Question on 900 Turbo (16v) - Fuel Pump

Am wondering if anyone knows where the fuel pump relay is located.

My Haynes covers only the previous 900 Turbo (up to 1985) and I can't find a newer ome; but am pretty sure the relay got moved when the model changed.

Am no expert in any of this but I seem to have a repeat problem of 2 or 3 years ago when there was no "tick" from the fuel pump on switching on. It turned out to be a faulty relay.

So before spending £££s having the ECU taken out and tested it seems worth a fiver to see if a new relay will fix it (I have all the relays out of the previous 900T so hope one of those will work - once I find out where to fit it!)

Big thanks with fingers crossed - SB

Reply to
sb
Loading thread data ...

sb gurgled happily, sounding much like they were saying:

You want the US Bentley manual - it is leagues ahead of the HBoL.

The pump relay on a T16 appears to be above the fuel ECU, behind the interior trim by the (RHD) accelerator pedal.

Reply to
Adrian

Thanks for that, Adrian - tho as I recall there were several relays there; can you say which one of them it is?

On books, I did try to get one of those last time this happened but cdnt find one anywhere. And as the limit of my servicing skills stops only a bit beyond a wheel change I didn't bother anymore.

But yes, I can junp to it when I foresee big costs!

The last time this happened it defeated the AA (who tried hard for 3 hours) and also the (non Saab) garage. I wonder if nayone else has had the problem(?)

Big thanks again - sb

Reply to
sb

Well, if you were to reveal the secret year of your Saab, someone might... But with the hiddent bit of information, no one knows!

Ok, so we've narrowed it down to after 85... Humm, still covers a lot of ground!

Hope you don't get cramps in 'em! Hey, also post what country you are in, some information is specific to different countries.

Reply to
PeterD

I have an extra 900 'factory' service manual. If you are in the US, I'll sell it to you (not intersted in shipping out of the US, too much of a PITA because of the weight of the book).

Reply to
PeterD

I believe the relay is located just above the computer on the right hand side behind the trim carpet under the A pillar. At least, that's where it is on my car. In fact, if you are careful, you can take it out without removing the bolster. The screw is on the other side of the firewall. However, it is difficult to get it back in without removing the bolster. If you have a right-hand drive, it might be different; mine is left-hand drive.

Don Kirkpatrick

Reply to
Don Kirkpatrick

Hi - First my apologies to PeterD, I guess I thought all post 1985 ones were the same - tho as I mentioned I'm not expert. Anyway the car is LHD, UK based, and "G" reg, which as I recall means late 1989, when the 1885 model was changed to 16valve, plus many small changes (like moving that relay!). If memory serves right that was the only model change before the model ended. (I swapped my 1980 900T for the new model and have owned it ever since).

Again my apologies for not saying this before.

To Adrian many thanks again. To Don K the same apology, and thanks your kind offer but I agree, the shipping cost works against it. The reason for not calling out the AA or going to the (non Saab) garage is the high cost and last time anyway the AA couldn't fix it, I found a specialist but he's disappeared. And as the relay cost only a fiver (GBP 5.00) it seems worth trying to fix it myself!

The ECU is indeed on the right as Adrian & Don say - under the side carpet by the accelerator/gas pedal - I didn't take that much notice last time but am sure there's more than one relay there. Can anyone confirm which one it is? Has anyone ever had this problem? (I suppose it could be the fuel pump itself, but in fact in all these years that relay 3 yrs ago is the only thing that's ever gone wrong with the car! Wish they still made them!).

In short, any help of any kind would be v much appreciated.

(I guess I should apologise for not having a book but at the time the old one seemed OK for my level. Since then, I can't find one anywhere). I haven't undone sills & carpets yet, mainly in case someone here has other advice.

Big thanks to all - and sorry aga>I believe the relay is located just above the computer on the right hand

Reply to
sb

OK, that's good (I've a '90 900 16 valve Turbo Convertible, so yours will be similar, though being in the US, some things are on the other side...)

