pls help...mpfi problems
bambam89lx
11-10-2003, 09:38 AM
Hey guys....I'm calling on ur help again. Heres the scoop...I just dropped in a 91 crx si motor(D16A6) into my 88 dx hatch. I'm having a problem. My car turns over but will not start. My ecu is throwing a code 4 and a code 20.
Code 4=crank angle sensor (the two blue wires that I added)
code 20=electric load (wtf?)
I know its not the timing and the motor is fine. The car I took the motor out of ran fine. I drove it to the place where the motor was pulled. And I know the timing is perfect because I didnt touch the distributor at all or touch or remove the head...nothing has changed from when the motor was pulled so that is NOT the problem.
Heres what I've found out... I checked each spark plug in each cylinder...they were all soaked with gas, so fuel is being injected just fine. So then you may think there was no spark right? wrong....I checked each spark plug wire...I'm getting sufficient spark to each cylinder. So why aren't I getting combustion? Could it be that I put the injector plugs in the wrong order? Because then fuel would be injected into the wrong cylinder when the spark is occuring in another...Know what I mean?
The thing is, when I read the mpfi tutorials they say injector #1, injector #2 and so on. But, they don't tell you in which order they go, for example, when you're looking at the injectors under your hood, what order and what color do they go in?
4 3 2 1 OR
1 2 3 4 OR
4 2 3 1 ?
See what I'm saying? does the order go left to right, right to left, or does the order go the same as the firing order like the third example above?
Also which order do the colors go at the ecu pins? Which color and which number injector are at each of the four pins?
For example right now I have it like this:
A1=injector #1, Brown wire
A3=injector #2, Red wire
A5=injector #3, Blue wire
A7=injector #4, Yellow wire
I also ran the same color wire from the ecu pins straight to the injector plugs (as opposed to the way the MPFI tutorials tell you how to do it, they tell you to cut but I just depinned and repinned the wires).
One last thing to add, I followed the directions very carefully, I also use a multimeter to test all the wires that I spliced to see if there were any breaks and no, all the wires were fine. I also soldered all connections, heat shrinked them, then electrical taped them, then loomed them and then electrical taped them so that it came out very clean, but I'm still having these problems....WHY?
Please help me....thx
Code 4=crank angle sensor (the two blue wires that I added)
code 20=electric load (wtf?)
I know its not the timing and the motor is fine. The car I took the motor out of ran fine. I drove it to the place where the motor was pulled. And I know the timing is perfect because I didnt touch the distributor at all or touch or remove the head...nothing has changed from when the motor was pulled so that is NOT the problem.
Heres what I've found out... I checked each spark plug in each cylinder...they were all soaked with gas, so fuel is being injected just fine. So then you may think there was no spark right? wrong....I checked each spark plug wire...I'm getting sufficient spark to each cylinder. So why aren't I getting combustion? Could it be that I put the injector plugs in the wrong order? Because then fuel would be injected into the wrong cylinder when the spark is occuring in another...Know what I mean?
The thing is, when I read the mpfi tutorials they say injector #1, injector #2 and so on. But, they don't tell you in which order they go, for example, when you're looking at the injectors under your hood, what order and what color do they go in?
4 3 2 1 OR
1 2 3 4 OR
4 2 3 1 ?
See what I'm saying? does the order go left to right, right to left, or does the order go the same as the firing order like the third example above?
Also which order do the colors go at the ecu pins? Which color and which number injector are at each of the four pins?
For example right now I have it like this:
A1=injector #1, Brown wire
A3=injector #2, Red wire
A5=injector #3, Blue wire
A7=injector #4, Yellow wire
I also ran the same color wire from the ecu pins straight to the injector plugs (as opposed to the way the MPFI tutorials tell you how to do it, they tell you to cut but I just depinned and repinned the wires).
One last thing to add, I followed the directions very carefully, I also use a multimeter to test all the wires that I spliced to see if there were any breaks and no, all the wires were fine. I also soldered all connections, heat shrinked them, then electrical taped them, then loomed them and then electrical taped them so that it came out very clean, but I'm still having these problems....WHY?
Please help me....thx
Masta
11-10-2003, 07:51 PM
bump for a friend that needs help.
sastanley
11-11-2003, 10:12 AM
Well Dude...the firing order is 1 - 3 - 4 - 2 & the No. #1 cylinder is closest to the timing belt.
I'd go back thru and double check everything and make sure you did all your stuff with those things in mind.
Good Luck
I'd go back thru and double check everything and make sure you did all your stuff with those things in mind.
Good Luck
4GZChatch
11-11-2003, 11:53 AM
which position on the distributor do you put the no. 1 plug wire on? I am having a similar problem... Is this is the same as for the Z6 motor?
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