Rick's Free Auto Repair Advice

Posts Tagged: Blazer

Fan clutch issues Rainier Trailblazer S10 Ascender Bravada 9-7X S15 Envoy

Fix Fan clutch issues Rainier Trailblazer S10 Ascender Bravada 9-7X S15 Envoy If you encounter Electronic Fan clutch issues on Rainier, Trailblazer, S10, Isuzu Ascender, Oldmobile Bravada, Saab 9-7X, and S15 GMC Envoy, read this. The electronic fan clutch in the above vehicles experiences almost a 100% failure rate. The purpose of the fan is to reduce drag on the engine at highway speeds where “ram-air” is enough to cool the radiator. At highway speeds, a fully engaged clutch actually spins slower than the air coming through the radiator. So it … Read More

Hesitation and surging on Blazer 4.3L

Fix Hesitation and surging on Blazer 4.3L If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right. But before you start replacing really expensive components like the fuel pump, try this: Disconnect the electrical connector to the MAF sensor and take it for a drive. If you notice an improvement, try cleaning the MAF with CRC MAF sensor cleaner. Shops are reporting that a MAF sensor replacement is far more … Read More

P0300 misfires on GM 4.3 Engines with Distributors

Fix P0300 misfires on GM 4.3 Engines with Distributors Worn distributor teeth can be one of the causes of P0300 misfires on GM 4.3 Engines with Distributors. If you have a high mileage vehicle with this engine and have changed the plugs and wires, it may be time to pull the distributor to check the teeth. Worn teeth are either razor sharp or worn down. Replace with a rebuilt distributor. You will have to retime the engine and may have to cut a notch into the hold-down bracket to get … Read More


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