ok, today is the first time i had a chance to start my 88 TII. the engine starts and runs a little rough and stalls. however, when i press the accelerator pedal, the idle does not increase unless i lightly the gas which increases the idle about 500rpm but for the most part touching the accelerator pedal does nothing. it almost seems like a mass airflow sensor problem... when cranking the engine over, the mass airflow sensor's flapper opens slightly, so i know its somewhat working. i'm getting good spark and plenty of gas, as the engine had flooded quickly and i had to de-flood. compression is good and there are no known vaccume leaks. i dont know where to go next. i dont know how to go about testing the mass airflow sensor.

 

ok, i found the test procedeure in the fsm on the afm so i'll start there and post the results. any guidence in between would be awesome!

 

are there any other things i should be checking that i havent mentioned?

 

as a note, i pulled the afm yesterday and when looking at the turbo side of it, i noticed that the flapper doesnt seal when its at its resting position. its even with the side of the afm at the top and as you follow the flapper down, you'll notice that the gap between the flapper and the sidewall of the afm increases signifigantly. is that normal for the afm flapper?

as a note, my ecu is an N332 and teh afm and presure sensor are N318 parts. will ther be any problem there?

 

I'm having the same problem with my 88 N/A. I to think it's the MAF
Again I have the same sympton's.

I had recently taken off the CAI to put on my other 7. I left the maf in the elements under the hood. It got a little wet and SO I oiled it some (flapper door)everything was fine. I tried starting after a few weeks and It started having the same problems.

What I'm going to do is re-oil my MAF flapper and see what she does. You could give this a try.

Nice collection by the way!

 

thank you for the advice and for the copliment. i dont think i should oil the afm, as it moves freely and has no point in which it sticks. thank you for your input though!

 

My MAF moves freely as well. If you use your finger and push it will fool you. Try running the car with no airbox. Then look at the flapper as someone else revs the gas.

If it won't open or hesitates to open then try to mock the throttle cable and help open the flapper.

 

well, it wont hurt to give that a try...

 

anyone have any other ideas besides the afm?

 

hi I'm from Guatemala and I have a turboII my car have the same problem I push the accelerator but the idle does not increase and my problem is the TPS (throttle position sensor) is under the intercooler and it has a graduation----

 

i will check the tps and post back what i find....

 

I've had ONE bad TPS in my life and the symptoms were that the car would start, but applying throttle did nothing. Opened the hood and noticed the TPS plunger was stuck. Pulled the plug off the TPS and drove home from the store.

So I'm saying, disconnect the TPS and see if you have throttle response now or not. If nothing changes.............it ain't the TPS.

Has this afm of yours worked for you before? Or is it *new*? New as in bought off EBAY or the junk yard?

 

the afm was on the car when i bought it. i bought the car with all of the emissions components removed. the previous owner had a pulsation damper leak and a subsiquent engine fire. he removed the uim and repaired the wiring and replaced the pulsation damper and said the car fine ran after that. he then decided to remove the emissions components. once he did that, he advised that the engine was hard to start and when it did start, he would get the same condition as i have now. i took posession of the car, installed ALL of the emissions components back on the car, repaired some wiring that i saw needed repaired still, and tried to start the engine.
same problem.
i called the guy up and told him what was going on with the car and as mentioned before, he said he was experiencing the same problem. i noticed that the afm is an N318 piece, the pressure sensor sensor is also an N318 piece and my ecu is an N332 from an 87 TII. i have the low impedance injectors and the resistor pack. so i guess im asking where i should look now. i'll test the afm and the tps today and see that the resistance values check ok. after that i dont know where to go. would incorrectly placed vaccume lines have an effect on running condition? the only ones that may be incorrect are the ones behind the uim.