20 Most Recent 1998 Pontiac Bonneville - Page 5 Questions & Answers

tear apart ducts and check for nesting issues-Denny

have a load test done on the battery for a dead cell.

alot of times I have typed cars make model,and year, then searched for fuse box diagram

did u ever figure it out I have the same problem.

The dash gauges are notoriously inaccurate. But it is possible that the thermostat is stuck open. Does the upper radiator hose get hot after engine warmed up? Also feel both heater hoses-when engine is warm, both should be hot-indicating the coolant is circulating through the heater core. If heater hoses are hot, and you still have cold air, the temperature blend door on the heater case may not be operating. Try a new thermostat and see if engine warms up faster and better.

could be anything from belt noise to lifter tick to rod knock..lifter tick is under the valve covers..rod knock sounds like hitting the block with a hammer..if its rod knock see what your oil pressure is.. should be around 30 to 45 psi cold..warm will be as low as 15..depending on oil type..most lifters can be adjusted by removing the cover and doing adjusting depending on the vehicle..good luck

yes your right

Check your transmission fluid level, add fluid if necessary or have the fluid and filter changed.

autozone will have that replacement hardware in the body aisle its usually some assorted bolts, and plastic clips''if the car needs moved to get there, may need to wire tie it up enough or remove entirely to go there(or any closer parts or body shop.

check the fuel pressure it could be a bad fuel pump,also check or replace the fuel filter if it has not been changed in a long time.another thing it could be is the maf sensor may be dirty or have a problem when cold.you will have to have a shop look at it to see if the readings are within spec.

Throttle body and attached linkage may need to be cleaned well.

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The IAC (idle air control) valve could be defective...often they go bad or stick and never set a fault code.

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first thing to check is the fuse under the dash drivers side

if you are saying the low pressure sw is not preventing it from comming on then you need to check tha actuall sw inthe dash and in the compressor.. ie the relay and all wireing connections

why dont you start with your problem,

Check the bulbs first, they get damaged very easily.