probs after 3000 rpm

grandshervee

Member
:
Parent's Car.
hey there, so I just went to my local dealership and bought a yellow 2003.5 msp with the condition that I enjoy the test drive. The car handled great, but one weird thing was that if I let off the gas a little quick after 3000 rpm, lets say 4000, the car would shake like you are in first and are not giving enough gas to the car. In essence, the engine brake did not slow the car down gradually or smoothly, but very violently and jerky as if it were going to die from a lack of fuel. The main mechanic is going to look at it in the morning, but I am wondering if anyone else had this problem? Does it relate to fuel richness? I looked on the front passenger sidewall and couldn't find the sticker that says the ECU has been updated, will this do the trick?

Thanks a lot.

Shervin
 
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