Saturn vue 2002 engine shaking when idle
Went to start 2002 saturn vue manual 4cylinder today. Didn't turn over on first attempt to start vehicle but did on the second try. It immediately started shaking and the service engine soon light started to flash. Popped the hood and nothing was noticeably wrong with anything other than the pretty unusual shaking of the engine. Also, there is a noticeable smell when you step out of the car. Took it to auto shop for a diagnostic and it read as an engine misfire. No other codes. I've gather from many various forums information about possible need for new spark plugs and/or an ignition control module. My concern is that If that is the case I have also read that continuing driving this way will cause damage to the catalytic converter however the guy at auto shop said its most likely just a need for new wires and to actually drive on it more. I am curious if anyone has any other suggestions for what this might be and advise on how, where, and how much money to fix this. Added info on vehicle 146k miles Bad left strut Possible wiring problems causing headlights to dim or not work.
Cars & Trucks - Saturn - Vue
Answers & Comments
The problem can one of many conditions: If prior to the initial problem mentioned, the car ran smooth, you may have a problem with the wires leading to the plugs. They age and get brittle, insulation cracks, connectors get loose or corroded. This leads to misfire and poor timing intervals. Engine misfires also occur when the timing is advanced or decline, timing belt loose or damaged, or electronic brain needs a reset. If you checked the plugs and they are gapped properly and clean; tight in the engine block, and top connector clean; then rule out the plugs. 146K is not a lot of time on that engine, but routine maintenance is your best bet to avoid costly bills down the line. As for the cost to repair....no way to know without a diagnostic workup.
Continuing to drive with a misfire will shorten the life of the cat. converter,burn more fuel, loss of power, and can lead to other more costly repairs. Best recommendation is to 1st, replace plugs and wires, clear codes and recheck. Recommend O.E. Delco parts, depending on where you go, parts and labor would be around $150-$250.