Okay, before someone says anything about this - I already did a search and read everything I could find on the topic. I just got a 91 240SX - the non-fastback version. It's in good shape with about 140K on it. I seem to have the infamous timing belt ticking noise. I have a question about that though. I notice some people talk about the fact that it happens to them when they rev the engine (at higher rpms) while some talk about it happening when it idles. Mine seems to be the lower rpm version - does the difference in the two hold any significance ? I'll most likely get it looked at sometime soon, but I'm hoping it will last until I get some money to get it worked on.
Second - my water temp gauge is acting screwy. It works fine until I hit the accelerator. Then it falls all the way down to cold and sometimes shakes around a bit. When I slow to a stop, it returns to normal. Any clue on that ? Would the sending unit really be affected by the accelerator or speed ? I'm pretty sure my cooling system isn't THAT good (it immediately jumps to full cold). Also, whereabout is that sensor ? I read the threads talking about the two different ones (one to the ECU and one to the gauge), but no one ever answered the only guy who asked where the specific locations of them were. The only thing I've found is "follow the upper radiator hose" but didn't say which sensor that was.
Infamous Ticking Sound & Water Temp gauge
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Und3rprshUr
- Posts: 570
- Joined: Sat Oct 19, 2002 5:53 am
- Car: My 300Z
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Und3rprshUr
- Posts: 570
- Joined: Sat Oct 19, 2002 5:53 am
- Car: My 300Z
on the intake manifold near the front of the valve cover single wire black plug. when you pull the connector off. the metal tab should be secure to the base. if it has any free movement it is bad. the reason it makes your gauge drop to cold when accel is because the windspeed from the fan is increased on accel. this blows back on the sensor causeing it to go open.
Okay, think I found it. Yeah, I think I need a new sensor/sender. Looks like the car had an oil leak at one point in time - there was sludge all over it and it was really loose. I'll have to get that replaced. I just dropped the car off to the shop today so now I get to see what the ticking is...hope it's something fairly inexpensive....
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NITE KIDS_S13
- Posts: 5
- Joined: Fri Sep 05, 2003 10:32 am
Well, I had my shop look at it yesterday. Seems it is the timing chain. It's slapping against the cover. Since I plan to do the Silvia swap within a year, I'm going to try and make it last. The guy at the shop even told me that if I'm going to change it that quickly, it's probably not worth the time and money to spend on an engine that's only going to be in there for just a short period. Even if the engine gets messed up, I'll just park it and finish saving for the swap.