F0x Slaughter

A cold air intake will throw off the tune a tiny bit. So you changed the ECTS in the water pump, not the head? If I recall correctly the ECTS in the water pump controls the gauge and the one in the head is what the PCM uses. It must be in working order as fuel curves use the coolant temperature to dictate fuel. Cold engines need more fuel as fuel doesn't atomize well in cold temps.


Running rich can cause detonation, which is where I believe your knock is coming from. As I said you are pulling way rich, idle is way off.

grazi

I just double checked, the ECT in waterpump is PCM..Thats what I changed.

F0x Slaughter

If I recall that one just runs the gauge and the one in the driver side head is what the PCM uses.

I wouldn't change out anything else until you have the PCM looked at or swapped out.

You could have already spent to much money to not have it solved.

grazi

http://shbox.com/1/temp_sensor1.jpg

F0x Slaughter

Haha thats why I said if I recall correctly. I have it backwards. The one in the driverside head controls the gauge.

killerz97

iTrader: (1)

Its possible that you broke the wire to the knock sensor doing plugs and wires since its a pain to do those rear 2 spark plugs on the passenger side

FAD2BLK93

Thats what i think as well, check the wire. If it is not reading correctlly or not at all, u will get a ton of retard!!

96capricemgr

iTrader: (1)

Have you looked over the EGR system beyond playing with the solenoid?
Just seems like the sort of rpm range that it would activate.

lt4388stroker

iTrader: (14)

fuel pump?

nitrous2fast

iTrader: (2)

i would check your plugs... i ran .040 when i was stock..

moehorsepower

iTrader: (3)

First off, if you are saying that your tach is bouncing around, then that is one of the symptoms of an Opti, 550 idle rpm, Yup, I have seen this on stock cars,

quik95lt1

iTrader: (7)

moe is probably right it sounds like an opti issue..........while im dowloading datamaster onto my computer so i can look at that tune.....fox mentioned something a while back in this thread.....MAF error.....gotta wonder why? im wondering if the maf has gone bad and the pcm is trying to run in SD mode.....

quik95lt1

iTrader: (7)

just looked at ur data log............ltft's are going rich......think its caused by the misfire.....misfire doesn't burn oxygen so it makes the O2s read a false lean so its trying to compinsate for an issue that isnt there........the misfire can also trigger the knock retard......im with moe on the opti on this one.......if it was a true maf failure it wouldn't be in CL fueling....

96TransAmboosted

iTrader: (8)

The MAF code is due to not being hooked up. He the car hooked it back up. He needs to clear the PCM and take a new log

grazi

Thanks for the feedback guys. Yes the MAF code was due to me running it with MAF unplugged.....I had no change in power with MAF plugged in or unplugged...If knock sensor is unplugged or wire broke, wouldnt it set a code? Fuel pump OK 35 at idle and 42 at WOT....Waiting to get laptop back will make another run.....Thanks again for the help...

gregrob

iTrader: (8)

Agree, 550 is stock on some calibrations for an auto.. whoever said it can't be is misinformed.

I would start with a stock tune just to be sure.

And definitely pull the cat off...

Coyotesa

iTrader: (1)

I still say have a look at the cat...

-Buddy-

JC316

iTrader: (1)

I can unplug the knock sensor on my 89 and no code is set.

cookietime

When i changed out my cia , I broke 1 of the three little wires that goes to the maf connector , just under the black tape. car ran like dogshit until I found it and soldered it up. Now its fine, simpleest first.

F0x Slaughter

Thats because your car is a 89.