Engine Performance problem
1993 Plymouth Acclaim 4 cyl Front Wheel Drive Automatic 85368 miles
I have been working on a 93 Acclaim for a while now. It was bought off-lease by my gram back in 96, and it obviously hasn't been driven much since then. Since it sat for a while on a cruddy driveway, many things got rusted out, including the engine oil pan (2.5 VIN K, TBI), and the oil pan ended up with a pinhole in it, and losing all of it's oil, while driving one day. The engine was replaced, and ever since, the car has not been right at all. It seriously lacks power (I know 90 or however many HP ain't much, but this is BAD), burns through 10 gallons of gas in 160 miles on the highway alone, and it's just, well, like I said, not as it used to be before the engine was replaced. Now, I have gone through school to become a tech, even though I don't have a job as one at this point, so I understand the basics. I heard a while back, while attending school, that there is a shuttle valve in the throttle body that has a hand in controlling the fuel pressure in Chrysler TBI units. The tech involved was one of my instructors, and he had dealt with a similar problem on a New Yorker, I think it was, that already had the pressure regulator replaced TWICE and came back again for the same issue. I was thinking, that since this car is going to be gotten rid of anyways after I'm done driving it while replacing the fuel lines in my car, that this needs to be fixed as cheaply as possible, and the FPR is rather expensive. I'd rather get the engine running properly while I'm doing the brake work as opposed to having the car haunt the garage again when I should have just done everything at once in the first place.
Can anyone shed some light on the Chrysler TBI unit and how it controls fuel pressure?
have the same problem?
Sunday, December 7th, 2008 AT 8:51 PM