This 2008 GMC Yukon came in with the complaint of reduced power and the vehicle could not be driven over about 35 mph. There were a lot of codes stored but the only one of real relevance was Code P0641 Symptom 00, 5 volt reference circuit 1. I looked at data under the TAC section … Continue reading “2008 GMC Yukon, Reduced Power Mode, Code P0641 00 Stored”
This 2007 Suzuki XL7 came in with the SES light on and an odd complaint that the engine would not restart after refueling. The customer stated that she had learned that if she depressed the gas pedal about 25% to 50% the engine would fire up and run. That solution would suggest a problem with … Continue reading “2007 Suzuki XL7, P0496 & Hard Restart After Fueling”
This 2001 Lincoln Continental came in with the complaint that the speedometer and the tachometer were not working. The mileage displayed dashes instead of digits. There were “Check Traction Control” and “Check Transmission” fault messages. The “Service Engine Soon” light was on and codes P0500, P1502, P1744 and U1039 were stored in the PCM. That … Continue reading “2001 Lincoln Continental, Speedometer and Tach Inop”
This 2008 Chevrolet Silverado came in with the complaint that the cruise control would not work. Since I have a Tech 2 scan tool I decided to look for codes first. There was a PCM code P0573 stored for the “Brake Switch Circuit 1 High Voltage”. Simply put the computers think that the brake lights … Continue reading “2008 Chevrolet Silverado, Cruise Control Does Not Work, P0573”
This 2004 Jeep Grand Cherokee came in with the complaint that the engine would buck and jerk and sometimes stall. There was a code P0122 stored and the TPS had already been replaced in an attempt to repair this vehicle. The customer stated that the oxygen sensors and the crank position sensors had also been … Continue reading “2004 Jeep Grand Cherokee , Code P0122 Set, Runs Poorly Sometimes”
This 2002 Ford Explorer came in with the complaint that the engine would run poorly or not at all. The customer stated that he was able to start the engine only after installing a new set of spark plugs. There were multiple codes stored in the PCM; P0113, P0123, P0453, P0708 and P1289. Some of … Continue reading “2002 Ford Explorer, No Run / Poor Run Condition”
This 2000 Cadillac Deville Came in with the complaint of running poorly and a code P0102 was present. The customer had already replaced the MAF (mass air flow) sensor and tried to replace the harness connector. Why anyone would consider this a repair is beyond me. Looking at MAF data, the grams per second and … Continue reading “2000 Cadillac DeVille, Runs Poorly Code P0102”
This 2002 Isuzu Rodeo with a 3.2 liter V6 engine came in with a flashing check engine light and a complaint of skipping. There was only a general misfire code P0300. I hate general misfire codes. I cleared the code and ran the vehicle under load to induce the misfire. After a few minutes the … Continue reading “2002 Isuzu Rodeo, P0302”
This 2006 GMC Yukon came in with the Service Engine Soon (SES) light on and a code P0449 stored in the PCM memory. This test should be done on the vehicle but I could not figure a way to o the test and position everything for a good picture. So you will just have to … Continue reading “2006 GMC Yukon, P0449”
This 2006 Pontiac G6 came in with the SES light on and code P0449 stored. There was also a symptom code of 00 present. The canister vent solenoid is located at the right rear of the fuel tank. On the top side. You can barely see the red connector with the blue retainer. Click on … Continue reading “2006 Pontiac G6, P0449”