The back door handle came undone on my 1979 Ford Granada

This is a UK Model. I am in Canada, so this search query will work better for you than it does for me.

https://www.google.com/search?q=1979+%22ford+granada%22+2.8+valve+clearance+specs

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if your door is unlocked and it wont open from outside the handle to door latch rod has come undone sometimes the clips holding on handle become brittle or some models the rod uses gravity to sit in the latch and can be jarred out.
take door pad off and its all self explainatory or go to body shop they do these 20 times a day and usally wont charge much

It is not the Module, It started and ran fine.Your old school test was very good thinking on your part. You don't say if its auto or standard I assume auto so Neutral switch should be on the steering column under the dash.

Hope this helps. If not there get back to me and I will look it up in old school library. Have to go.
Mike

check ur fuses i had that problem with my turn check ignition fuse

substitute a known good coil.I understand it'll start and run for awhile?...it could be that the fuel system is vapor-locking.

disconnect the battery lead & other wires from the starter motor ,undo the bolts on the starter flange that hold it onto the engine, & if there is nothing in the way the starter should pull straight out,if anything is in the way it will have to be removed first.......hope this helps......cheers

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. If needed, you can pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything inside the door

remove and plug vacume line on the distributer and find timing specs on the motor in the vehicle using timing light hook transducer cable to no# 1 cylinder set the idle to manufacturers specs make shure motor is warmed up to operating temp now point thr timing light at the timing plate on crankshaft pulley start the engine and watch for the mark on the harmonic pulley see where it is at when running now if the mark is not lining up with sugested degrees from manufacturer then u must loosen bolt on distributer only loosen 1/4 turn now rotate distributer clockwise or counterclockwise this will make the mark on the harmonic ballancer allign with manufactures required timing specs after aligning marks tighten distributer and unplug distributer vacume line and plug it back into distributer. and test if u need anymore specifics plz read manual carefully good luck

order a chiltons repair manual for $19.95 from
autozone or any other parts store.