while taking out the engine i wondered if i needed that computer looking ecu which is connected to every single bit of the engine. five cables go to the carb, another two go to the block, another two to the dizzy, etc etc...


engine control unit

another thing.... what is this??? it seems fuel goes in some way, goes out to the filter another way and a third pipe is there for what....fuel return? do i need it?

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The top one looks like your ecu and the bottom one is part of the emmissions recycle thingy which I think you can bin.

The bottom is the fuel return. Keep it although you may not need it depends on your setup.

Top is ecu keep it and all the loom to the engine.

yep 1st ECU binned & aftermarket used like mega squirt/spark
2nd swirl pot ? to stop fuel starvation not sure if needed I think some please have left it off

[Edited on 22/6/06 by raccoonradar]

oh right so the ecu can be replaced by a megaspark or megajolt for carb engines? didnt know that...

thought there was the possiblility of having the pinto running all by itself.. no electronic gizmos. of course it would have to be perfectly tuned.

pinto ? sure its not cvh ?
Edit:I take it back looking at the info sticker its shows tappet adjustments must be very late pinto

[Edited on 22/6/06 by raccoonradar]

Most likely one of the late carburettored Pinto's that had an ECU controlled carb e.g. stepper motor to control mixture and idle speed etc.

Idealy you need to keep the ECU and engine loom, or replace the carb with one of the earlier purely mechanical types.

Is your engine a 1600?

It would appear that your donor was fitted with the e-max system. The ECU was known for being overcomplicated (hence the many wires) due to its focus on economy (<------ DIRTY WORD!).

One option would be to get a Bosch electronic dizzy and iginition module from a standard pinto. Other would be an after market option like others say.

The second photo shows the fuel/air seperator which incorporates the fuel return system. This will not be needed if you run twin carbs but i would keep it in storage for now in case you have running problems.

Richard

in my experiance keep the ecu and wiring harness and plug as they are like rocking horse sh** when you try and find a sierra with one on. i am using this set up still with twin webers and it is working fine. i will get round to changing over after the summer . cheers scott . if in doubt keep it .

yep i thought it might be somewhat valuable as i would have never thought of a sierra with carbs and an ecu... gave the haynes manual a peep and it does seem to control everything the engine does...
the engine has a few bits and bobs that the haynes manual says its from a cvh...the previous owner probably wanted it to be a cvh but just couldnt afford an engine overhaul
the book said the second thing is a vapor separator and it improves hot starting qualities....i'll just keep it

thanks!

quote:

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Originally posted by jamesbond007ltk
Is your engine a 1600?

It would appear that your donor was fitted with the e-max system. The ECU was known for being overcomplicated (hence the many wires) due to its focus on economy (<------ DIRTY WORD!).

Richard

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If you've room for the ECU then there's no reason not to keep it. To replace it you'd need a new dizzy and carb etc to run any other setup. We had it running on ours as Ford intended and it run very well and reliabley as it had auto choke etc.

The Fuel Vapour seperator (regulator maybe) is well worth saveing as well, we've never run without it but i've heard of people putting them back on and getting an extra 10mpg out of the car. Maybe the float chamber in the carb isin't capable of shutting off the folow of fuel so it bypasses back to the tank through the valve or of you haven't got one just throws it down the cylinders!