srt4pilot

ok so i have an 88 ef with a 95 d16zc sohc motor in it, the ecu is a chipped p28 obd1, the motor has the obd1 map sensor on it HOWEVER, i changed the map sensor that bolts on the top of the throttle body, now the old map sensor on the firewall ( the stock ef one) i pulled the plug out of the bottom and pluged it into the obd1 map sensor, now wat do i need to do with that top plug, do i need to get a second new sensor for the top plug, do i unplug it, i left it hooked up to the sensor that has the vac lines that run into the cannister and the back of the intake manifold.



SO NOW TO MY PROBLEM........the car is idling fine, but when i give it a little bit of gas it starts to stutter, i keep giving it a lil and lil more gas and it continues to stutter until it reaches a point where it starts revvin hella high and the studder stops but theres no smooth transistion its either revin love around 2000 rpms and stuttering and then i give it a lil more gas and it switches and runs like 5000 an does stutter, i have changed most of my parts, map sensor to obd1, ive changed the main relay, im at a loss for wat is wrong with the car, any insight would be greatly appreciated? give me some tips and ill tell you if ive tried it fixed it or changed it, ive been at this for almost 2 months now and this car is way to simple to be this big a pain in the ***. PLEASE PLEASE PLEASE PLEASE HELP IM LOSING MY MIND WITH THIS PIECE

B serious

iTrader: (1)

So you're saying that the car was stuttering and giving you issues before you changed out the map?

Was it newly swapped and you always had the issue...or did the problem just start happening out of nowhere?

srt4pilot

the motor is freshly swapped, the timing is perfect i checked that and double checked that, the problem started from the very beginning, i had the obd1 computer on there and had the stock map sensor for the 88 ef hooked up and thats when it was doing it, so then i releazied i had to changed the map sensor, so i took out the bottom plug and attached it to my new map sensor at the top of the intake mani and then the second plug the top one on the old map sensor is still plugged in, so i dont know if there is a second obd1 sensor i need for that? so ya after i put the new obd1 map sensor on and plugged it in its still doing the same thing i figured that my problem was the obd0 map sensor with the obd1 comp

Former User

Just leave the top connector for the purge control solenoid plugged in. I don't see this doing any harm as it is just part of the evaporative control system.

Regarding the rough running, in what condition are the plugs, wires, cap, and rotor? Is the CEL ON?

srt4pilot

the plugs wires are new the dizzy is off hondatech, but its the second one ive tried on the car with the same results and i did change the ignitor in the dizzy.

Former User

Is the CEL ON? Have you measured the fuel pressure?

srt4pilot

i havent measured the fuel pressure, and the cel is not on but it appears there might be some issues with the gauge cluster

Former User

Does the CEL work, that is turns on for 2 seconds and then turns off with the key in ON(II)?

srt4pilot

ill have to check but i know it did at first then i had a lil problem with the cluster not really working at all so ill have to look at that

Former User

It's critical to have the CEL working so that the ECU can tell you whether any sensor codes are being thrown.

Also make sure that the plug wires and injector plugs are in the correct firing order and that no sensor connectors are swapped.

srt4pilot

ok ill check it, its jsut the old like dx cluster with no rpm or anything so its kinda shitty but ill check it

srt4pilot

someone on ef-honda.com told me that i had to switch osme wires at the tps? anyone know anything about that im using the obd1 tps so idk why i would have to switch wires

Former User

What have you done with the TPS wires?

srt4pilot

i havent done anything with them just plugged them in as is

Former User

So you are using the EF engine wire harness with an OBDI adaptor/conversion?

srt4pilot

i am using a harness built for me from monotech, for the conversition

Former User

Are the wires in your TPS wire harness connector organized like the connector on the right or left below?

srt4pilot

i honestly dont understand wat it could be, as far as i can tell everything is hooked up all the sensors are good, OH there is no o2 sensor hooked up but i doubt it cause wat im experiencing

srt4pilot

ill look tomorrow the cars not here, wat should it be so i can change it if its wrong

Former User

Should be like connector on the right. Also check whether the CEL works. At the very least, the CEL should be ON for the missing O2 sensor. But pull the codes as others may be stored in the ECU.

srt4pilot

also wat if some of my stuff is for the 1.5 does it matter