Bad noises ... with video
- Thread starter jjorgensen52
- Start date
Robert Lone
MUTANT
Re: Bad noises ... with video
KETCH-UP, how did you torque the crank bolts w/ the tranny in place?
^^^^^^^^^ I've got $20 on this being the problem...... :tup:KETCH-UP said:
KETCH-UP, how did you torque the crank bolts w/ the tranny in place?
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
I will check the flexplate, it's a brand new part so I hope it hasn't broken but at least thats an easy fix.
Do not believe the pickup screen was welded
Oil pressure runs about 60 - 65 lbs at idle, about 75 under load
Starter is not the case. I actually crawled under the truck and watched it front startup to shutdown (dad started it for me) ... no contact and all is well. It's actually a direct drive 4.3 starter from a 99 or 00. (my old delco and the new Bosch)
I will check the flexplate, it's a brand new part so I hope it hasn't broken but at least thats an easy fix.
Do not believe the pickup screen was welded
Oil pressure runs about 60 - 65 lbs at idle, about 75 under load
Starter is not the case. I actually crawled under the truck and watched it front startup to shutdown (dad started it for me) ... no contact and all is well. It's actually a direct drive 4.3 starter from a 99 or 00. (my old delco and the new Bosch)
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
We actually did a press channel to clear the rods... I will take a picture while I'm under the truck, it came out pretty cleanlyTHEMADTYPH00N said:
Robert Lone
MUTANT
Re: Bad noises ... with video
If it were the rods, I would think the noise would get louder w/ rpm. However, the broken flexplate gets really quiet under a load. Only when the revs are fluctuating will it make noise. At idle, the rpm is bouncing up and down as much as 30 revs and as the crank speeds up and slows down the the flexplate rattles and raises hell. When you raise the revs w/ the throttle, you put the rotating assembly in enough of a bind to keep the rpm pretty constant and the rattle goes away.
I will be surprised if this isn't the problem in the end. But, I've been wrong as often (or more) as I have been right.
If it were the rods, I would think the noise would get louder w/ rpm. However, the broken flexplate gets really quiet under a load. Only when the revs are fluctuating will it make noise. At idle, the rpm is bouncing up and down as much as 30 revs and as the crank speeds up and slows down the the flexplate rattles and raises hell. When you raise the revs w/ the throttle, you put the rotating assembly in enough of a bind to keep the rpm pretty constant and the rattle goes away.
I will be surprised if this isn't the problem in the end. But, I've been wrong as often (or more) as I have been right.
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
Well, all bets are off. The flexplate was the problem. .... no it was not broken. It had actually worked itself loose from the crank ... Those bolts were torqued to spec less than 5 hours runtime ago :roll: .... in any event, built myself a custom 14" 14mm open ended wrench and tightened them up good.... I will check again when I change the flex plate to converter bolts (I have two of the right ones and one that's wrong). Had to unbolt and shove the torque converter back as far as the trans would allow to do it though.
Well, all bets are off. The flexplate was the problem. .... no it was not broken. It had actually worked itself loose from the crank
... Those bolts were torqued to spec less than 5 hours runtime ago :roll: .... in any event, built myself a custom 14" 14mm open ended wrench and tightened them up good.... I will check again when I change the flex plate to converter bolts (I have two of the right ones and one that's wrong). Had to unbolt and shove the torque converter back as far as the trans would allow to do it though.
QUICK STORM
B.A.M.F. BMW Tech
Re: Bad noises ... with video
glad to hear ou got that figured out, BTW how much was that new starter and whats it from?
glad to hear ou got that figured out, BTW how much was that new starter and whats it from?
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
I think I paid 140 for it... it's off a 1999 vin w 4.3 ... I assume a blazer / jimmy / bravada, but I can get the part number if anybody wants itQUICK STORM said:
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
Pics of the press channels in the oil pan ... sorry for the bad pics, hard to get a good one under the truck :roll:
Pics of the press channels in the oil pan ... sorry for the bad pics, hard to get a good one under the truck :roll:
Robert Lone
MUTANT
Re: Bad noises ... with video
I was wrong about the problem but right about where the sound was coming from.
Glad you found it and it won't cost tons of cash to fix.:tup:
I'll crawl back under my rock now...
I was wrong about the problem but right about where the sound was coming from.
Glad you found it and it won't cost tons of cash to fix.:tup:
I'll crawl back under my rock now...
jjorgensen52
NHSTE - I'm the only one!
Re: Bad noises ... with video
I couldn't get any loctite on them but I torqued them down as tight as I could get them without breaking my hand when the wrench slips off :roll: ... i've put 120 miles on it since and they haven't started rattling again. I'll check them one last time when I put the new converter bolts in tomorrow or weds
I couldn't get any loctite on them but I torqued them down as tight as I could get them without breaking my hand when the wrench slips off :roll: ... i've put 120 miles on it since and they haven't started rattling again. I'll check them one last time when I put the new converter bolts in tomorrow or weds