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Idler Bushing Replacement


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#1 Tim_C.

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Posted 02 December 2015 - 04:16 PM

My '85 Auto started making a clunk at certain times when the RF wheel would go over a small driveway curb, etc... So when I looked for the cause, I realized there were no bushings at all at the idler arm! They must have cracked (hard poly or nylon), and then they spit out entirely! With the wheel off the ground, I could cause the arm to slide up and down the frame mounted post with very little effort.
So I ordered a idler arm repair kit from NAPA, even though I think I have one laying around somewhere. LoL!
It took me longer to put the front of car up on jackstands and pull the RF wheel, than it did to install the bushings! One nut to remove. Very easy, and cut and dry as far as what to do. I simply leaned up the post and the inside of the idler. Inspected it and saw no damage whatsoever. I inserted the new bushings and put marine grease on the inside diameter of them. the 'kit' came with the new bushings (one for top and one for bottom), a washer and a new locknut. The washer had flat spots on it that the OEM post didn't have, so I just used the OEM washer since it was still good.
It now steers better than ever. Much more response with less effort, and no clunk noise when I go over bumps. Big difference for about $30. I could have got away with just the bushings for $8 plus shipping.
There is absolutely no play in that joint with new bushings. So if you see any play at all, I would replace them.
'87TSi .510Roller Cam, JE Forged, TS Rings & plateau honed walls, lightened rods, race prepped crank, mains line honed, balanced, 17C, 3"EX, 2"HardPipes, AlFly, rrfpr, 88trans, 3.90's w/posi plate mods, polyBushings, STSprings, KYBStruts, Camber Plates, CustomAlternator
Traded for new set of tires for my wife's Buick: '87 TSI Gold that needs just about all steering and suspension parts replaced, injectors, a new transmission, clutch, and various electrical gremlins. New owner is a mechanic who is already driving it. I couldn't stand letting it sit any more!
'86 ESiR - OEM Roller Cam, Wiseco Forged 8:1 Pistons, Chad's equal length header, TEP T3/T4 turbo, ACT HD clutch, Fidanza Fly, custom 3" exhaust, 3 core oversized radiator, O-ringed block, AJUSA metal shim head gasket, Dawes Device boost controller
'85 Plymouth Conquest Auto , Wiseco 8:1, super light pins, shaved rods, hi-torque cam, 2.5 Exhaust
'84 Dodge Conquest Parts car
'83 Starion - Gutted stock exhaust with '87 TSi muffler, New engine with: BS Elim,forged Wisecos,balanced,Schneider274H,marnal w/oversized stainless valves
'83 Cannonball Run II Jackie Chan car, Basic ring and bearing job w/less than 6K original miles on body, steering, suspension, & rear end, Lightened stock fly, BS Elim, Walbro 255LPH FP, NEW Clearwater head with all new parts, intercooled, 14G turbo, 2750 car weight
'96 Mitsu Mirage w/rebuilt head. Gets 35+MPG.
'87 Dodge Ram50 4WD Rebuilt engine, fresh stock head, Weber carbed, BS elim. Runs great now!
'97 Buick Ultra (supercharged Park Avenue)





#2 importwarrior

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Posted 02 December 2015 - 08:30 PM

I got the idler arm bushings from rock auto.

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#3 TexasQuest

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Posted 02 December 2015 - 08:39 PM

Whiteline makes poyurethane idler arm bushings FYI.
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View PostJohnnyWadd, on 04 March 2010 - 10:01 PM, said:

my shaft was big i dont know what your talking about.

#4 Tim_C.

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Posted 26 December 2015 - 08:10 PM

Yes, the Rockauto ones are cheaper and would do the job just fine.
Thanks for the info about Whiteline. My '87 with all poly bushings, is now making the same noise. I'll have to check the idler arm bushings before I drive it again. I bet poly is a lot better for these bushings. Especially for people like us who drive it hard into corners, etc.. From the noise it makes with bad or no bushings, I can tell they take a beating from potholes, and bumps in the road.
'87TSi .510Roller Cam, JE Forged, TS Rings & plateau honed walls, lightened rods, race prepped crank, mains line honed, balanced, 17C, 3"EX, 2"HardPipes, AlFly, rrfpr, 88trans, 3.90's w/posi plate mods, polyBushings, STSprings, KYBStruts, Camber Plates, CustomAlternator
Traded for new set of tires for my wife's Buick: '87 TSI Gold that needs just about all steering and suspension parts replaced, injectors, a new transmission, clutch, and various electrical gremlins. New owner is a mechanic who is already driving it. I couldn't stand letting it sit any more!
'86 ESiR - OEM Roller Cam, Wiseco Forged 8:1 Pistons, Chad's equal length header, TEP T3/T4 turbo, ACT HD clutch, Fidanza Fly, custom 3" exhaust, 3 core oversized radiator, O-ringed block, AJUSA metal shim head gasket, Dawes Device boost controller
'85 Plymouth Conquest Auto , Wiseco 8:1, super light pins, shaved rods, hi-torque cam, 2.5 Exhaust
'84 Dodge Conquest Parts car
'83 Starion - Gutted stock exhaust with '87 TSi muffler, New engine with: BS Elim,forged Wisecos,balanced,Schneider274H,marnal w/oversized stainless valves
'83 Cannonball Run II Jackie Chan car, Basic ring and bearing job w/less than 6K original miles on body, steering, suspension, & rear end, Lightened stock fly, BS Elim, Walbro 255LPH FP, NEW Clearwater head with all new parts, intercooled, 14G turbo, 2750 car weight
'96 Mitsu Mirage w/rebuilt head. Gets 35+MPG.
'87 Dodge Ram50 4WD Rebuilt engine, fresh stock head, Weber carbed, BS elim. Runs great now!
'97 Buick Ultra (supercharged Park Avenue)

#5 psu_Crash

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Posted 10 April 2016 - 10:20 AM

Anyone thought of putting a grease fitting on the idler arm? Have mine out right now and I plan to put a grease fitting in.
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