I'll look in my book and see if it says where it is. The book, BTW, is multi-national so it may be that if there is a difference it will note that.

You are right, the electrical system was changed, it seemed each year! Little differences, like relays moving, were a regular PITA...

Reply to
PeterD

My book says the relay closest the door (rear most relay). A standard automotive relay, IIRC, so they are inexpensive, and easy to test by replacement.

Reply to
PeterD

sb gurgled happily, sounding much like they were saying:

The illustration in Bentley shows two - the for'ard one is described as "System Relay", the nearer as the pump relay. But that's for Bosch LH injection. If yours is a later, Lucas, car (big gold relay on the inner wing by the power steering reservoir, 90- Turbo in the UK), then it may be different.

formatting link

Reply to
Adrian

PeterD gurgled happily, sounding much like they were saying:

It's a T16. All we really need to know.

Reply to
Adrian

Many thanks chaps for all your help and input, and sorry to be late back. The breakdown happened away from home so I've been out all day trying to fix it/get it fixed. As last time, the callout service didn't know where the relay is (I'd first tried replacing the "backmost" one but all my relays from the previous 900T (8v) are 4 pole, this one's 5 pole. With a battery across 2 of them, 2 others connected - dunno what the 5th (centre) one is for tho I have a feeling it was That contact that went wrong last time..

Anyway as darkness came over I had it towed to the (non Saab but v helpful) garage. I think they're going to come down on the fuel pump itself - no doubt more than a fiver, even if they can find one!

(Adrian - the ECU IS Lucas but still there are 2 relays above it - the gold thing by the Steering Tank has just 2 wires(?)

Also for Adrian, many thanks for the book link - if the car comes through I'll certainly get one, and save us All a problem!

Again big thanks to all, and I'll report when/if it's fixed - am sure you all dying to know. . . . and even if not, this query has shown this friendly grooup working at its best and that's good to see and know. What shame I can't buy a new (proper) SAAB; I've had a 99 and 2

900 Ts and all have been great - sb

(Thanks!!)

Reply to
sb

sb gurgled happily, sounding much like they were saying:

Yep, that's a resistor for the low-impedance injectors that Lucas use - it's just a very easy way to spot which injection.

Full Lucas diagnostic doc can be downloaded from

formatting link

Reply to
Adrian

Adrian - ah, got you! (I thought it was a resistor but misread you - thought you meant it was a relay - oops).

I must say you're a whiz on links - that pdf is great. But it goes up only to page 98 - did you see that "Fuel pump" is on p234 ! So, er, any idea where that part of it is? Big thanks again.

(No news yet from the garage).

Reply to
sb

oh dear and oops again - yes, it's SECTION 234! (sorry!)

Reply to
sb

Update:- They fitted a new fuel pump and the car is now going (Pump GBP 75; Filter 10; Labor 50 - plus tax). No idea if reasonable or not but the garage is fair and it's good to be mobile again. And again, very many thanks to all for the patience & friendly assistance - sb

Reply to
sb

Doesn't sound too bad a price. Good to hear it's going OK now.

Reply to
PeterD

Sounds fair to me, and looks like they passed on the trade price for the pump too. I'm sure a retail price from a Saab dealer for a pump was 2-

3times that price.
Reply to
Elder

That's nice to know; thanks. In fact it isn't a "SAAB" part - it's made by an outfit called "ScanTech - New since 1986". Oh, and the same part fits a (whispered quietly) v-lvo, too - and also GM Saabs right up to 9-5.

I suppose original parts will soon have an antique value; if they don't already. - sb

PS for the other fellas - I Did take out the relay, And check it, so with thanks to you for your help I guess I Did learn something! Best wishes.

Reply to
sb

The original pumps would have been either bosch or lucs depending on the injection system fitted. As long as it has a decent warranty on the part I wouldn't worry.

Reply to
Elder

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.