'98 V6 - really rough running - SaabCentral Forums
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  #1  
Old 6th August 2007
BigDave76 BigDave76 is offline
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Default '98 V6 - really rough running

My girlfriend has the above car which has covered aproximately 120k miles.

Over the past few weeks it has developed a problem where it starts to splutter a little - especially when slowly following traffic at part throttle. Initially when you floored it the engine would pick up and pull away easily, but over the weekend it was still coughing and spluttering even when you did that.

I've read lots of posts about the DI problems, could that be something to do with it or would it be something else ?
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  #2  
Old 6th August 2007
Gazolzwurf Gazolzwurf is offline
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Easiest job first, clean the throttle body.

Search 'throttle body' on 9-5 forum. You don't neccesarily need to find details for the TB on the V6. The guide for cleaning the TB on the I4 will give you enough info to work on yours. If that doesn't solve it come back and somebody will advise next steps.
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Old 7th August 2007
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Kermit Kermit is offline
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When were the plugs and air filter last changed?
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Old 7th August 2007
BigDave76 BigDave76 is offline
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Plugs and air filter were changed at the last service which was about 10k miles ago...

Is it worth cleaning the throttle body and giving it a mini-service (plugs, oil and filters) at home to see if it helps before splashing out 137+VAT (each) on the DIC's ?
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Old 8th August 2007
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Quote:
Originally Posted by BigDave76
Is it worth cleaning the throttle body and giving it a mini-service (plugs, oil and filters) at home to see if it helps before splashing out 137+VAT (each) on the DIC's ?
Most definately, also consider changing the fuel filter. If its original at 120k its long overdue.
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Old 8th August 2007
BigDave76 BigDave76 is offline
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Kermit, thanks for the reply...just a few more questions:

Is changing the fuel filter an easy enough DIY job when you consider that I am more used to working on the classic Mini ?

Where is the best place for parts ? I have looked at the Eurocarparts, GSF, Elkparts and PartsForSaabs.com or am I better going direct to the local dealer but fitting the bits myself ? One thing I did notice about the websites is that there is more stuff listed for the 4 cylinder engines than there is for the V6...I guess that's just because they are less common.

And finally, would we notice the benefit of fitting a performance air filter element like the blue JR ones that are advertised ?

Thanks for all the advice, it is a gorgeous car when it goes nicely and we would love to be able to keep it.
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Old 8th August 2007
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Quote:
Originally Posted by BigDave76
Kermit, thanks for the reply...just a few more questions:

Is changing the fuel filter an easy enough DIY job when you consider that I am more used to working on the classic Mini ?
Looks easy enough...



There's also a guide in the "FAQ's & minor maintenance" sticky.

Me personally, i use PartsforSaabs. I found GSF and Eurocarparts don't keep a lot of stock for Saabs (V6 parts even less so) ,whereas PFS can supply most parts within 24 hours and the pricing is considerably cheaper then main dealers.

As for air filters, i noticed no difference from a drop in "performance" air filter, the paper OE ones are good for 300bhp
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Old 8th August 2007
BigDave76 BigDave76 is offline
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Well, I have just placed an order with PFS, but can anyone advise me what the oil capacity is ? I've ordered 5 litres but wonder whether it is enough...

The bits should be arriving on Friday (I paid for the next day delivery) so I can look forward to a busy weekend - what a way to spend your birthday !!!

Just need to recover all my tools from the ex-wife's garage...
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Old 8th August 2007
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V6 will need 4.5 litres for a change.
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  #10  
Old 13th August 2007
BigDave76 BigDave76 is offline
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Well, spent the morning of my birthday changing the plugs (nice and easy ), air filter (easy enough), attempting to remove the sump plug in order to do an oil change (b***ard thing wouldn't budge , just ended up rounding the head even vice grips had no luck) and gave up before I got to change the fuel filter.

Have resorted to booking the car in to a local garage to see if he can remove the sump plug (I've got a spare), complete the oil change and replace the fuel filter.

When my girlfriend spoke to him on the phone he suggested that the problem sounded like a fault in the DIC...
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