1995 Pontiac Bonneville Fuel Problem?

Tiny
CKLEEDOM
  • MEMBER
  • 1995 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 133,000 MILES
When I'm driving the car it acts like it's not getting enough fuel. When I come to a stop the voltage and oil pressure guages bogg down as the engine wants to stall. When it actually stalls it gets harder to start so I'll wait a while before trying to do it again. My guess is that it may need a new crank positioning sensor. I have read others having the same problem.
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Friday, January 16th, 2009 AT 10:37 PM

6 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
Hello,

Does it feel like that from start up or does it drive fine for a while before acting up? If it drives fine for a while before acting up it could be the fuel filter.

My experience with Crank Sensor is that when they heat up the engine just dies. And if you let it cool down it will drive fine till it heats up again.

One question. Is your Check Engine Light On? If so and you can go by your local auto zone or parts store and have them pull codes for you and post them here.

.
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Friday, January 16th, 2009 AT 10:57 PM
Tiny
CKLEEDOM
  • MEMBER
The check engine light comes on the first time it's started but them I turn the engine off and back on again and it goes out. Yes, it drives fine from the start for about 5-10 miles, but the acts like it's going to stall at stops and sputters when going 30-70 mph.
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Friday, January 16th, 2009 AT 11:03 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
OK, lets see about pulling the codes.....

Here's how.....

To extract a trouble from the computer for diagnostic purposes, the Assembly Line Communication Link (ALDL) connector is used.

Ground terminals A and B with the ignition "ON" and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a 12, three consecutive times, by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" or light. A 12 consists of one flash, a short pause, then two flashes in rapid succession.

After 12 is displayed, any stored trouble s will be displayed by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" light. All s are displayed 3 times each then a 12 will repeat. In the diagnostic mode, the computer will also energize all computer controlled relays and solenoids.


http://www.2carpros.com/forum/automotive_pictures/188069_95bonnevillealdl_connector_1.gif



The ALDL diagnostic connector is located in the passenger compartment under dash.

Here are some codes...

13 Open Oxygen Sensor Circuit
14 Coolant Temperature Sensor (High Temp Indicated)
15 Coolant Temperature Sensor (Low Temp Indicated)
16 System Voltage Low
17 Camshaft Position Sensor Circuit Error
21 Throttle Position Sensor (Signal Voltage High)
22 Throttle Position Sensor (Signal Voltage Low)
23 Intake Air Temperature (IAT) Sensor Circuit
24 Vehicle Speed Sensor (VSS) Circuit
25 Intake Air Temp (IAT) Sensor (High Temp Indicated)
26 Quad Driver Fault
28 Transaxle Range Switch Error
33 MAP Sensor Circuit (Signal Voltage High
34 Mass Air Flow Sensor (MAF) Circuit
35 Idle Air Control (IAC) System
36 Ignition 24X Signal Circuit Error
37 TCC Brake Switch Error
41 Ignition Control (IC) Timing Circuit Error
42 Ignition Control (IC) Circuit
43 Knock Sensor (KS) Circuit
44 Oxygen Sensor Circuit (Lean Exhaust Indicated)
45 Oxygen Sensor Circuit (Rich Exhaust Indicated)
51 Mem-Cal Error
53 System Voltage High
54 Fuel Pump Circuit (Low Voltage)
58 Transmission Temperature Sensor Circuit (High Temp)
59 Trans Fluid Temp (TFT) Sensor (High Voltage/Low Temp)
66 Low A/C Refrigerant Charge
70 A/C Pressure Sensor (High) Circuit
72 Vehicle Speed Sensor (VSS) Circuit
75 Digital EGR #1 Solenoid Error
76 Digital EGR #2 Solenoid Error
77 Digital EGR #3 Solenoid Error
79 Transmission Fluid - Over Temperature
80 Transmission Component Slipping
82 Ignition Control 3X Signal Error
85 PROM Error
86 Analog/Digital (A/D) Error
87 Erasable Programmable Read Only Memory (EEPROM) Error
90 TCC Error
96 Transmission System Voltage Low
98 Invalid PCM Program
99 Invalid PCM Program

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Friday, January 16th, 2009 AT 11:33 PM
Tiny
CKLEEDOM
  • MEMBER
The check engine light, I was told my the guy I bought the car from was faulty. He told me all I had to do was turn the car off and then on again and it goes off. I'm thinking that it has to do with the engine starving for fuel. Sputtering while driving and stalling when it comes to a stop. Although, the check guages light comes on when it starts to sputter bad, or even before it stalls.
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Friday, January 16th, 2009 AT 11:47 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
Ok, if the engine light is faulty then it is possible there are codes, and pulling the codes can pinpoint the exact problem.

When was the last time you changed the fuel filter? If it has been a while and you want to change it and see what happens, I believe it is located under the car either up near the driver wheel or near the gas tank. it looks like this......


http://www.2carpros.com/forum/automotive_pictures/188069_95bonnevillefuelfilter_1.jpg


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Saturday, January 17th, 2009 AT 9:12 AM
Tiny
CKLEEDOM
  • MEMBER
I changed the fuel filter and out of suspicion had the battery checked. The battery had 3 dead cells in it so I replaced it with a new one. Car ran fine for about 10 miles then when I pulled inyo my driveway it acted like it was going to stall. Fed it a little gas and ran fine. Let it run for about 1/2 hour in my garage and it acted like it was going to stall in park a few more times. So, the fuel filter has been replaced. Maybe a major tune up is needed, although the engine is sound.
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Sunday, January 18th, 2009 AT 6:13 PM

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