scanmaster readings

[84wh1]

Hey guys..........as ive posted on another topic, my car is running kinda funny. It starts, I let it run and 20 minutes later, it stalls out. It then wont start again until its cooled down which is usually 2-3 hours later. When it runs, its fairly smooth. When it was running a few hours ago, I got the following readings from the scanmaster at idle. Are these readings where they should be?

O2......171-850. The levels kept fluctuating (normal or not?)
AF......06
L8......42-44
Bat.....14
Int......128
BL.......128
Clt......103
Ats......71
RPM......775-875
tps.......44
IAC.......78
CC........09-119 (it kept climbing and starting over. not sure if thats normal)
mal......23 (never changed a sensor after swaping the ECM to an 87. I was told I didnt need to)

Also, the gas in the car was old. It had sat for a year without being started with 1/2 or less of a tank. After it started doing the stalling thing, I siphoned the tank and added some "fuel additive" and 20 liters of fresh gas.

Also, the general thought was to check for spark. What am i suppose to check and where?

Thoughts?

 

[BRAD_PADGETT]

The only this that is out of adjustment to me is the IAC. Should be 15-30 at idle hot. Dying out is a symptom after warm up of many things. Investigate coil module and fuel pump as a start. Brad

 

[BRAD_PADGETT]

Fuel filter?

 

[84wh1]

How do I adjust the IAC? If I'm high, does that mean i need a new IAC? Also, how do I check the coil module and what shud I look for? Is there also a way to check the fuel pump? A test of the sort? As for the fuel filter, I'll change it out this week.

 

[RIFF RAFF]

how do i adjust the iac? If i'm high, does that mean i need a new iac? Also, how do i check the coil module and what shud i look for? Is there also a way to check the fuel pump? A test of the sort? As for the fuel filter, i'll change it out this week.

your car was not hot enough to settle your scanmaster readings ..need a higher clt.. Or coolant temp. Numbers will be there closest ..at running temp at least 160 .. Then give us those numbers ..

 

[turbonut85]

Since your clt temp was only 103, I'd say the readings you took are inaccurate as the car was still in open-loop...(the INT and BLM locked at 128) Wait for the clt reading to be 160* or so and then take the scanmaster readings. What chip are you running?? Code 23 is the MAT, or IAT sensor. Unless you added this sensor when you converted to the 86-87 ECM, your car doesn't have it...hence the MAL code 23.





Edit: You beat me to it OIL MAN....:smile:

 

[84wh1]

I wish i could get the car to run hotter right now, but it stalls out too soon. As for the chip, its a Poston 93. As for the mal23 code, i never changed the MAT when I swapped. I was told it wasnt needed. Thx

 

[sully442]

I think code 23 is air temp sensor. 85 does not have it unless you added it. Your chip maybe be able to be programmed to ignore this.