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Need to Vent... about to hang it up.

boss351

Member
I will tell you what. I have had this car for 11 years, had one decent summer driving it. Always wanted to take care of it and make it nicer... make it the car I wanted it to be. Ive been trying to do that. I rebuilt the motor, new interior new body panels, paint, you name it, ive done most of it to this car. This motor maybe has an hour of run time on it. I just got the EFI all buttoned up and fired it up for the first time tonight... it fires and runs, but it has a terrible noise coming from the back of the engine. I think it has a busted flex plate. I can not see the torque converter bolts hitting anything. When you turn the motor over with the starter it doesnt make any bad noises... but when the motor fires and takes off it makes a helacious screech and knocking sound .. i am on my last string of hope. what do you think it could be?
 
Few things come to mind.

Spacer plate between flex plate and crank missing, loose flexplate bolts, flex plate bolts too long and bottoming out on converter before getting tight, bolts loose on plate between block and trans,
converter not seated in front pump......

None of these sound like much fun. It could be a lot worse. Keep your chin up, we'll provide the moral support.
 
This has been a long time ago, but for some reason I am not remembering installing a spacer between the crank and flex plate... anyone have a picture of what this looks like?
 
There are for a chebby and are selective but same principle.
Fords typically use one as I recall.

qti-rm-935_w.jpg
 
yep similar for a ford... The bolt pattern only allows it to go on one way. If you put it on, you would probably remember because they can suck to get lined up.
 
Doesn't that spacer go between the bolts and the flexplate, not the flexplate and crank?

Could the starter not be disengaging?

Frank
 
"crustycurmudgeon" said:
Doesn't that spacer go between the bolts and the flexplate, not the flexplate and crank?

Could the starter not be disengaging?

Frank

Yes, and yes.

The plate goes between the flex plate and the bolts. It's simply to make it more rigid and prevent cracks around the bolt holes. It will not effect the spacing of anything. There is, however, the block plate that goes between the engine and transmission and will effect the indexing of the starter if it wasn't installed.

My money is on a incorrect starter, or a starter not fitting right. Shim it with washers and I bet the problem goes away.
 
Does it keep on making the noise, or does it stop after a few moments? After I got the '90 5.0HO/AOD in my 66, my engine was making a noise when starting, like the starter was continuing to run. I was using the old solenoid mounted on the fender and the new solenoid on the 5.0 starter and the starter was continuing to run. I had to move the starter wire on the fender solenoid to the other side to make it stop.
 
All the above plus: did you line up the converter drain plug(s) with the holes in the flexplate. It's possible to bolt the converter to the flexplate and have the drain plugs bending the flexplate if they aren't lined up into the holes.
 
I think i got a similar problem which was the stater in my case.
The bendix from the starter stuck out too much when it was disengaged and hit the teeth from the flexwheel when the engine operates .
You can measure this and you should have about 4mm or about 1/8 inch between the bendix ( the little gear in the starter which comes out when the stater been engaged) and the flexwheel or flywheel .
Hopes this helps. :ide
 
All the above plus: did you line up the converter drain plug(s) with the holes in the flexplate. It's possible to bolt the converter to the flexplate and have the drain plugs bending the flexplate if they aren't lined up into the holes.

Yep, been there, done that.

All of the above is great TS advice.

To remove the starter from the list of culprits..... can you quickly remove the nut/power cable running from the fender mounted starter solenoid down to the starter? Lack of power should cause the bendix to retract......
 
Does the trans have fluid in it? Did you fill the torque converter before installing? If fluid was put in, did you top it off once the motor was running?

Check off the easy stuff first and then move to the hard stuff. Hopefully you won't have to pull the trans.
 
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