1985 Cadillac Fleetwood Brougham Low Fuel Pressure

This was not a particularly difficult problem but I thought it was interesting. Engine would die out on acceleration and felt like it was running out of fuel. Customer said it happened all of a sudden. Checked fuel pressure at service port located at rear of throttle body. Fuel pressure was at 5 – 6 … Continue reading “1985 Cadillac Fleetwood Brougham Low Fuel Pressure”

1993 Buick Roadmaster Power Trunk Release Inop

Car came in with complaint of power trunk release inop. Would not work with remote or switch on dash. The first thing checked was that the valet switch in the glove box was not switch on. It was not. Checked for power and ground at trunk release solenoid located at the latch assembly. No power … Continue reading “1993 Buick Roadmaster Power Trunk Release Inop”

2000 Cadillac Deville Erratic Compressor Operation

Cadillac Deville was sent to shop from another facility with complaint of a/c cycles off and will not come back on for several minutes and vent temperature goes warm. Checked codes and none were stored in the ECM, DIM or IPM. All data looked good and then the compressor cycled off after running at 2000 … Continue reading “2000 Cadillac Deville Erratic Compressor Operation”

2000 Cadillac Deville, Fuel Gauge Reads Full All Of The Time

Customer stated that fuel gauge always reads full but the trip computer is keeping track of fuel mileage and he has been using it to monitor fuel level. Checked codes and found codes stored for both fuel level signal voltage high and low. Consulted repair information and found little help. Wiring diagram shows signals from … Continue reading “2000 Cadillac Deville, Fuel Gauge Reads Full All Of The Time”

1999 Buick LeSabre, A/C Controls Blinks, Ticking Under Dash

This car came in with the complaint of the a/c control head was blinking and there was a ticking sound under the dash. Also the customer stated that the headlights go out when this happens. Luckily the symptoms were present along with others. The oil gauge would jump with the ticking sound and I noted … Continue reading “1999 Buick LeSabre, A/C Controls Blinks, Ticking Under Dash”

2000 Cadillac Deville, 4.6L, Surging Idle and Stalls

2000 Cadillac Deville with 4.6L engine was sent to my shop for surging idle. The engine has been changed. The IAC valve, TPS and MAP have been replaced with oem parts. The IAC valve harness connector did have the terminals spread and there was poor contact between harness connector and IAC valve. Replaced the connector … Continue reading “2000 Cadillac Deville, 4.6L, Surging Idle and Stalls”

2001 Chevrolet Cavalier Headlights Inop

2001 Chevrolet Cavalier came in the shop with no headlights. The service vehicle light is on and the DRL relay clicks several times when placed in gear with engine running. Checked power and ground at headlight bulb (required assembly removal). No switching grounds from dimmer switch. Located badly damaged harness connector under the battery tray. … Continue reading “2001 Chevrolet Cavalier Headlights Inop”