1994 MAZDA MX-5 low oil pressure

T INSTRUMENT CLUSTER 4. Set the SST to the resistance values shown in the figure. To get an accurate reading, wait 2 minutes after setting each value. 5. Verify that the gauge indicates the correct values. The al- \J lowable indication error is twice the width of the needle. 6. If not as specified, replace the oil pressure gauge. PRINTED CIRCUIT lnspection 1. Remove the instrument cluster. (Refer to page T-29.) 2. Check the printed circuit for damage or oxidization. 3. If necessary, replace the printed circuit. VEHICLE SPEED SENSOR lnspection 1. Remove the instrument cluster. 2. Connect an ohmmeter between terminals 2D and 2F. 3. Verify that the ohmmeter needle pulsates while rotating the speedometer cable shaft. ~ Pulsation: Ushaft rotation 4. If the correct number of pulsations fail to occur during each shaft rotation, replace the vehicle speed sensor. (Refer to page T-29.) WATER TEMPERATURE SENDER UNlT lnspection 1. Remove the sensor. 2. Place the sensor and a thermometer in water. 3. Heat the water gradually, and measure the resistance of the sensor with an ohmmeter. 4. If the resistance is not as specified, replace the sensor. Resistance: 190-260Q at 50°C (1 22°F) FUEL GAUGE SENDER UNlT (IN FUEL TANK) lnspection 1. Remove the fuel tank gauge sender unit. (Refer to section F.) 2. Disconnect the fuel gauge sender unit connector. 3. Check resistance between terminals A and B while slow- ly moving the unit arm from point F to point E. 4. If not correct, replace the fuel gauge sender unit. 2 Gartner Banana

TROUBLESHOOTING Case 1: Insufficient refrigerant Measured pressure Low-pressure side: 0.05-4.09 MPa (0.5--1.0 kgf/cm2, 8-1 4 psi) u High-pressure side: 0.69-498 MPa (7.0-1 0.0 kgflcm2, 100-142 psi) Condition Outlet air from vents not cold. Bubbles seen in sight glass. Step 1 1. Check for oil stains on the pipes, hoses and other parts. (Refer to illustration below.) 2. If oil staining is found at the connection of pipes or hoses, replace the O-ring; then evacuate, charge, and test the svstem. 3. If oil staining k not found, go to Step 2. Step 2 1. Check for leakage from the following connections with a gas leak tester. lnlet and outlet of condenser. lnlet and outlet of receiver drier. lnlet and outlet of A.C compressor. Sight glass. lnkt and outlet of cooling unit. 2. If leakage is evident, go to Step 3. 3. If leakage cannot be found, evacuate, charge, and test the system. (System OK, but refrigerant leaked gradually over time.) Step 3 L-/ 1. Check tightening torque of the connection where leak was detected. 2. If the connection is loose, tighten the connection to the specified torque; then evacuate, charge, and test system. 3. If the connection is properly tightened, replace the O-ring; then evacuate, charge, and test the system. Gartner Banana

TECHNICAL DATA D. LUBRICATION SYSTEM - Engine ltem BP DOHC - -. Lubrication system Force-fed type E. COOLING SYSTEM Trochoid gear 344-41 I3.5--4.5,s-31 9&l96 {I .&2.0, 15--28) 295-392 {3.0-4.0,43-56) 0.02-0.1 8 {0.000&0.0070) 0.20 {0.0079) 0.09-0.18 (0.0036-0.0070) 0.20 {0.0079) 0.03-0.1 2 {0.0012-0.0047) 0.14 (0.0055) TY pe Relief pressure kPa {kgf/cm2, psi) Oil pressure kPa {kgf/cm2, psi) Inner rotor tooth tip to outer rotor clearance mm {in) Outer rotor to body clearance mm {in) Side clearance mm {in) Water seal type I Unified mechanical seal Thermostat 1,000 rpm 3,000 rpm Standard Maximum Standard Maximum Standard Maximum Oil filter Engine ltem - - Cooling system . . Impeller diameter mm {in) Number of impeller blades Type Relief pressure differential kPa {kgf/cm2, psi) BP DOHC Water-cooled, forced circulation - 75 i2.95) 6 Full-flow, paper element 74-1 17 {0.&1.2, 12-1 7) TY pe . ., . . . - Radiator I Water pump Wax, two-stage v. . . Full-open temperature "c {OF) Full-open lift mm {in) Engine oil TVD~ O~enina tem~erature "C con I Sub: 83.5-86.5 U83-187). Main: 86.5-89.5 (1 88-1 931 100 (21 2) Sub: 1.5 (0.06) min., Main: 8.0 (0.31) min. -. . - . . Cooling circuit checking pressure kPa {kgflcmz, psi) I 103 {I .05, 14.9) I Centrifugal, V-ribbed belt driven TY pe I Coolant fan I 4.0 (4.2, 3.5) 3.6 {3.8,3.2) 3.75 (4.0, 3.3) API Service SG, SH (ECII) ILSAC Capacity Corrugated fin viscosity Above -25°C (-1 3°F) SAE 1 OW-30 number Below 0°C {3Z°F) SAE 5W-30 Total (dry engine) L {US qt, Imp qt) Oil replacement L {US qt, Imp qt) Oil and oil filter replacement L {US qt, Imp qtl Cap valve o~enina pressure kPa {krrf/cm2, psi} 1 73.6--102 {0.75--1.05, 10.7-14.91 Capacity W-V I 120-1 2 Current A 1 below 7.7 Engine oil Type Number of blades Outer diameter mm {in) Coolant Capacity L {US qt, Imp qt) I 6.0 {6.3,5.3) Electric 5 320 (1 2.61 Gartner Banana

