Service wrench light comes on and off

You are having trouble with the ecm. Have a scanner hooked up to test the ecm

ray365m most cars have a check engine light but yours has a extra good wrench light you need to have the engine scanned for codes possible crank or cam sensor problem? if that

You have a problem with the cataltst sensor problem.

replace the air and, fuel filters

Hello. this is a warning indicator. this light is on because there is either a problem with the engine control system, or even possiblity the abs unit. you will need to have the vehicle scanned for trouble codes to see why this light is coming on.

The SERVICE (Wrench) telltale is pulled to ground by the powertrain control module (PCM). When the lamp is pulled to ground, current from the ignition circuit flows through the indicator lamp, allowing it to come ON. The PCM will turn the SERVICE (Wrench) telltale ON for all non-emission related DTCs that require that a telltale be turned ON (some DTCs do not turn on a telltale but are stored to aid in diagnosis).
The SERVICE (Wrench) telltale will also be turned ON if the ABS control module has detected a fault in its own warning indicator system. If the ABS system cannot turn on its own telltale, a message will be sent to the PCM through the class 2 data bus (circuit 1807) to turn on the SERVICE (Wrench) telltale.
The SERVICE (Wrench) telltale will be turned ON for 2-3 seconds when the ignition is turned to RUN for a bulb test.

service engine light/ might have came on because of a fuel cap not being tight enough which sets a code for an EVAP leak

NEED TO SEE WHAT CODE IS IN THE PCM WHEN THE LIGHT COMES ON.MAY LEAD YOU IN THE RIGHT DIRECTION

sssounds like cat is clogged.

Some codes are HARD codes & some SOFT codes. The hard code are stored in the computer memory because "something was wrong and is wrong." A soft code is when an issue happened but vanishes.Sounds like you might have something soft.You'll need that scanner hooked up when that light comes on to check the specs of the car.

Hello Friend,
Pull out the spark pugs so, there is no longer compression. Put a wrench on the crankshaft pully. The engine will turn and the pistons will travel up and down. This is of course it the engine hasn't seized. If the engine turns its the starter. Simple.