Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE1985DELTA 88 V6-231 3.8LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCONTROL MODULE HVACADJUSTMENTSTEMPMATIC CLIMATE CONTROL SYSTEM DIAGNOSIS
1985 Oldsmobile Delta 88 V6-231 3.8L
Tempmatic Climate Control System Diagnosis
1985 Oldsmobile Delta 88 V6-231 3.8LSECTION Tempmatic Climate Control System Diagnosis
Control Lever Adjustment:
PROGRAMMER ADJUSTMENT
1. Open/remove I.P. compartment to gain access to programmer.
2. Start engine and operate until choke is open and off fast idle speed cam. Engine vacuum source or equivalent must be connected to engine vacuum port of vacuum checking relay during entire adjustment procedure.
3. Set A/C control mode lever to MAX position.
4. Move A/C control temperature lever until left end of programmer vacuum motor link is observed, through open I.P. compartment, to be even with the left edge of the programmer's cut-out area "A".
5. Hold programmer control lever with hand at "B" to prevent movement during Step 6.
6. Insert a standard flat-bladed screwdriver into the programmer control lever adjusting slot "C" and rotate to move the vacuum motor link as follows:
a. Rotating the screwdriver counterclockwise will raise the front seat temperature to the A/C control temperature lever reference setting. See Step (c) below.
b. Rotating the screwdriver clockwise will lower the front seat temperature to the A/C control temperature lever reference setting. See Step (c) below.
c. A 1/4" movement of the left end ("D") of the motor link (as set up in Step 4) will result in bringing the front seat center area temperature about three (3) degrees closer to the A/C control temperature lever reference setting.
NOTE: A 1/2" movement results in about six (6) degrees change. (A movement more than 1/2" produces varying change.)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.