TD TECHNICAL DATA Idle speed rpm 1 800-900 (850 2 50) [MT]', 750-850 (800 f 50) [ATJ' lanition timina BTDC I 9"-11' (10' f 1")' u' F. FUEL AND EMISSION CONTROL SYSTEMS - Engine ltem Item 1 Throat diameter mm {in) 1 55 (2.2) 1 Antifreeze solution BP DOHC Specification 1 Throttle body Fuel pump TY pe I Impeller (in-tank) Coolant protection Above -1 6°C (3°F) Above -26°C (-15°F) Above -40°C {-40°n Tv~e -. Output pressure kPa (kgf/cm2, psi) I 294-437 {3.0--6.5,43--92) Fuel filter Specific gravity at 20°C {WF) 1.054 1.066 1.078 Volume percentage % Horizontal draft Water 65 55 45 -. . - Regulating pressure kPa {kgf/cm2, psi) I 280-289 I2.85--2.95, 40.141.9) Fuel iniector Coolant 35 45 55 TY pe IAC valve Solenoid resistance n 1 10.7-1 2.3 (at 20°C (68°F)) Low-pressure side TYP~ Type of drive Resistance n Purge solenoid valve Solenoid resistance n 1 23-27 (at 20°C (68°F)) I Nylon element Pressure regulator TY pe High-ohmic Voltage 13.8 (at 20°C (68"FI) Engine coolant temperature sensor 7 20°C {68"F) I 2.21 -2.69 Resistance kn I 80°C (1 76OF} I 0.287-0.349 High-pressure side Diaphragm i/ Crankshaft position sensor Air valve Openin~l temperature OC {OF) I Below 45 (1 131 Paper element Twe 1 Fuel tank I Hall effect . . . . . . . Capacity L {US gal, Imp gal) I 48 {12.7, 10.5) Air cleaner housing Element type Free play mm (in) I 1-3 {0.039--0.118) I Fuel Oil permeated Specification Accelerator cable Unleaded regular (RON 87 or higher) J +....with system selector (49 B019 9AO) test switch at SELF TEST Gartner Banana

TECHNICAL DATA K. AUTOMATIC TRANSMISSION tem Transmission ;ear ratio NC4A-EL 4utomatic trans- nission fluid :ATF) 3il pump Drum support Direct clutch Forth gear plan- etary gear unit Front clutch Rear clutch Front planetary gear unit Rear planetary gear unit Low and reverse brake Oil distributor First Second Third Fourth Reverse TY pe Capacity L {US qt, Imp qt) Body clearance Standard mm {in) -Maximum Tip clearance Standard mm {in) Maximum Side clearance Standard mm {in) Maximum Seal ring and groove clear- Standard ance mm {in) Maximum Side plate clearance mm {in) Side plate size mm{in) End play mm {in) Bearing race size mm {in) Standard Pinion clearance mm {in) Maximum Total end play mm {in) Bearing race size mm (in) Retaining plate clearance mm {in) Retaining plate size mm {in) End play mm (in) Bearing race size mm {in) Retaining plate clearance mm {in) Retaining plate size mm {in) Total end play mm {in) Bearing race site mm {in) Standard Pinion clearance rnm {in) Maximum Standard Pinion clearance mm {in) Maximum Retaining plate clearance mm {in) Retaining plate size mm {in) Seal ring to groove Standard clearance mm {in) Maximum Valve spring specification 2.458 1.458 1 .OOO 0.720 2.1 82 ~exron~ll or M-Ill 7.3 {7.7, 6.4) 0.02-0.04 {0.000&0.0015) 0.08 (0.0031) 0.14--0.21 IO.0056--0.0082) 0.25 {0.0098) 0.05-0.20 {0.0020--0.0078) 0.25 {0.0098) 0.04-0.1 6 {0.0016--0.0062) - - 0.40 {0.0157) 0.2 {0.008) 0.4{0.016),0.6{0.024},0.8{0.031),1.0{0.039),1.2{0.047) 0.5-0.8 {0.020--0.031) 0.8 {0.031), 1 .O {0.039}, 1.2 (0.0471, 1.4 {0.055), 1.6 {0.063), 1.8 {0.071), 2.0 {0.079), 2.2 {0.087) 0.2-0.7 {0.008-0.028) 0.8 {0.031} 0.254.50 {0.0099-0.0196) 1.2 {0.047}, 1.4 (0.0551, 1.6 {0.063), 1.8 {0.071), 2.0 {0.079), 2.2 {0.087) 0.9-1.1 {0.036-4.043) 5.8 {0.228),6.0 (0.2361, 6.2 (0.2443, 6.4 (0.2521, 6.6 {0.260), 6.8 {0.268),7.0 {0.276) 0.5-4.8 {0.020-0.031) 0.8 {0.031), 1.0 {0.039), 1.2 {0.047), 1.4 {0.055}, 1.6 (0.063), 1.8 {0.071}, 2.0 (0.079), 2.2 (0.087) 0.-1 .O iO.032-0.039) 6.2 {O.244},6.4 {O.252}, 6.6 (0.2601, 6.8 (0.2681, 7.0 {0.276), 7.2 {0.283), 7.6 (0.299) 0.25-0.50 {0.0099--0.0196} 1.2 {0.047}, 1.4 {0.055), 1.6 {0.063), 1.8 {0.071), 2.0 {0.079}, 2.2 I0.087) 0.2-0.7 {0.008--0.027) 0.8 (0.031j 0.2-0.7 {0.00&0.027) 0.8 {0.031} 0.8-1.05 {0.031-0.041) 11.8 I0.4651, 12.0 {0.472}, 12.2 {0.480}, 12.4 {0.488}, 12.6 {0.496}, 12.8 (0.504) 0.04--0.16 (0.001 6--0.0062) 0.40 {0.0157) Control valve . . 11.7 (0.461) 7.4 (0,291 ) 10.0 (0.394) 7.5 (0.295) Pressure regulator 1-2 shift - 2-3 shift 3-4 shift Wire dia. mm fin) Outer dia. mm fin) . . 43.0 (1.693) 26.4 (1 .039) 50.0 (1.969) 40.2 (1.563) Free length mm (in of coils 13.0 9.6 13.7 15.0 -. 1.2 (0.047) 0.7 (0.026) 1 .O (0.039) 0.8 (0.031 ) Gartner Banana

TECHNICAL DATA Mode NOR- MAL 4 POWER - Transmission Item _5 Valve spring specification . , Throttle condition NC4A-EL Control valve Oil pump Drum support Band servo Wide open throttle Outer dia. mm {in) 9.2 (0.362) 6.7 {0.264) 9.0 (0.354) 7.4 (0.291) 8.5 (0.335) 5.5 (0.21 7) 5.0 (0.1971 9.4 (0.370) 11.2 i0.441) 8.9 (0.350) 9.3 (0.366) 6.5 (0.256) 5.5 {0.217) 16.0 (0.630) 27.7 {I .092) 28.25 (1.11 2) 8.0 (0.31 5) - 7.2 (0.283) Half throttle Direct, front, and rear clutches Low and reverse brake Parking rod Shift point (shift s~eed) Pressure modifier - - -- Closed throttle position Kickdown (Wide open throttle) Free length rnm {in) 19.8 (0.780) 17.5 (0.689) 17.5 (0.689) 14.5 (0.571) 21.3 (0.839) 39.5 {I .555) 15.5 {0.610} 19.5 (0.768) 62.0 (2.441) 82.5 (3.248) 43.4 {I .709) 26.8 11.055) 25.7 (1.012) 40.4 (1.591) 47.0 {I .850) 38.7 {I .52) 30.5 {I .20) 5.9-6.2 (0.2324.244) 32.0 {I .260) Throttle backup Wide open throttle Half throttle Small Large Closed throttle position No. of coils 5.3 7.4 5.2 5.0 7.3 24.4 12.0 5.0 21.3 29.7 22.0 14.0 16.5 9.8 14.0 5.4 14.5 - 14.0 N-R reducing Backup control 3-2 control Orifice check 1-2 reducing 1-2 accumulator N-W2-3 accumulator N-D accumulator Throttle relief (ball) Lockup control Fourth gear accumulator Fourth gear 2nd Kickdown (Wide open throttle) Wire dia. mm {in) 0.7 (0.028) 0.7 (0.028) 0.9 (0.035) 0.6 (0.024) 0.9 (0.035) 0.65 (0.026) 0.23 {0.009) 0.8 (0.031) 1.2 t0.047) 1.1 (0.043) 1.4 (0.055) 0.9 (0.035) 0.7 (0.028) 2.6 {0.102) 3.5 (0.1 38) 3.5 (0.1 38) 1.3 (0.051) - 0.7 (0.028) d Shift I D1-+D2 I D2+D3 D3 lockup ON D3+D4 b-+D2 - Vehicle speed kmlh (mph) 58-64 (36-39) 1 OQ108 (62-46) 9&106 (61-65) 152-1 62 (9%100) 3346 (21 -28) D2-*D3 '33434 D4 lockup ON D4-+b 0i-t~~ D2*D3 03 lockup ON D3-D4 58-76 (36-47) 82-1 1 0 (5 1-48} 74-1 00 (46--62) 28-34 (1 7-21 ) 44--55 {2&34) 90-1 08 (5666) 9&106 (61-65) 14-1 64 (87-1 01) Gartner Banana

TECHNICAL DATA --- M. FRONT AND REAR AXLES Specifications TY pe Bearing Angular ball bearing 0.05 10.002) Front axle Rear axle - Wheel bearing play mm {in) I Maximum Bearina Anaular ball bearina . .. Wheel bearina plav mm {in) I Maximum " " 0.05 {0.002) 'TORSEN" LSD I Standard TY pe Reduction aear Hvpoid sear Reduction ratio Differential aear 4.100 Worm near ("1ORSEN"LSD) I Straiaht-bevel gear - - Ring gear size mm {in) 1 Grade 182.88 17.201 API service GL-5 Oil 1 Viscosity Above -18°C {O°F): SAE 90 Below -18°C {O°F): SAE 80W Differential Capacity L {US at. Imp at) Locknut tightening torque: 128-284 N.m {I 3-29 kgf.m, 94.1-209.7 ft.lbf) Drive pinion preload (without oil seal) TORSEN" is a Backlash mm {in) . , egistered trademark of ZEXEL-GLEASON US, Side gear and pinion gear Final gear , INC Length (Pilot section to pilot section) mm (in N. STEERING SYSTEM Steering wheel Outer diameter mm {in} 1 370 11 4.6) Type item Free play mm {in) I 630 {O-1.18) Wheel effort N (kaf, Ibfl 14.9--29.4{0.5--3.0, 1.1-4.6) 123.545.3 12.A4.6,5.3--8.0) turns I 3.36 1 2.8 I 1 Manual steering Steering Shaft Shaft type I Collapsible, non-tilt Power steering Joint type I 2-cross joint Power steering system Gear ratio 1 m (infinite) Rack stroke rnm {in) I 121 .O 14.76) Power assist type Engine speed sensing Power steering fluid Fluid capacity L {US qt, Imp qt} Fluid pressure kPa {kgf/cm2, psi) Gear type - - ATF DexrongII oi M-111 0.8 {0.85,0.70) 7,603--8,339 (77.5850, 1 ,I 02-1,209) Rack-and-pinion Gartner Banana

TECHNICAL DATA R. SUSPENSION Front sus~ension I i/ Differential - . - ~- Coil springs MT I AT Shock absorbers "TORSEN" LSD TY ~a Cylindrical double-acting, low-pressure gas charged Standard Stabilizer Double-wishbone Torsion bar Wire diameter mm {in) Coil inner diameter mm {in} Rear suspension Tv~e I Double-wishbone TY pe Diameter mm {in) 20.0 (0.79) I Identification color 11 .O {0.43} 83.0 f3.27) . . Free length mm {in) Coil number 19.0 {0.75} . . 292.5 (1 1.52) 1 302.0 {I 1.89) 6.32 I - . I1 . ,I . , I Shock absorbers Cylindrical double-acting, low-pressure gas charged White I I Identification color I Yellow I Green I Blue Torsion bar 12.0 (0.471 1 11 .O 10.43) .a Stabilizer TYPe Diameter mm {in) Coil springs Wheel alignment I Front wheel alignment (Unladen'') I I - Caster angle*3 King pin angle I tun'aoen 'I 1 Camber angle'2 -0°43' 2 30' I I - Wire diameter mm {in) Coil inner diameter mm {in) Free length mm {in} Coil number Maximum steering angle 4O26' -c 45' 11 "20' Rear wheel alignment ,, l-l_A_-*i, *1 Fuel tank full; radiator coolant and engine oil at specified level, and spare tire, jack, and tools in designated position. *2 Difference between left and right must not exceed lo. *3 Difference between left and right must not exceed 1'30'. 10.1 (0.40) Inner Outer 10.2 I0.40) mm (in) Camber ana~e*~ J 3 + 3 10.12 r 0.12) 0°18' 2 18' -. - 3 r 3 {0.12 2 0.12) 0'24' 2 45' 37O23' 2 2" 32O32' 2 2" Total toe-in 83.0 i3.27) U' mm {in} degree 348.5 113.72) Total toe-in 356.5 {I 4.04) dearee 7.68 0'18' & 18' 7.96 Gartner Banana