Access the turbocharger inlet (compressor) side by removing the air intake (MAF) hose. TURBO - The stock turbo is a Garrett AiResearch unit.The coil pack and ignition module are also subject to thermal decay, and most people prefer genuine AC Delco replacements for these and most electrical components. IGNITION - Examine the spark plug wires, since they tend to break down quickly from heat.Abnormal wear, fit, or missing clips in this area can reveal frequent EPROM changes. The ECM itself is located behind the kick panel on the passenger side foot well. Jumper across the diagnostic pins and the following should activate- low speed fan, SES light, IAC motor, wastegate solenoid. You will check for stored error codes again after your test drive. EPROM changes are very common in these cars, so ask the owner if the original is available. ECM - If you have access to a scan tool such as TurboLink (tm), check for stored error codes.These are caused by the body flexing from Buick torque! Rust is prevalent on the bottom of the passenger doors, in the bumpers, and under the rubber of the gas tank straps. On 2dr coupes, look for cracks or waves by the top of the pillars which separate the front doors from the rear windows. There was, in fact, an unofficial recall on late 80's GM paint jobs. Any paint that looks "too good" for it's age is suspect, since these cars had characteristically poor paint jobs from the factory. BODY- Stock paint is a lacquer type and the '87 cars had a thin clear coat over the color which could fog using certain waxes.Try to get to it first thing in the morning. When you first approach the car, you want it to be completely cold. Use your street sense as to whether they are being cautious, or just trying to hide something. Finally, the amount of tire-kicking the owner will allow may limit the usefulness of this list. We have tried to focus on topics which are of specific concern to the Turbo Regal, so don't rule out standard checks you would do with any car. The information presented here is based on a mostly stock car, as it would be impossible to anticipate all the modifications that could be present. This is a guide to assist you in purchasing a Buick Turbo Regal. The 1989 Pontiac 20th Anniversary Turbo Trans Am.John Wagner - Information for Buick Turbo Regals
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