1991 MITSUBISHI MONTERO Service Manual

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YOKES AND SLIP YOKES
YOKE AND SLIP YOKE INSPECTION








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Condition Code Procedure
Bearing cap bore
distorted .............. A .. Require repair or replacement.
Bent .................... A ............ Require replacement.
Bolt holes elongated .... A .. Require repair or replacement.
Bushing or seal surface
worn, affecting
performance ............ A .. Require repair or replacement.
Leaking through soft yoke
plug ................... A ... Require repair or replacement
of soft yoke plug.
Retainer strap bent ..... A .......... Require replacement of
retainer strap.
Slip yoke broken ........ A ............ Require replacement.
Splines worn, affecting
performance ............ A ............ Require replacement.
Splines worn close
to the end of their
useful life ............ 1 ............ Suggest replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads
missing) ............... A ............ Require replacement.
U-bolt damaged, affecting
performance ............ A ............. Require replacement
of U-bolts.
Yoke damaged, affecting
performance ............ A .. Require repair or replacement.









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\003P - E G R F U NCTIO N T E STIN G

1991 M it s u bis h i M onte ro
1989-95 ENGINE PERFORMANCE
Chrysler Motors/Mitsubishi Corp. EGR Function Testing
All Models
EGR FUNCTION TESTING
Colt Wagon 1.8L, Montero (A/T), Raider (A/T), Sigma,
Van/Wagon & All Other Federal Models (Ported EGR Valve)
1) Disconnect Green-striped hose from throttle body and
connect a vacuum pump to hose end. Plug nipple where hose was
connected to throttle body. With engine temperature 122
F (50C) or
less, and engine idling, apply vacuum to hose. If idle does not change
and vacuum leaks down, system is functioning properly.
2) With engine temperature 176-205
F (80-95C) and engine
idling, apply 2 in. Hg to hose. If idle does not change, and vacuum
holds, system is functioning properly.
3) Apply 7.7 in. Hg. If vacuum holds and idle becomes
unstable or engine stalls, EGR system is functioning properly.
Montero (M/T), Raider (M/T) & All Other California
Models (Ported EGR Valve)
1) Connect a vacuum tee into Green-striped hose from EGR
valve and connect a vacuum pump to vacuum tee. With engine temperature
68
F (20C) or less and engine idling, snap throttle opened and
closed. If no change in vacuum reading on vacuum pump gauge is
detected, system is functioning properly.
2) With engine temperature 158
F (70C) or higher and engine
idling, snap throttle open to race engine. If vacuum is now indicated
on vacuum pump gauge, system is functioning properly.
3) Using a vacuum pump, apply specified vacuum to open EGR
valve. See appropriate EGR VALVE SPECIFICATIONS table. If idle becomes
unstable or engine stalls, EGR system is functioning properly.
EGR VALVE SPECIFICATIONS TABLE (1989 Models)









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Application Closed Open
In. Hg In. Hg
Colt, Colt Wagon,
Mirage ....................... 1.8 ................ 7.7
Colt Vista .................... 2.1 ................ 6.8
Galant, Sigma ................. 1.7 ................ 7.5
Montero, Raider,
Van/Wagon .................... 1.9 ................ 6.7









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EGR VALVE SPECIFICATIONS TABLE (1990 Models)








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Application Closed Open
In. Hg In. Hg
Colt, Colt 200, Mirage
& Colt Wagon ................. 1.8 ................ 7.7
Colt Vista .................... 2.1 ................ 6.8
Eclipse ....................... 1.8 ................ 8.5
Galant ........................ 1.7 ................ 7.5
Pickup, Ram-50 ................ 1.2 ................ 9.4
Precis ........................ 1.0 ................ 3.3
Sigma ......................... 1.6 ................ 8.7

Van/Wagon ..................... 1.9 ................ 6.7








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EGR VALVE SPECIFICATIONS TABLE (1991 Models)








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Application Closed Open
In. Hg In. Hg
Colt, Colt 200,
Colt Vista,
Mirage & Summit ............ 2.1 ................ 6.8
Eclipse ....................... 1.8 ................ 8.5
Galant ........................ 1.7 ................ 7.5
Montero ....................... 2.4 ................ 6.7
Pickup, Ram-50 ................ 1.2 ................ 9.4
Precis ........................ 1.0 ................ 3.3
Stealth & 3000GT .............. 1.8 ................ 9.1









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EGR VALVE SPECIFICATIONS TABLE (1992-94 Models)








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Application Closed Open
In. Hg In. Hg
Colt, Colt 200,
Mirage & Summit ............. 2.1 ................ 6.8
Diamante, Stealth & 3000GT .... 1.8 ................ 9.1
Eclipse ....................... 1.8 ................ 8.5
Expo, Summit Wagon &
Vista Wagon .................. 1.6 ................ 7.9
Galant ........................ 1.7 ................ 7.5
Montero ....................... 2.4 ................ 6.7
Pickup, Ram-50 ................ 1.2 ................ 9.4
Precis ........................ 1.0 ................ 3.3









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ELE C TR IC AL C O M PO NEN T L O CATO R

1991 M it s u bis h i M onte ro
1991 CHRYSLER MOTORS & MITSUBISHI
ELECTRICAL COMPONENTS
Montero
BUZZERS, RELAYS & TIMERS









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Component Component Location








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A/C Relay Behind right side of dash, on
evaporator case.
A/C Power Relay On left front inner fender
panel.

Alternator Relay On left front of engine
compartment, behind headlight.
Condenser Fan Motor Relay On left inner fender panel.
Control Relay Behind right kick panel.

Defogger Timer Behind right side of dash.
Door Lock Control Relay On right side kick panel.

Hazard Flasher Relay Behind left side of dash,
above kick panel.
Headlight Control Relay On left front side of engine
compartment, behind headlight.

Headlight Washer Relay Behind left side of dash.
Heater Relay Behind center of dash, left of
heater box.
Intermittent Wiper Relay: