After discovering we bought a lemon we decided to make lemonade. Repairs that have been made: Spark Plugs (+Wires), Water Pump, Valve-Cover gasket, Head Gasket, Thermostat, Fan Motors, Flushed radiator.
Vehicle is still overheating after 1-2 hours of running, if we turn on heater it will postpone overheating for another hour.
While you have it at the radiator repair shop, have them flow test the radiator. They should have information on the flow of a new radiator and then you can compare the two. They should be able to tell you if your flow rate is high enough to do the job.
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Make sure car is cold. Use socket wrench and spark plug socket to remove old plugs. Add new plugs, and then put wires back.------------------------------------------------------------------------------------ Multi-Di@g Access
Make sure that the Plug Wires are going to the right Plug. make sure you have a good contect with the Plug and Plug wire. make sure that the Plug wire is in the Cap and the Cap is on right and clamped down.
how many miles were on the spark plugs? worn spark plugs can cause high stress in the coils because it takes a lot more energy to fire the spark plugs. But I think its a stretch to blame them for a control module going bad. I would have someone explain how that's possible. I can see 1 coil bad, (I don't know if that has individual coils or a coil pack) but all 6 and the module??
Oh, great...just bought a '95 626 for my daughter and we're going thru the same problems. Was told to replace valve cover gasket and plugs and wires. replaced filters and put in new oil and fluids. Also read somewhere it could be alternator issues.
the spark plugs wires are directly located on top of the engine and the spark plugs are down inside the holes in the valve cover itself. I believe there are also 2 coils on top of the engine, which hide two of the spark plug wires which are attached directly to the underside of each coil, remove the coil pull it upward carefully and you will find the spark plugs for those two in the hole underneath the coil for each one. If you decide to replace the plugs, make sure to check the spark plug gap even if they tell you they are pre-gapped as pre-gapped spark plugs are usually gapped for more than one particular car and it may be incorrectly gapped for your specific vehicle. If you decide to also replace the spark plug wires, you will have to purchase the spark plug wires for the underside of each coil seperately because most local auto parts stores only sell 2 spark plug wires in the set that go onto the non-coil attached wires and plugs, and you have to purchase the coil spark plug wires seperately. So all in all you should have 4 spark plug wires, 2 that attach directly underneath the 2 coils, then 2 regular type wires that run to the other spark plugs. If you look at the valve cover and see the wires, you will see what i am saying better. Just don't forget to ask the autoparts store the spark plug gap recommended for you car, and adjust the gap on the plugs as needed. good luck.