04-25-2024, 03:57 PM
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#1
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Junior Member
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Join Date: Apr 2024
Posts: 17
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Junior Member
Join Date: Apr 2024
Posts: 17
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minor emergency currently broke down please advise thanks!
my friend just left my house after visiting on her roadtrip and made it only about 20 miles away up the mountain (i live in arizona) she and her kid hitchhiked back and we are now going back out to try and figure out the problem
here's the info I have so far, will update:
1985 toyota 4runner
going down hill, extreme grinding sound
she would stop accelerating and then it would whine loudly
but when she came out of gear all the bad sounds would stop
but then she would lose power to Steering AND brakes
but like intermittently or like flickering in and out
but she was still able to downshift and did not stall
still running, still has electric, but couldn't keep driving without the brakes.
I'm confused because AFAIK the power and brakes should be completely independent systems although I did read that maybe the ABS uses power from the steering on some models?
all tips welcome hoping to avoid a long delay and mechanic visit.
Thanks!
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04-25-2024, 04:45 PM
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#2
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Senior Member
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Join Date: Oct 2013
Location: illinois
Posts: 1,649
Real Name: Ron
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Senior Member
Join Date: Oct 2013
Location: illinois
Posts: 1,649
Real Name: Ron
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Wild guess, but did a brake fail, such as a pad going full metal contact, resulting in noise, erratic braking?
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2003 Limited, V8, AWD. K&N, Dobinson IMS/FJ springs,, SPC UCA, Super Pro bushings in front LCA and in all rear control arms, Michelin 265/65R17 LTX/Defenders, stock wheels with homemade center caps, Stop Tech slotted rotors w/Posi Quiet pads all around, spare tire relocated to inside cargo area.
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04-25-2024, 06:59 PM
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#3
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Junior Member
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Join Date: Apr 2024
Location: MT
Posts: 4
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Junior Member
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Location: MT
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Seriously doubt there is any electrical assistance to steering or brakes in a 1985 vehicle. AFAIK brakes would be vacuum assisted and power steering hydraulic.
Losing ABS (if equipped) should not disable the brakes, just the ABS function.
I wish I were more familiar with this age 4runner to give you more assistance, hopefully someone more knowledgeable will chip in.
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04-26-2024, 03:42 PM
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#4
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Junior Member
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Join Date: Apr 2024
Posts: 17
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Junior Member
Join Date: Apr 2024
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The truck has been moved to a mechanic.. we got out there and looked it over but couldn't find any external problems. I believe a rattling sound is coming from inside the motor.
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04-26-2024, 05:43 PM
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#5
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official vendor
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Join Date: Apr 2024
Location: Brockton, MA
Posts: 51
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official vendor
Join Date: Apr 2024
Location: Brockton, MA
Posts: 51
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not sure why a internal motor problem would cause steering/braking issues. and in an 85 the brakes arent electric so that seems odd
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04-27-2024, 03:15 PM
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#6
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Moderator
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Join Date: Jun 2004
Location: the Socialist State of Maryland
Posts: 11,490
Real Name: The Chosen One
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Moderator
Join Date: Jun 2004
Location: the Socialist State of Maryland
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Real Name: The Chosen One
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Quote:
Originally Posted by jmauer
my friend just left my house after visiting on her roadtrip and made it only about 20 miles away up the mountain (i live in arizona) she and her kid hitchhiked back and we are now going back out to try and figure out the problem
here's the info I have so far, will update:
1985 toyota 4runner
going down hill, extreme grinding sound
she would stop accelerating and then it would whine loudly
but when she came out of gear all the bad sounds would stop
but then she would lose power to Steering AND brakes
but like intermittently or like flickering in and out
but she was still able to downshift and did not stall
still running, still has electric, but couldn't keep driving without the brakes.
I'm confused because AFAIK the power and brakes should be completely independent systems although I did read that maybe the ABS uses power from the steering on some models?
all tips welcome hoping to avoid a long delay and mechanic visit.
Thanks!
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Brakes and steering are 2 different systems. Brakes have a vacuum power assist and the power steering has a belt driven pump. Both require the engine to be running for the power assist functions to work. Both will work without engine running but require a lot more effort to work. No ABS on an '85.
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'84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, 2" drive train lift, BudBuilt x-member/skid, 30 spl Longs
'83 Toy P/U - Buick 231 V6, Holley 4 bbl, Weiand intake, Downey headers, TH350 w/700R4 low gearset,
'89 4Runner SR5 - stock
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04-27-2024, 03:19 PM
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#7
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Moderator
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Join Date: Jun 2004
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Join Date: Jun 2004
Location: the Socialist State of Maryland
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There's many internal engine problems that could make noise, but the most common would be a worn/loose timing chain slapping inside the timing chain cover. The chain should be replaced every 100-115K miles or so, has that ever been replaced?
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- the Internet - the mother-ship of people who don't know much and aren't afraid to go public
'84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, 2" drive train lift, BudBuilt x-member/skid, 30 spl Longs
'83 Toy P/U - Buick 231 V6, Holley 4 bbl, Weiand intake, Downey headers, TH350 w/700R4 low gearset,
'89 4Runner SR5 - stock
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05-15-2024, 01:39 AM
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#8
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Member
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Join Date: Nov 2023
Location: Stuttgart
Age: 40
Posts: 88
Real Name: Lukas Weber
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Member
Join Date: Nov 2023
Location: Stuttgart
Age: 40
Posts: 88
Real Name: Lukas Weber
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Quote:
Originally Posted by jmauer
my friend just left my house after visiting on her roadtrip and made it only about 20 miles away up the mountain (i live in arizona) she and her kid hitchhiked back and we are now going back out to try and figure out the problem
here's the info I have so far, will update:
1985 toyota 4runner
going down hill, extreme grinding sound
she would stop accelerating and then it would whine loudly
but when she came out of gear all the bad sounds would stop
but then she would lose power to Steering AND brakes
but like intermittently or like flickering in and out
but she was still able to downshift and did not stall
still running, still has electric, but couldn't keep driving without the brakes.
I'm confused because AFAIK the power and brakes should be completely independent systems although I did read that maybe the ABS uses power from the steering on some models?
all tips welcome hoping to avoid a long delay and mechanic visit.
Thanks!
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Given the symptoms, it could be a problem with the powertrain or drivetrain. Probably, there's an issue with the transmission, differential, or even the transfer case. Also, maybe, check the transmission fluid level and condition.
Regarding the power loss to both steering and brakes, while these systems are typically independent, there could be a common issue affecting both. This be a problem with the power steering pump or a vacuum leak messing with the brake booster.
As for the rattling sound coming from inside the motor, this could mean an internal engine issue, like maybe, a worn-out bearing, piston slap, or even a damaged valve train component.
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