my '96 nissan pickup started running hot and I was not losing fliud. The fan comes on, the oil is not milky so I changed the thermostat. The first day I drove it and ran it for a total of 25 minutes. Temp was fine. Second day drove for 10 minutes and ran hot. Drained and flushed radiator ran hot again after 10 minutes. After it cooled, I did have some water loss. Could this be the water pump or could I have screwed the thermostat installation up?

Asked by Davey__13 Jun 20, 2015 at 04:03 PM about the 1996 Nissan Truck STD Standard Cab SB

Question type: Maintenance & Repair

my '96 nissan pickup started running hot and I was not losing fliud. The fan comes on,
the oil is not milky so I changed the thermostat. The first day I drove it and ran it for a
total of 25 minutes. Temp was fine. Second day drove for 10 minutes and ran hot.
Drained and flushed radiator ran hot again after 10 minutes. After it cooled, I did have
some water loss. Could this be the water pump or could I have screwed the thermostat
installation up?

14 Answers

53,050

Just to make sure it's not the thermostat remove t - stat put hose back on vehicle and let run to see if it still run hot. If not you have a bad thermostat but if still runs hot try spraying your radiator fins with a garden hose and nozzle better yet a pressure washer. Fins on radiator and if you have A.C condenser coil can be clogged with dirt and bugs causing low or no air flow across radiator and A.C condenser coil.

53,050

You also said you have a little water loss can you tell were it is coming from ?

I figured 'boiling out'..idk. It did not start running hot until after I ran the a/c for a few minutes

53,050

Is your A.C condenser coil in front of or behind your radiator ?

1 people found this helpful.
385

I would also check your fans to make sure their working properly as well. You might have a little water loss due to the fact when you drained it and did your flush you there was some air in the lines so that would be normal to see it drop a little after the flush. It could be highly likely that you have a bad pump as well. I would start with the fans as I have had the same problem and ended up being the fans.

Thanks. I will clean the rad fins and check a/c lines and fan. Then pull out the t-stat. What would be the first clue that the water pump is bad

53,050

Also I see you mention if you screwed up putting in thermostat . Trust me it is easy to put the thermostat in the wrong way sometimes. Take out and check.

1 people found this helpful.
385

On the fans when the vehicle is off of course just give them a little spin they should have a very mild resistance on them when you go to spin them. If the water pump is bad it should be leaking around the housing is usually a sign..

1 people found this helpful.
53,050

All water pump has what they call a weep holes on bottom of pump so if pump starts to leak it will leak from bottom of pump from that hole.

53,050

Yes that could be your problem since the A.C condenser is in front of the radiator maybe that's why it over heats when you turn on A.C condenser being partially clogged with dirt and bugs A.C condenser getting more air flow then radiator.

My 95 Nissan pick up is running hot pushing steam or liquid out the over flow there no water in oil or oil in water

Your Answer:

Truck

Looking for a Used Truck in your area?

CarGurus has 1 nationwide Truck listings and the tools to find you a great deal.

Postal Code:

Nissan Truck Experts

  • #1
    MrPerk
    Reputation
    520
  • #2
    Jimmy_H
    Reputation
    350
  • #3
    Dannyl
    Reputation
    310
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota Tacoma
27 Great Deals out of 760 listings starting at $6,999
Used Toyota Pickup
1 listing
Used Ford F-150
107 Great Deals out of 7,981 listings starting at $871
Used Ford Ranger
9 Great Deals out of 800 listings starting at $4,950
Used Chevrolet S-10
4 listings
Used Toyota 4Runner
5 Great Deals out of 430 listings starting at $2,560
Used Mazda B-Series
13 listings starting at $1,998
Used Dodge RAM 1500
177 listings starting at $3,500

Used Cars for Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.