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Discussion Starter · #1 ·
Hi all,
I,ve had the Saab since about march, after about 2 months it started cutting out and or wouldn,t start. Or should I say started and then kept cutting out.
Went to the garage for sorting out and was diagnosed as the fuel pump, so the one on the fuel tank was replaced. After a month same problem.
Into the garage again, this time blamed on the fuel filter. After a few weeks same problem.
So into the local main dealers, diagnosed as seals around the injectors. These were replaced by the garage I bought the car from. Again no joy.
So into the main dealers again, this time main fuel pump diagnosed as the problem, so replaced. Again no joy.
Next the ECU was replaced. Again no joy.

HELP..... please .......
 

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Wow, It sounds like the places your taking your car have no idea what they're doing! I would take it back to the dealer and complain about putting hundreds of dollars into fixing a problem that was never fixed. A fuel pump failure was not an intermediate problem when mine went. I've heard that when the pump go they just go. OK, and why wasn't the fuel filter replaced when the pump was the first time? I would think a shop would know that you're supposed to replace both at the same time. Have you checked your plugs? Sounds like it could be a misfire,
 

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WaSaabiPSI said:
Have you checked your plugs? Sounds like it could be a misfire,
I think this is one of those strange creatures powered by diesel fuel. Wish we could get them over here! It's actually illegal to sell new diesel passenger vehicles in Massachusetts! Perhaps with the new legislation requiring 35mpg min average, common sense will prevail!
 

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Does these shops really have the equipment and trained personnel to even attempt the servicing of a DIESEL engine ??

Diesel operates under very, very high pressures as opposed to the old gasoline low pressure - but this too is changing..
I've owned 2 VW Diesels, and 1 Mercedes - only several minor problems..due to their simplicity.

And the customer should not have to pay for any misdiagnosis..
The Diesel fuel must be clean, the filter must be renewed more often than is usual....
Are you using bio-Diesel in the winter without any fuel line heater ?
 

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Discussion Starter · #5 ·
Well, as I say at the moment its in the hands of the main dealer who are waiting for it to break down/ cut out so they can re diagnose the problem. They say all major parts have been replaced, thats why i was enquiring if any body had had similar probs in order to give them a hint.

Thanxs for the replies so far.
 

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The only time the VW Diesel stopped running was when the fuel "froze".

Bio Diesel will solidify a bit sooner than kerosene..Use a fuel line heater to alleviate this condition...
I cannot relish your position:( .
For what it is worth I'd suspect the fuel lines.
If these are in a state of break-down, then fuel pressure can be inexplicably lost..I have seen this happen; but I do not think 7 years is enough time. The hose cracks, developes pin holes and air is drawn in.
 

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As he is in jolly old England and the problem started in the summer, his problem should not be gelled fuel lines. I suggest he goes back to the service station that did the "repair" work and tell them in no uncertain terms that he is fed up with paying for their education and they should get on and fix the problem!
 

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Granted, Ive got a 03 SS diesel, but the systems are similar.

1) The pump near the tank only operates the auxilary heater and will have no effect on the engine.
2) Unlike petrol engines, the diesel injection pump suctions fuel out of the tank at ~-2 psi, then pressurizes it greatly for the injectors. As has been mentioned being positive the fuel filter flows (a $10 item) is essential. An auxilary fuel supply hooked up to the injection pump via the return hose from the injectors will help eliminate(or confirm) any clog between the tank and the pump. Also make sure the return hoses and Ts are holding vacuum.
3)No "check engine" light? A bad air mass meter or pressure sensor would light it.
4) Intake clean and EGR functioning OK?
5) A Vauxhall/Opel specialist may have more experience with these as they use the same diesel as Saab.
 

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Discussion Starter · #9 ·
Thanks again for the responses,

I am using regular diesel so the gelling problem combined with the problem occuring during summer should not be an issue.
The main dealer has a very good reputation ( I have asked around), so I can see this being something really oddball.
I will pass on the suggestions on monday and will update with any results,

many thanks again.
 

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Discussion Starter · #10 ·
I,ve just picked up my car from the main dealers. They have had the car for about 2 weeks, and have only been able to have the car cut out on one occasion. Unfortuanatly they have not been able to determine what the fault is.
The fault is intermittent, some times occuring a few days regularly then all ok for 2-3 weeks. The main dealer says wait for it to happen again and bring it back.
I noticed some forum postings regarding the CPR failing and causing very similar problems. When I asked the service manager about this, he said this is only the case with petrol engines and not diesel.
Any thoughts ???
 
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