1999 Lincoln Town Car Engine Stalling

Tiny
TACARTER13413
  • MEMBER
  • 1999 LINCOLN TOWN CAR
1999 Lincoln Town Car 4 cyl Automatic 140000 miles

During acceleration the engine stalls in between 35 and 40 mph. In order to regain power I have to pull over and come to a complete stop and then I will be able to accelerate again. (The car never has to be turned off to be able to accelerate again) It has been doing this frequently and sometimes it will accelerate fine. Getting up a hill is also a problem. The engine turns over just fine no out of place noises. Before this started happening the A/C compressor was replaced. The CEL was on and a diagnostic test was ran and found problems with the catalytic converter and the spark plugs. Both catalytic converters were replaced and 4 of the 8 spark plugs were replaced. The remaining 4 spark plugs had been replaced in the last 2 years. A second diagnostic test was done and the error code T0603 showed up. A third diagnostic test was done but no error codes showed up. The third test also did not finish for some reason unknown. Any ideas?
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Tuesday, January 6th, 2009 AT 8:48 AM

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Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
That code is for a PCM test error. If it wont communicate and had that code previously, it may need to be flashed or replaced. Either way, you wil need to take it to a shop with the necessary software to do either of theses things
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Thursday, January 8th, 2009 AT 10:59 AM

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