Strange noise when take off normal or fast
#1
Strange noise when take off normal or fast
Hi folks, please help me with the strange noises of my 94 AWD. When driving, if I take off fast, it makes a lot of pop noise, but if I take off slowly, then It’s OK. Or when I make a quick acceleration after slowing down then it make noise, but if I take it fairly slow then it’s OK. The frequency is getting worse. My front axles are in good condition (30K miles on a rebuilt pair). I have unplugged the AWD controller box, it didn’t do any difference. All gear shipped OK. So what is that noise in that condition?
My 94 AWD is about 110k miles, good shocks.
Thank you very much for your time,
Mario
My 94 AWD is about 110k miles, good shocks.
Thank you very much for your time,
Mario
#2
need a audio recording
only going straight ahead?
only on turns?
both?
guesses
control arm bushings
drive line ujoints front and/or rear shafts. they go out anytime after 60>100k
transfer case chain or clutch. when was ATF in it changed last and any metal cutting in ATF? the chain will jump teeth when worn
broken/worn shock or sway bar bushings or mounts
only going straight ahead?
only on turns?
both?
guesses
control arm bushings
drive line ujoints front and/or rear shafts. they go out anytime after 60>100k
transfer case chain or clutch. when was ATF in it changed last and any metal cutting in ATF? the chain will jump teeth when worn
broken/worn shock or sway bar bushings or mounts
#4
need a audio recording
>only going straight ahead?
>only on turns?
>both?
Yes, Both
>guesses
>control arm bushings
I will check it tomorrow
>drive line ujoints front and/or rear shafts. they go out anytime after >60>100k
I will bring it to a shop to morrow to check
>transfer case chain or clutch. when was ATF in it changed last and any >metal cutting in ATF? the chain will jump teeth when worn
Changed at 60k mile, (full) replaced with AMSOIL ATF. However I noticed that since switched to AMSOIL the response when accelerate appeared slower. The kick is not as strong as it was (both 94 Aerostar vehicles, the other one-230k miles- is downed 2 weeks ago, transmission relate also)
>broken/worn shock or sway bar bushings or mounts
>only going straight ahead?
>only on turns?
>both?
Yes, Both
>guesses
>control arm bushings
I will check it tomorrow
>drive line ujoints front and/or rear shafts. they go out anytime after >60>100k
I will bring it to a shop to morrow to check
>transfer case chain or clutch. when was ATF in it changed last and any >metal cutting in ATF? the chain will jump teeth when worn
Changed at 60k mile, (full) replaced with AMSOIL ATF. However I noticed that since switched to AMSOIL the response when accelerate appeared slower. The kick is not as strong as it was (both 94 Aerostar vehicles, the other one-230k miles- is downed 2 weeks ago, transmission relate also)
>broken/worn shock or sway bar bushings or mounts
#5
If I take off just lightly on gas pedal than OK, but if I press harder on gas pedal (entrance ramp to freeway) than I got that noise problem.
#6
#7
My front axles fairly new (about 20k miles). I don't see any grease leak, all the boots are intact, however I will take a closer look at the bolts tomorrow. The steering wheel is tight & good.
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#11
When you accelerate or stop, the suspension moves up and down, but the driveshafts do not, so they are supposed to slip in and out freely. If the splines have siezed in place, then the strain on the driveshaft may be the source or your noise. Spray that area well with penetrating fluid and see if that doesn't free that up some. If you can get it out, put some marine grade bearing grease in there. There is supposed to be a boot over that spline, but they rot off and you can't get new ones. My van has a modified CV boot over it.
#12
#14
the light aluminum TC28 transfer case on these Aeros is notorious for leaking along the half case seam. the bolts work loose in the alum case threads and it leaks like a sieve.
take out bolts one at a time and put blue locktight, the non permanent stuff, on the threads and retorque.
the OEM factory steel driveline only made the problem worse. Safety recal TSB on alum. DL replacement
the case only holds 2 qts. mine was half empty when i got it new in '96. leaked out in transit and on lot. had the steel driveline the first year until recall
use only a full synthetic ATF such as Mobil1 ATF, Amsoil or Redline.
the clutch and chain are hard on the lube.
http://www.drivetrain.com/transferca...A%20MODEL%2028
take out bolts one at a time and put blue locktight, the non permanent stuff, on the threads and retorque.
the OEM factory steel driveline only made the problem worse. Safety recal TSB on alum. DL replacement
the case only holds 2 qts. mine was half empty when i got it new in '96. leaked out in transit and on lot. had the steel driveline the first year until recall
use only a full synthetic ATF such as Mobil1 ATF, Amsoil or Redline.
the clutch and chain are hard on the lube.
http://www.drivetrain.com/transferca...A%20MODEL%2028