not sure how long it has been since i have created a thread on here, guess i need to blow some cobwebs off and try to remember how, lol. as some of you know i have complained a few times about my truck being silly and skipping, bucking, missing, afterfiring, whatever you want to call it at times. i took a trip to orlando a few months ago and put a new crank sensor in because my old one had been narrowed down to be the culprit. well made the 6 hour drive down there fine, and a full tank of gas of riding around in town, the street races, and a few passes at the track. one the way home about 60 miles from home it started running so bad i had to pull over and get my dad to pull me how. took him 1 hour to come and get me, and it idles the whole way home being pulled. have driven it ever since then with the occasional skip but i have just been dealing(CUSSING) with it. put the truck on the lift a few days ago and noticed just like the last crank sensor, the potting looks like it got too hot and melted, which i think is causing it to get moisture in it and short out, or some wires to touch and short. going to go swap it out for another and see how it goes, and i am thinking about makeing a heat sheid around it with some cool tape too. it is on of the little bs advance auto sensors, probably the whole problem. just want to know if any of you guys have had a problem with these cheap sensors. the reason i think it is causeing it is becasue it will come up with a loss of crank or cam sensor code sometimes, and it did when it took a dump that day too. i had thought of a vopor lock, but it is intermintet so much an lasts 1/2 a second on short trips(1 or 2 hours). any ideas, i need to go to daytona soon and would rather take my truck than borrow my dads. sorry for the novel and mis spelled words, lol.

 

Wow, back from the dead?!?!

I have a cheap advance auto CPS in my truck. Had it ever since I did the transmission swap and never had a problem with it. Do you think your headers are too close to it and overheating it?

 

i guess i am, lol. i was thinking about that and they are pretty close to it, thats why i was wondering about the sensor, my engine is also 1 inch foreward compared to a factory 318 truck, not as close to the firewall, so maybe it is catching som more heat. i guess it is time to do a booty fab heat sheild!

 

Welcome back!

Ya try a heat shield, or try to get some kind of coating on it. I'm not to sure how the bed liner rubber deals with heat, but something that strong could help.

 

I doubt it. The headers and the CPS are both attached to the engine, so if you move the whole engine, both get moved the same amount all in relation to each other. If anything, not being near the firewall should lower the temp at the CPS because there is more air. I bet its just the longer headers (if I remember right you have longer headers than shorties right?). I know someone with a '95 4x4 a lot like mine with shorty headers that overheated and fried his PCM. Thats why I wrapped mine. The header wrap keeps the temp down about 200 degrees.

Anyway, why is your engine moved up an inch?

 

LOL! Ya that is true. We tested the temps of a wrapped and non wrapped header and it was 200 degrees.

I wish I put wrap on mine. That is a dramatic difference! But hey in the winter, it will be nice to stand outside my truck with that heat coming out of it.

 

Lol, yeah, my neighbor with the truck I was referring to has a functional cowl style hood scoop he installed to help get the air out from under the hood and keep it cooler and he said he hasn't had to run the defroster since :P

 

i think the frame mounts are a little different for the v6 and v8 trucks. but i can live with it, makes it easier to change the sensor, disty, and tranmission. and yes they are mid length headers. i wish i would have wrapped mine too, but it is too much work to get them in and out so i am just going to let it ride, maybe when i change my leaky collector gaskets i will pull the headers out and wrap them, doubt it though, lol. cowl hood would be nice too, but so would the money to buy one

 

Huh, ok... thats what I was wondering when you first mentioned it. I asked cause I want to eventually drop that 408 into the 2wd (not that either the engine or the truck are remotely ready :P) and I might find some v8 frame mounts if they are different. I want the engine as far back as I can get it for better weight distribution.

But anyway, I agree you should just make a sheet metal heat shield... simple and effective. Thats what my neighbor did... he made one for everything under the hood that could be harmed by the excessive heat.