overheat/service engine soon!

[HP]

Luis, it must be Sat, because all the real experts are out, so
I'll try to help you. First, run through the engine trouble
codes, write them down, and try to sort out the possibilities.
I don't have a manual around, so I'm pulling from memory.
Since the fan did eventually come on, it means that the main power circuit to the fan, and the fan relays are working. The power circuit to the fan is protected by a fusible link off the
jumper post, so the circuit is either good or bad(fan running
means in your case good) It is always worthwhile to
check that circuit where it comes off the + jumper post to see
if someone may have replaced the fusible link with a circuit
breaker(a visual check will locate a modification). You might
want to check your temp sending unit to see if it reads within
specs. Visually follow circuit to check for heat fatigue.
I don't have a reference on trouble codes, but that might narrow
down your choices. In lemp mode(trouble mode) the PCM will
activate relay for hi-speed fan. The trouble light can be
turned OFF by disconnecting Battery, or loosen nut on + jumper post and break main connection for a few seconds. But if engine
was in trouble mode, and your orig. problem is still present,
this would turn off hi-speed fan relay, and your overheating would return. It helps in overheating situations, to know whether fan was on or off, and also if fan was on hi-speed or
lo-speed(hi-speed feels like it could blow your spark-plug wires
off). The power circuit to the fan carries a heavy amp load
and this, not only stresses the wiring, but also the relays.

 

[kowalski vanishing point]

Check your oil and check your coolant level.
Just insurance.
The last time my Viper's temp went up inexplicably
the inexplicable became quite explicable
when I found most of the coolant mingling with the oil
courtesy of a defective timing chain cover gasket.

Not to say this is your problem
but a quick check could save you greater woes.

 

[Devin 97 Blue GTS]

Replace the fan relays on the driver side engine bay and install the Roe fan kit w/ emergency switch ( Had the same thing happen to me @ the beach replaced both relay w/ new style from the 2002 model) I also keep two spares under my spare tire