16th Jun 2011, 21:12

I was given a 2000 Mitsubishi Diamante LS. I like the car, but it does have similar issues like all other Diamante's on this site. This car has over 250,000 miles. I've only had this car for two months.

When I first was given the car, it wasn't working. It was found to be something wrong with the throttle and the "solenoid". Both were replaced. Then something was wrong with the valve cover, and it took a long time to replace. Finding one was difficult, as these cars are very hard to find. And now the TCL light is on.

At first it was on and off, and now it's just on. A few weeks later, the service engine light is on. The TCL and service lights are on constantly. At times, the service light would go on and off. We took the car to the shop, and the service light was reset. They figured by resetting, it would prevent it from coming back on. But it is still on. They also said resetting it would refresh and "pin point" or detect the problem.

Once they put it on the diagnostic machine, one mechanic says that it was a "faulty" TCL switch, which is triggering the service engine light. I'm like, "Really. This little switch (from inside the car) is causing the TCL light to display?" I didn't believe it.

Another mechanic also said that the catalytic converter needs to be replaced, and that something else can be triggering the service engine light, but according to the diagnostic, it's the TCL switch and catalytic converter (pre-cut). It's unclear as to what is wrong.

Is there anything else that can cause the TCL light and service engine light to come one? Is there something the mechanics should be looking for? We just found out that it won't pass smog because that service engine light is on.

These questions are directed to the person with the manual, and for any other person who may know.

I am dependent upon this vehicle, and can't afford to buy another; that's why it was given to me. I have invested time and money into getting the problem solved and fixed. I need to know what can be done before another problem starts. I don't live near any other modes of transportation. Having a car is a must!

I await your response...

Thanks.

14th Apr 2012, 16:58

I have a similar problem, the "service engine soon" light comes on intermittent. Should I be concerned?