Hey guys,

I have a $50 coupon at advance auto and want to spend it on replacing some sensors which I am pretty sure have never been replaced. So far I'm getting:

o2 sensor
knock sensor
air charge temp sensor
air cleaner temp sensor
MAP sensor
coolant temp sensor

should I get a new throttle position sensor? Anything else I should pick up?

Thanks

 

if you want you could get me some injector o-rings lol, jp.

nice though.

 

Do you have any codes telling you something is bad? Do you have bad gas mileage? Do you have poor throttle response? do you have overheating issues? Don't spend $ "just to spend $. If it ain't broke, don't fix it.

 

I tore down the engine two years ago, replaced all gaskets, put new springs and seals in the heads and swapped in a LT1 cam. Before that I was having all kinds of problems. After putting the car back together and doing a little prom tuning it runs pretty well when it gets up to normal operating temp. Now that I have a little tuning experience I realize that some of the parts I re-used I should probably replaced since they are all 20+ years old. I'm trying to insure the readings that the PCM is making decisions based off of are as accurate as possible.

 

just because are old doesnt mean need replaced i would really leave alone unless there really is an issue with any of them


really.


aftermarket new sensors arent gonna be any better quality than the original delco ones

really.

o2 sensor woul dbe good idea to replace sure

but the rest not unless they are faulty

imho theres better things to spend the money on

really

like nicer secondary wires and better stronger coolant/fuel hoses and better ign coil and better ign module, better oil, and such

have fun!!

 

I understand the idea of "if it ain't broke don't fix it"

However, its not like my car is operating at peak performance. Ideally I would like to electrically test everything that I am replacing to see if they are operating within spec. I will do some searching around to find out how to do this, if anybody knows of some good links please let me know.

 

I want to object to that 1 portion of your statement.

I had to replace my MAF earlier this year & the aftermarket one I got from Autozone is newer technology & I believe can flow more CFM, due to (what appears to me) the sensor's less cross-sectional area in the air stream. Besides that.....It is hard to believe that in 20 yrs, the technology to measure the airflow would not have gotten better at more accurate readings.

 

he doesnt have a maf sensor, I say if it ain't broke,dont fix it,but if anything it prob woulndt hurt to get a new o2 sensor.

 

I think i would do cap ,rotor,plugs if anything

 

I replaced cap, rotor, wires and plugs when I rebuilt the engine. Less than a thousand miles since then. And again, I'm definitely not running at 100% so I'm trying to eliminate any weak links. I don't know how many of you guys have done any prom tuning, but if my MAP readings are off by 10% that can directly affect what the PCM is doing to compensate for what it believes are low or high numbers.

 

O2 sensor, probably not a bad idea to replace, but stay away from the Bosh O2 sensor replacements.

Don't expect to gain any performance with new sensors.