Holden Captiva Engine Problems

Check the fuel pump and the turbocharger.

It needs to be fixed, it’s worth very little if you don’t repair it. There’s no reason to believe that you won’t get many more years out of it if you do have it repaired.

It is worth fixing, you will only have more trouble if you don’t. Cost depends on the engine. If it’s a V6 it could cost as much as $3000, a 4-cylinder less.

Never let things slide if you feel your car has a problem. Pursue a solution until you are satisfied you have the answer. It’s not a good idea to miss services, particularly on cars with turbochargers. Keeping a fresh supply of oil is the key to trouble-free motoring with turbos. There’s every chance the turbo was faulty when you first noticed it, and having missed a service you probably contributed to the failure. There’s probably not a lot you can do, except to pay for the repairs.

The cost including a new alternator should be $1000 to $1200.

The computer is getting a message that the engine is overheating. You have replaced the temperature sensor, so check the connections, and the wiring looking for a wire that might have shorted out.

The cap has a hex nut on it and you can unscrew it using a regular hex socket. It’s a regular right hand thread. If it’s really tight just go easy, don’t apply too much force.

It’s hard to diagnose from a distance. As the engine appears to be running ok, the noise and black smoke might well be a particulate filter burn-off event, but you wouldn’t normally expect to see smoke or hear what sounds like an explosion. The dealer can check the filter and the burn-off history, so they should be able to see if there has been an event. I would think the transmission problem is a separate issue, and the transmission might need servicing.

All of them would be good choices, but I would prefer the Mazda CX-5 or the Kia Sportage. Either would be fine.

Go back to the dealer and ask to see the results of the test, so you know what they are, and whether or not they reflect the results you get. The average you are measuring is crazily high if it's correct. It's not at all normal, which suggests there is a problem, possibly with the engine management system, which needs further investigation.