SPI ECU

[fatpasty]

I'm a little puzzled.

Been restoring my SPI for a few years and it's now come to the stage where everything is nearly up to scratch to take to the garage for testing etc etc. But last night I found that a black tube style wire coming from the ECU wasn't attached to any thing. Should this be and if so where it should lead to??

Don't want to fire her up if this is ment to be plugged in somewhere.

Have a google search last night but couldn't find any info on it.

Any help would be good.

Many thanks.

[roscozs]

Is the black tube vaccum pipe? If so the map sensor pipe should go from the ecu to a vapour trap just next to the clutch fluid bottle. Another pipe then leads to the back of the inlet manifold.

[fatpasty]

roscozs said:

Is the black tube vaccum pipe? If so the map sensor pipe should go from the ecu to a vapour trap just next to the clutch fluid bottle. Another pipe then leads to the back of the inlet manifold.

OK Many thanks I will look into it later tonight.

[guru_1071]

if the engine is running you can manually suck the vac pipe thats conected to the ecu and make the revs go up and down.


its a bit of a novelty, but at least it shows that the map sensor is working ok

[fatpasty]

I wonder how you found that out


Yeah I'll have a look later. Like I said was just changing a few components in the engine bay and just found that it was plugged in anywhere.

[guru_1071]

fatpasty said:

I wonder how you found that out

it involved saving a customer a couple of hundred quid on parts that some 'expert' had told her that her car needed to drop the revs down - i sold her a 3.60 vac pipe - problem fixed!

the rubber ends rotting of the pipes are a common problem of tickover problems on the spi's

[fatpasty]

guru_1071 said:

it involved saving a customer a couple of hundred quid on parts that some 'expert' had told her that her car needed to drop the revs down - i sold her a 3.60 vac pipe - problem fixed!

the rubber ends rotting of the pipes are a common problem of tickover problems on the spi's

I see. I will check mine out because I don't even think there was a rubber end to it. Unless it is where the pipe is ment to go.

When I started the car last time it was only running for a couple of minutes and it seemed amazingly hot. The fan was going but not sure if everything is connected or if the water is flowing. Any way to troubleshoot it to work out why is is running so hot or is there a common problem with these?