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1988 Buick Regal - Page 7 Questions & Answers
Speedometer needle bounce when turn signal is on.
The speedometer sensor - VSS - vehicle speed sensor is a input to the PCM - powertrain control module -engine computer . The signal from the PCM to the instrument cluster for speed info. is sent on a serial data communication network (class 2 ) I would think it would be an instrument cluster problem . Get a used one from a auto salvage yard 15 - 20 bucks an see if it fixes it . If it does ,send your's out an have it repaired .
My 98 Regal keep blowing the ignition fuse
Is it the 30A MaxiFuse marked IGN 1 or the 60A MaxiFuse marked IGN 2 from the underhood fuse block that blows, or a different fuse? Maybe the 10A IGN 0 fuse in the fuse block?
Anti-lock and trac-off lights
It could be a loose wire under the hood or dash. Was there any smell associated with the pop-hiss? It sounds like there was a short in the main power somewhere that literally killed your engine and then let it restart under it's own momentum. Hence the blackout and reset of the main computer.
I have a 1996 Buick
Looking at tne diagrams, which you can find at the link below, I recommend you check the switch. The front and back lights are powerd by separate circuits emanating from the switch. You can see this from reviewing the fisrt three links that come up under exterior lighting.
http://www.bbbind.com/free_tsb.html
2000 buick regal. Losing fuel pump voltage
http://www.bbbind.com/free_tsb.html free wiring diagrams ! Enter vehicle info. year , make , model an engine size . Under system click on engine ,then under subsystem click on fuel controls . Then click the search button , then click blue link .The 7th diagram down shows two fuel pump relays , This I have not seen before ! One is speed cont. relay an the other is just fuel pump relay ? The speed control one has a resistor in the electrical circuit . That is way your droping voltage .
Fuel Pump Electrical Circuit Diagnosis (VIN K)
Fuel Pump Electrical Circuit Diagnosis (VIN 1)
The PCM alters fuel pump speed by energizing the fuel pump speed control relay. Under normal conditions, the fuel pump speed control relay is energized. The applied voltage to the fuel pump is controlled by a resistor assembly. When higher fuel volume is required due to increased engine load, MAP sensor value over 90 kPa the PCM de-energizes the fuel pump speed control relay circuit. The increased voltage to the in-tank fuel pump allows a higher volume of fuel to be delivered to the fuel rail. The PCM also compensates for low system voltage by energizing the fuel pump speed control relay.
Have it check for codes !
Did DTC P0230 or DTC 1260 set?
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Go to DTC P0230 Fuel Pump Relay Control Circuit or DTC P1260 Fuel Pump Speed Relay Control Circuit
Go to Step 3
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