Join Date: Dec 2009
Location: Chico, California
3.8 Problems - Please Help
My car develops bad hesitation and shuddering under acceleration after the car warms up, it gets worse and leads to bad idle at stoplights. Most of the engine sensors are new, along with a new fuel filter, and a new exhaust with new cats. Im pulling codes 21 and 74, though cleaning the connection on the ECT sensor made 21 go away. I'm wondering about my fuel pressure, but also about my thermostat. I'm going to change out my thermostat tomorrow because I'm thinking that it might be overheating and causing my fuel mixture to lean out and slightly vapor lock. The other alternative is a fuel pressure regulator, which is why I'm going to check my fuel pressure tomorrow. Any other ideas?
What else could be causing this problem? I am deathly afraid of melting my new cats.
There was a 95 3.8L Taurus wagon that came into my work a while ago that was throwing similar codes and having similar problem, ended up the computer was fried. Could that be a possibility with my car?
[-----[ Conner ]-----] ASE P2 Automobile Parts Specialist - P4 General Motors Parts Consultant
The Blunderbird - 1989 Ford Thunderbird
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