I've cobbled together some of my previous answers to get you started:
NO START but cranks
1st- check for good spark at the plugs. I use an old plug, clamp it to a good ground w/the plug wire attached.
2nd- if weak at step 1, try a jumper wire from coil output to a gap [such as the same test plug], if weak spark, verify full 12V at coil, if voltage present, replace coil. If not 12V, follow wiring diagram back, may have bad ballast resistor. If coil spark good, check cap/rotor for corrosion & check plug wires for less than 3,000 ohms of resistance per foot of wire. If this is a points ignition it may be due for points & condensor.
3rd- if spark appears okay then check for fuel &/or verify fuel pressure & volume. Check injector spray pattern. Check air filter. Dump a can of Dry-Gas in the tank, it may have moisture problems.
If possible check starter draw, it may be pulling too much current so there is not enough left for everything else.
Keep the battery charged while you work so you do not induce a phantom problem by running the battery low by too much cranking.
Be patient & work methodically! A Volt Ohm Meter can be your best friend.
Possibly the battery in your keyless entry fob might be low, perhaps the weak signal is causing security system malfunction.
If still NG: Next, be absolutely certain that your battery connections, at both ends, are good. Buy a terminal cleaning tool. Replace any suspect connectors. Watch the battery terminal itself, if acid is leaking around it or it moves, replace the battery. Borrow a known good battery if possible.
If still NG: disconnect battery ground and then pull the large computer connector. If it is blade style use a pencil eraser to clean the contacts. The computer is usually near the glovebox, a Haynes or Clymer manual will help. Reconnect everything in reverse order.
Also, push all relays firmly into their sockets, if the problem is occurring, try tapping on each relay with a screwdriver handle, sometimes they stick. If tapping a particular relay resolves problem, replace.
Check the steering column switch, which is located at the bottom of the column, inside the car and operated by a rod coming from the key turn.
· 1 decade ago