Question about 1989 Pontiac Grand Prix

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Car wont start in the rain

My 89 Grand Prix wont start whenever it rains. The ignition gets wet and it wont start until it dries, (sometimes for days.) IS it a leak or does it need a new ignition?

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Hi, your disributer cap must be letting moisture in or it has a hair crack.
REplace it with a new one & also spray some sort of water repellent (WD40) onto the new cap inside & out.
Also smear some grease around the rim of the cap to stop mositure getting in.
This cured a VW that plagued us every time their was either rain or fog.
Also check you rotor arm as well for hair cracks or just replace it with a new one.

Posted on Dec 11, 2008

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I had a similar problem with starting the car. My ignition Switch was somewhat broken. The key to switch connection became compromised inside the switch on the steering column and it wouldn't turn. My mechanic put a button ignition switch under the dash. No more problems. Also If the firewall gets wet it can cause a short in the ignition and it wont start until it dries. Always check the integrity of your gaskets. especially the gaskets on the firewalland around the windshield wiper base on the driver side! Good Luck! Ree.

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