Check List

Here is a list of items to look for when servicing one of these cars:

Under the front hood:

- Check coolant recovery tank. A low level may indicate a problem.

- Check hose clamps for tightness.

- Check hoses to be sure they are pliable. A hard, brittle or damaged hose should be replaced.

- Check the coolant fan and fan relay. There should be no interference between the fan and fan shroud. The fan relay controls coolant fan operation to maintain proper coolant temperature and a malfunction could allow the engine to overheat. If the car has air conditioning, the fan will run whenever the air conditioning is turned on.

In the engine compartment:

- Check heater and coolant hose clamps for tightness.

- Check the condition of all heater and coolant hoses.
Once again, damaged hoses should be replaced.

- Check for oil leaks at the valve cover. If it is removed for service do not reseal with RTV, use gasket # 10101791 (Dealer Service Bulletin 89-6-62).

- Check the PCV grommet, valve and hose, the breather hose and its grommet. An oil leak here can get on the manifold and is a potential hazard. If any parts are defective, they should be replaced.

- Check the automatic transmission dipstick for leaks. This could be caused by a plugged vent.

- Check the hose splices between the two metal transmission fluid cooling lines for tightness and leaks.

Figure 1 - Heat Shield Locations:

- Check the heat shields to be sure they are tight and in good shape. (Refer to Figure 1 for locations.)

Figure 2A - Engine Wiring - Rear View:

Figure 2B - Engine Wiring - Front:

Figure 2C - Engine Wiring Rear View:

- Check the electrical system to be sure all harnesses are secured where they are supposed to be so they don't rub on sharp edges or touch the manifold. (Refer to Figure 2 A, B and C for proper routing.)

Figure 3:

- Check to be sure all spark plug wires are routed correctly, are in their retaining clips and don't touch the manifold. (Refer to Figure 3 for proper routing).
- If the cylinder head is removed, be sure to retorque properly. Use new cylinder head bolts and tighten them in the correct sequence as shown in the 1986 Fiero service manual. Use a torque angle meter such as Kent-Moore tool J-36660.

Head Bolt Position GM Part Number

1-8 10044566
9 10044568
10 10044570