
1991 Pontiac Grand Prix LE 3.1L Excessive Emissions, Poor Idle Quality, Surge, Cuts out, MIL Lamp on
This car has been a problem for months. Sometimes won't idle. Now car is acting up all the [...] idle, up to TPS of .98 volts, car runs lean, o2 at o volts, iac counts to 198. Above TPS of .98 volts, it snaps right out of it, o2 comes back, iac counts down, bl...
FIX posted 3/2/2004
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)9 Replies Received(Hide Replies)9 Replies Received
|
Message Closed w/FIX
|
VIN | 1G2WH54T2M |
Engine | 3.1 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / EFI |
Emissions | US FED |
Symptoms | Excessive Emissions, Poor Idle Quality, Surge, Cuts Out, MIL Lamp On |
Occurs | Always, Idle, Intermittently |
Trouble Codes
31 | Map Sensor high |
44 | lean fuel |
Message Closed w/FIX
Vehicle Data
1991 Pontiac Grand Prix LE
VIN | 1G2WH54T2M |
Engine | 3.1 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / EFI |
Emissions | US FED |
Symptoms | Excessive Emissions, Poor Idle Quality, Surge, Cuts Out, MIL Lamp On |
Occurs | Always, Idle, Intermittently |
Trouble Codes
31 | Map Sensor high |
44 | lean fuel |