I have a 93 dodge dakota sport single cab pickup 200,000 miles.

I have 3 questions

1.) When im driving, ill let off the gas a little and my exhaust will make this wierd "clunk ping tang" noise. Like its rattleing around. But i checked all the bushings, connectors, etc and everything seems to be snug. Any thoughts on this one?????

2.) My truck dosent have a/c but it does have heat. The problem just started recently. The heat barely blows out of the vents at all, unless im going really fast. Is this a fan problem or what. Im guessing that because im going fast its pushing heat out.

3.) I was also looking on other poasts about the seafoam additive, but none of them were really clear on how to use it. i looked on their website and it says "with engine warm, add to the throttle body" .... do u have ur engine ON while ur adding it, or just warm and off until you start it 5 min later.

Thanks for your help!!

-ed-

 

the clunk ping might be backfire in your cat or muffler..kind of hard to tell where since i can't be there. the blower motor could be bad on it. or theres a rectangle plug on the passenger side of the truck on the firewall it could have corrosin in it and not making contact. (had that happen on mine) never used the seafoam.

 

2.) Like dodgedakotacrazy said, it could be the blower motor resistor block. This is addressed in the FAQs section (link). The resistor block is about $10 from the dealer or auto parts store, and is most of the time the reason for the blower not working properly.
3.) Yes, with the engine running and warm, you just pour in 1/3 to 1/2 a bottle of it in thru the throttle body (or, you can also take the brake booster vacuum line off and pour in thru that). Than, turn the engine off. Let the engine sit for about 5 minutes, and than restart the engine and the more "smoke" it puts out, the dirtier your engine was.