1990 Geo Metro Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

17 Coolant / Antifreeze parts are listed for the 1990 Geo Metro, from PEAK, PRESTONE, FVP and 1 other brand. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 1 option from VALVOLINE — rated for severe service. VALVOLINE ZXG051 is listed in this group.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from PEAK, FVP and PRESTONE — built to original-equipment specification. FVP DEX5050GAL is listed in this group.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

2 Coolant Hose / Pipe parts are listed for the 1990 Geo Metro, from ACDELCO and GATES.

This group includes ACDELCO 14067S and GATES 18429.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Coolant Hose / Pipe Seal parts for the 1990 Geo Metro come from 2 brands — AJUSA and FEL-PRO.

This group includes AJUSA 16020200 and FEL-PRO 36102.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 1990 Geo Metro come from US MOTOR WORKS.

Part numbers include US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

This table covers the adapters used to pressure-test this cooling system. Read more

4 Cooling System Tester Adapter parts are listed for the 1990 Geo Metro, from MOTORAD, GATES and STANT.

Listed part numbers: GATES 31428, MOTORAD 3121 and MOTORAD 3122, plus the other parts above.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

8 Radiator parts are listed for the 1990 Geo Metro, from TECHPRO, SPECTRA PREMIUM, FVP and 2 other brands. LILAND GLOBAL 1182AA carries the "Popular" badge.

Economy: 2 parts, from TECHPRO. A representative part number is TECHPRO GM3010371.

In the Premium (All Aluminum Construction) grade, LILAND GLOBAL supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL 1182AA.

The Standard Replacement section: 5 options from SPECTRA PREMIUM, FVP and OSC. SPECTRA PREMIUM CU1444 is listed in this group.

This group includes LILAND GLOBAL 1182AA, TECHPRO GM3010371 and TECHPRO GM3010372 and the remaining parts above.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

6 Radiator Cap parts are listed for the 1990 Geo Metro, from GATES, MOTORAD, CALORSTAT and 1 other brand. MOTORAD T13R carries the "Popular" badge.

The Locking Replacement section lists 3 options from CALORSTAT, GATES and MOTORAD — grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. CALORSTAT RC0213 is listed in this group.

The Standard Replacement section: 3 options from MOTORAD, SKP and GATES. MOTORAD T13R is listed in this group.

This group includes MOTORAD T13R, CALORSTAT RC0213 and GATES 31533 and the remaining parts above.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: DORMAN 490235.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

2 Radiator Fan Assembly parts for the 1990 Geo Metro come from 2 brands — GPD and AGILITY.

The Economy section: 1 option from GPD. GPD 2811296 is listed in this group.

Standard Replacement: 1 part, from AGILITY. A representative part number is AGILITY 6016148.

Listed part numbers: GPD 2811296 and AGILITY 6016148.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

4 Radiator Fan Motor parts are listed for the 1990 Geo Metro, from ACDELCO, FOUR SEASONS, GPD and 1 other brand.

Part numbers include ACDELCO 1580408, FOUR SEASONS 35407 and GPD 2311272, among others listed above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

9 Radiator Hose parts for the 1990 Geo Metro come from 4 brands — GATES, DAYCO, ACDELCO and 1 other brand. The "Popular" part is DAYCO 71271.

The Economy section: 1 option from GATES. GATES 25157 is listed in this group.

Standard Replacement: 8 parts, from GATES, DAYCO, ACDELCO and 1 other brand. A representative part number is DAYCO 71271.

Listed part numbers: DAYCO 71271, GATES 25157 and DAYCO 70894, plus the other parts above.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

19 Temperature Sender / Sensor parts are listed for the 1990 Geo Metro, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, BECK/ARNLEY and 10 other brands. SKP SKTX18 carries the "Popular" badge.

Economy: 6 parts, from SKP, STANDARD MOTOR PRODUCTS, ÜRO PARTS and 3 other brands. A representative part number is SKP SKTX18.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191122.

The Standard Replacement section: 12 options from STANDARD MOTOR PRODUCTS, BECK/ARNLEY, FACET and 5 other brands. STANDARD MOTOR PRODUCTS TX18 is listed in this group.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

12 Thermostat parts for the 1990 Geo Metro come from 4 brands — MOTORAD, GATES, BECK/ARNLEY and 1 other brand. The "Popular" part is GATES 33429.

Heavy Duty: 1 part, from MOTORAD. A representative part number is MOTORAD 5203180.

The Performance section lists 1 option from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2003180 is listed in this group.

Premium: 2 parts, from MOTORAD. A representative part number is MOTORAD 7203180.

Standard Replacement: 8 parts, from MOTORAD, GATES, BECK/ARNLEY and 1 other brand. A representative part number is GATES 33429.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

11 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 1990 Geo Metro, from APEX, VICTOR REINZ, FEL-PRO and 6 other brands. FEL-PRO 35451 carries the "Popular" badge.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

7 Water Pump parts for the 1990 Geo Metro come from 7 brands — WJB / INMOTION PARTS, BECK/ARNLEY, FVP and 4 other brands. The "Popular" part is WJB / INMOTION PARTS WU5058.

The Economy section: 4 options from WJB / INMOTION PARTS, BECK/ARNLEY, FVP and 1 other brand. WJB / INMOTION PARTS WU5058 is listed in this group.

Standard Replacement: 3 parts, from AISIN, GATES and GMB. A representative part number is AISIN WPS007.

This group includes WJB / INMOTION PARTS WU5058, BECK/ARNLEY 1312147 and FVP US5058 and the remaining parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

4 Water Pump Gasket parts are listed for the 1990 Geo Metro, from APEX, BECK/ARNLEY, FEL-PRO and 1 other brand.

Listed part numbers: APEX AWP3070, BECK/ARNLEY 0394043 and FEL-PRO 35366, plus the other parts above.