a Kia OE and then have a look at the pick-up inside the fuel tank. I would be grateful for thoughts during the interim.

Regards

Pete M

Re: Kia Sorrento - Poor Starting

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on January 16, 2014, 6:25 pm, in reply to "Kia Sorrento - Poor Starting"
Kevin Apps

Pete

What is FRP cranking? Bosch system ? Do a Leak off, and a pump max pressure test.

I know what i would suspect but with-out testing i,m not going to guess.

Kev.
ps is P1188 related to poor starting, YES.

Re: Kia Sorrento - Poor Starting

Posted by Shane gray <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3442' width='330' height='300' border=0 style='border:none;'> on January 16, 2014, 7:35 pm, in reply to "Kia Sorrento - Poor Starting"
Shane Gray

Hi,
Are this the ones that the fuel pumps break up.
Do a leak off test on injectors and if they fail check fuel filter for metal filling which would have come from pump.
Shane

Re: Kia Sorrento - Poor Starting

Posted by Steve Shaw <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on January 16, 2014, 9:53 pm, in reply to "Kia Sorrento - Poor Starting"
Steve Shaw

Hi Pete
we had cutting out & long crank problem with one of these last year after we serviced it
it turned out to be the fuel filter head/non-gen filter combination, we got a new genuine filter/head assembly & problem solved, it seemed to be fairly common occurrence according to local dealer

Steve

Re: Kia Sorrento - Poor Starting

Posted by Pete Mutlow <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1569' width='330' height='300' border=0 style='border:none;'> on January 17, 2014, 2:20 pm, in reply to "Re: Kia Sorrento - Poor Starting"
Peter Mutlow

Thanks all for your help on this one. I think unless the fuel filter/fuel filter head change and the fuel tank issues solves the problem on this, I am going to be stuffed. I cannot provide the information that has been requested apart from the fact that it is Bosch Common Rail. As previously mentioned I can get no relevant live readings, nor do I have the equipment to physically measure the FRP etc. Auto-data is next to useless as far as information goes but it does show injector opening pressure at 1350 Bar. I was hoping to measure the voltage readings at the FP sensor and compare but that avenue has disappeared.

I will post any further findings.

Regards

Pete M

Re: Kia Sorrento - Poor Starting

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on January 17, 2014, 8:33 pm, in reply to "Re: Kia Sorrento - Poor Starting"
Mark Carter

>>> Auto-data is next to useless as far as information goes but it does show injector opening pressure at 1350 Bar.<<<

I hope not !!!

Modern cars, Its all wizardry and witchcraft