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90-25-12 Vacuum Cruise

From 1983 Ford Bronco “That dirty old truck” — documented by Steve83.

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1983 Ford Bronco - TSB 90-25-12 Vacuum Cruise System Diagnostics ISSUE: Integrated Vehicle Speed Control (IVSC) was introduced on some 1986 units. The IVSC sy… 1983 Ford Bronco - "TRICKS OF THE TRADE" Many speed control concerns can be easily resolved by using the following "Tricks of the Trade" diagnostics. If a con… 1983 Ford Bronco - VOLTAGE/RESISTANCE TESTS If a concern cannot be found with a visual inspection, it can usually be found with an inspection. It can usually… 1983 Ford Bronco - VOLTAGE MEASUREMENTS Connect the negative lead of the voltmeter to circuit 57 (ground) of the Stand Alone Amplifier 6 way connector, or to… 1983 Ford Bronco - RESISTANCE MEASUREMENTS Connect an ohmmeter between the designed circuits and make the following resistance measurements with the ignition… 1983 Ford Bronco - ABNORMAL OPERATION DURING "ACCEL" OR "COAST" In 1986-88 models, the vehicle may exhibit hesitation while using the COAST mode, or hesitatio… 1983 Ford Bronco - SPECIFIC CARLINE SYMPTOMS AND CORRECTIVE ACTIONS The following charts are a summary of speed control concern symptoms as reported. The corr… 1983 Ford Bronco - SPECIFIC CARLINE SYMPTOMS AND CORRECTIVE ACTIONS The following charts are a summary of speed control concern symptoms as reported. The corr… 1983 Ford Bronco - SPECIFIC CARLINE SYMPTOMS AND CORRECTIVE ACTIONS The following charts are a summary of speed control concern symptoms as reported. The corr… 1983 Ford Bronco - SPECIFIC CARLINE SYMPTOMS AND CORRECTIVE ACTIONS The following charts are a summary of speed control concern symptoms as reported. The corr… 1983 Ford Bronco - SPECIFIC CARLINE SYMPTOMS AND CORRECTIVE ACTIONS The following charts are a summary of speed control concern symptoms as reported. The corr…