prob. after 160 t-stat

[TYGUY]

i changed a few things but i think my problem is the 160 deg. t-stat. i did a complete tune up. Plugs, wires, cap, rotor, intercooler pump, hoses, and an adjustable FPR. I set it at 43 witch I read was pretty close to stock.

Problem: lots of spark retard, at some points 10.xx via Data Master, and at low boost and RPM levels. i added some octane booster (TORCO). it helped a ton now its at max 3.xx. But it did this before without the TORCO. i also got a rich code. ?? this is why I thought t-stat.

So I thought it was NOT going closed loop. Well I checked and it IS going into closed loop. But engine temps only reached 158 max. and that was after driving for a while. It was 34 deg out yesterday. I also see that at one time injector duty cycle was at 109.6…..? I need to find the time I guess to put the 50# injectors and the chip in. but will this make the spark retard problem worse? Sorry for the long post and sorry if this doesn’t make sense (I write how I talk). Any help would be very much appreciated.

Dustin

 

[Merk]

Re: prob. after 160 t-stat

change back to the 195 and re-evaluate.

Post your results

 

[TYTILIDIE]

Re: prob. after 160 t-stat

I dont care what anyone says, a 160* does no harm. Ive benn runnning one for about a year now and have had 0 issues. Are you sure you didnt screw up your plugs wires cap or rotor? Did you check your timing afterwards? What wires are you using? Wgat plugs at what gap?

 

[TYGUY]

Re: prob. after 160 t-stat

have not checked the timing... i should be able to tomorrow. plugs are NGK stock replacement numbers. gap @ stock also. (read it off the sticker under the hood). i have am MSD 6AL. should i widen the gap? how should i set the FPR? what about cold weather, could that give spark retard? i know on my lightning it ran like dookie when it was to cold out.

Dustin

 

[KETCH-UP]

Re: prob. after 160 t-stat

I second the notion of going back to the 195. My TY stumbles and runs crappy with a 160 in it, and I went back and forth 2 times with 2 different thermostats. Ended up with a 180 for year round. I dont know why most trucks are happy with 160, and some are not?

 

[MasterBlaster]

Re: prob. after 160 t-stat

The few times I drove my truck this winter it sucked ass. The heater got cold when driving after it warmed up in the drive way and the damn t-stat gauge moves like 1/8th of an inch. Previous owner said it was a 160deg.

 

[TYGUY]

Re: prob. after 160 t-stat

going by "feel" the truck has never ran better. but hool up DM and you see somthing is wrong.

MasterBlaster. how does your truck do in the summer?

Dustin

 

[MasterBlaster]

Re: prob. after 160 t-stat

MasterBlaster. how does your truck do in the summer?

Dustin

It doesn't run hot but thats strictly going off of the gauge. I wish I had a laptop and DM to get at this thing but thats not on the agenda any time soon. I just dont do too many open throttle blasts since its my only form of transportation right now.

 

[QUICK STORM]

Re: prob. after 160 t-stat

did you check your o2 sensor, what is your fuel trim at?

 

[TYGUY]

Re: prob. after 160 t-stat

did you check your o2 sensor, what is your fuel trim at?

L term Percent is -2.3 the O2 is @ low 900's (903-918) at the same point...
when in boost

i think it was bad gas or the cold weather... My TY seems to run different every day.
i am putting in the chip and 50's when i get back from this next business trip. and add an MSD distib, and a wide band see if i cant get it figured out.

Dustin

 

[QUICK STORM]

Re: prob. after 160 t-stat

i would probably change your 02 sensor since it is what control fuel trim

 

[TYGUY]

Re: prob. after 160 t-stat

is -2.3 bad?

 

[QUICK STORM]

Re: prob. after 160 t-stat

yes, this means that the vehcile is running rich and the computer is compensating by pulling fuel. change the o2 sensor and pull your ecm a and b fuses to reset the short term/long term fuel trim

 

[TYGUY]

Re: prob. after 160 t-stat

i changed my FPR also.... is the FP set correct ar 43? i will pick up an O2 tomorrow, thanks

 

[QUICK STORM]

Re: prob. after 160 t-stat

is it adjustable? if not all you do is install it

 

[TYGUY]

Re: prob. after 160 t-stat

its adustable.... who sales the m500 WB02? since i need a new O2.

 

[QUICK STORM]

Re: prob. after 160 t-stat

your going to need a stock o2 sensor as well as a wideband o2 sensor

 

[TYGUY]

Re: prob. after 160 t-stat

the PLX m-500 sims the stock narrow band, and adds the wide band feature too.