Secondary Radiator Fan (Electric)

[Davidtj]

The pcm is happy at 195 which is minimum operating temp ( correct Tstat for TJ is 195)
Think about it what your saying is in the winter time when it’s not possible to go above 195 unless your putting card board in front of your radiator the engine isn’t running properly

 

[Rober2wo]

Hi, im new here, and just got my hands on a 97 2.5
ive been researching a lot before i try and do some mods, and i find a lot of comments with the ''running at 210 is normal'' thing...
BUT, i live in a place you can compare to las vegas, on the hottest days we can get up to 113ºf, and its always hot 3/4 of the year, we rarely get bellow 44, and even when we do, its just not more than 4 weeks a year...
NOW, watter boiling temp decreases as you gain altitude, and where i live it easily is just below the 210º mark, and i find myself lots of time on the 210, i hav had to refill lots of time the coolant, and i find it lots of times bubbling...
i get the ''service the coolant system'', i will, i might have to change the rad which looks like it was repaired, it might not be working at full capacity, but then again, at afternoon when the sun starts coming down temp does too, and it stay at good 195-200 (one line before the 210)...
i actually am planning on doing some performance mods like 12 hole injectors and performance ignition system, and probs in a few years the boostedtech supercharger (once everything else ir in perfect state)
so, should i keep the mechanical fan? is there a fan blades replacement that actually works better than OEM? should i actually go for the e.fan? i was actually planning on getting to a aluminum rad but ive seen lots of ppl saying it is not that good, the leak very easily and in the end the OEM one performs better as long as all the cooling system is on a good state.
Thanks for your time and i appreciate any comments!

 

[pagrey]

@Rober2wo, altitude doesn't matter, the cooling system runs at 18psi so the outside pressure isn't too important. Bubbling generally means you have a leak. I'd replace the radiator cap first. Personally I wouldn't do any performance mods, they are a waste of time and money. Keep the mechanical fan.

 

[Rober2wo]

@Rober2wo, altitude doesn't matter, the cooling system runs at 18psi so the outside pressure isn't too important. Bubbling generally means you have a leak. I'd replace the radiator cap first. Personally I wouldn't do any performance mods, they are a waste of time and money. Keep the mechanical fan.

TNX!
i have already replaced the cap, the fan clutch looks new and works perfectly, and apparently the pump works fine too. What i intend to do next is a super flush of the cooling system, and take the rad to a local shop to see if it actually works fine or if i have to replace it.
And for the performance upgrades, ive seen tons of people very happy with a 4 and 12 hole injectors, and seen some dyno test scores that they actually work
for the ignition system, i have found not much yet on the TJ, but my personal experience is it works marvels on an old car i had, still gonna research about that.

 

[Jerry Bransford]

And for the performance upgrades, ive seen tons of people very happy with a 4 and 12 hole injectors, and seen some dyno test scores that they actually work
for the ignition system, i have found not much yet on the TJ, but my personal experience is it works marvels on an old car i had, still gonna research about that.

Dynos can present data in any way you want it to appear, they are not precision devices and only give an estimate. You may have read people swearing the aftermarket injectors they installed cut their 0-60 time by 3 seconds, improved their MPG by 5 mpg, and other such malarkey but they're just justifying their decision so they can feel good about it. You're not going to pick up any performance, mpg, etc. by replacing the OE Mopar injectors with aftermarket replacements. Not to mention most aftermarket "performance" parts are usually cheaply made with nowhere near the quality of the OEM part. Keep in mind the PCM keeps very tight control on how much fuel can be sprayed into the combustion chamber so the correct air/fuel ratio is maintained. The PCM won't allow an aftermarket fuel injector to spray any more fuel than the Mopar injector did. Not happening.