No Start............
- Thread starter scam75
- Start date
scam75
Well-known member
Ok, made up a DME jumper and the fuel pump doesn't run. I remember we had an issue with the fuel pump after the rebuild as the car had lain outside for a year with the fuel pump unplugged from the loom. My mate played about with the wires and got it to work again, and it's been (mostly) fine for 3 years and 15k miles. I would imagine the fuel pump wiring connectors are my next port of call.
Hope the hunt goes well (Otherwise happy to swap tales of woe) - I'm having all sorts of problems with my S2 that just doesn't want to start (doesn't sound like it is trying to catch). Interesting what you said about the coil - mine also is within spec so I haven't changed it yet. Could be in the market for an AFM gasket as I didn't change it when I had mine reconditioned earlier this year.
scam75
Well-known member
Thanks BBN, I've been keeping up to date with your thread, just as annoying as mine but you have dived way deeper.
So, in better news for me, finally found a weather (and work!) window to trudge out in the freezing fog and get the arse end up on axle stands. Ignition on, DME jumped, reached for fuel pump loom plug (it leaves the tank and a joins to a round plug near the rear beam), wiggled it and the pump fired up. So this is my problem. Annoyingly, and not wanting to break it further, it refused to dislodge from the loom for a clean/inspection. The join is right inside an O-clamp that keeps it in place. I did find the plug shielding from the pump end to be somewhat loose which isn't obviously great. Lots and lots of wiggling and the pump kept running, so have pressed the connector as far in as I could, slid the shield back to where it was, refitted the DME relay and went for a longish drive. Needed fuel (so heart in mouth in case of a no start due to that plug, or a no start due to the battery being low after much cranking!) but she started fine. Did another 10 or so trouble free miles and got home. Going to attempt to go for a haircut and get to the supermarket after work, so some miles and a few stop/starts needed. Hopefully all is ok. I am trying to get a time to go to my mates garage for a proper fix but of course not only is he 25 miles away, he is also up to his neck in jobs. So it will be fingers crossed for a bit and at least i know what the fault is and what to wiggle if I get stuck. DME jumper added to spare DME in the glove box!
Stuart
So, in better news for me, finally found a weather (and work!) window to trudge out in the freezing fog and get the arse end up on axle stands. Ignition on, DME jumped, reached for fuel pump loom plug (it leaves the tank and a joins to a round plug near the rear beam), wiggled it and the pump fired up. So this is my problem. Annoyingly, and not wanting to break it further, it refused to dislodge from the loom for a clean/inspection. The join is right inside an O-clamp that keeps it in place. I did find the plug shielding from the pump end to be somewhat loose which isn't obviously great. Lots and lots of wiggling and the pump kept running, so have pressed the connector as far in as I could, slid the shield back to where it was, refitted the DME relay and went for a longish drive. Needed fuel (so heart in mouth in case of a no start due to that plug, or a no start due to the battery being low after much cranking!) but she started fine. Did another 10 or so trouble free miles and got home. Going to attempt to go for a haircut and get to the supermarket after work, so some miles and a few stop/starts needed. Hopefully all is ok. I am trying to get a time to go to my mates garage for a proper fix but of course not only is he 25 miles away, he is also up to his neck in jobs. So it will be fingers crossed for a bit and at least i know what the fault is and what to wiggle if I get stuck. DME jumper added to spare DME in the glove box!
Stuart
Stuart,
Glad to hear you've got it sorted. Having given the electrics a good optical b*ll*cking I'm only a few steps away from digging out the calibration stick for some percussion engineering.
scam75
Well-known member
Cheers. Made it to the barbers then the supermarket then home again with no issues thankfully, though won't rest till the wiring is sorted properly. Knowing what the problem is though is a huge relief.
It will be something stupid causing your issue, these issues almost always are, it's finding it that causes so much grief! I've got 5 x AFM gaskets sitting here, but I think the S2 is a different gasket from the turbo, and is not available. Can't be that much different though, can it? Part number for the turbo gasket is 928 110 201 01 if you want to check.
Stuart
It will be something stupid causing your issue, these issues almost always are, it's finding it that causes so much grief! I've got 5 x AFM gaskets sitting here, but I think the S2 is a different gasket from the turbo, and is not available. Can't be that much different though, can it? Part number for the turbo gasket is 928 110 201 01 if you want to check.
Stuart
Really interesting thread to follow Stuart. Thanks. I've thankfully no problems as yet with my 2.7 944 but it's good to learn.
One point to share from my limited experience with a 944 is that I fitted a Focus 9 Tech Solid State DME and kept the OE style DME (and a second the PO had in glove box) as a spare. I know the SS version costs more but it seems a great way to eliminate some very common issues. I bought the "basic" version which also has a pump prime function when the ignition is turned to "on". It's lovely to hear the pump prime before firing up the engine and I believe the cars starts with less delay. Obviously you know if your pump is working immediately.
The other point about these SS units is that I now see that their "diagnostic" version is available from the same UK supplier (Type 911). I don't think it was listed when I looked for mine in October, unless I just missed it. The benefit of the diagnostic unit is that there are 4 lights on the top of the DME. These would have immediately (or so I believe) have told you that the fuel pump was indeed not working (and identifies couple of other issues).
Might be worth exploring once you've tried a further clean up of the plug/connector.
Where are you based?
One point to share from my limited experience with a 944 is that I fitted a Focus 9 Tech Solid State DME and kept the OE style DME (and a second the PO had in glove box) as a spare. I know the SS version costs more but it seems a great way to eliminate some very common issues. I bought the "basic" version which also has a pump prime function when the ignition is turned to "on". It's lovely to hear the pump prime before firing up the engine and I believe the cars starts with less delay. Obviously you know if your pump is working immediately.
The other point about these SS units is that I now see that their "diagnostic" version is available from the same UK supplier (Type 911). I don't think it was listed when I looked for mine in October, unless I just missed it. The benefit of the diagnostic unit is that there are 4 lights on the top of the DME. These would have immediately (or so I believe) have told you that the fuel pump was indeed not working (and identifies couple of other issues).
Might be worth exploring once you've tried a further clean up of the plug/connector.
Where are you based?
scam75
Well-known member
Hi Martin
I am in Scotland near Glasgow.
Yes those SS DME's are a good idea and the one with the lights sounds good. In 16 years I don't think I've had a DME relay fail. I did replace the original with a 993 part number one as a matter of preventative maintenance, and have a spare 993 part number unit in the glovebox. The pump prime is a great idea. The jumper wires only take 30 seconds to plug in and also tell you immediately if your fuel pump is running, just not as pleasing on the eye! Jumper wires now living in the same box as the spare DME in the glove box.
Car has been fine last couple of days, I will be doing a proper fix on the poor connection when I get a chance.
I had the car down your way last year on my road trip, crossed from West to East via York. Some lovely scenery.
Stuart
I am in Scotland near Glasgow.
Yes those SS DME's are a good idea and the one with the lights sounds good. In 16 years I don't think I've had a DME relay fail. I did replace the original with a 993 part number one as a matter of preventative maintenance, and have a spare 993 part number unit in the glovebox. The pump prime is a great idea. The jumper wires only take 30 seconds to plug in and also tell you immediately if your fuel pump is running, just not as pleasing on the eye! Jumper wires now living in the same box as the spare DME in the glove box.
Car has been fine last couple of days, I will be doing a proper fix on the poor connection when I get a chance.
I had the car down your way last year on my road trip, crossed from West to East via York. Some lovely scenery.
Stuart
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