Ok well i have a 90 integra 4 door gs, with a gsr head and obd1 convertion and i tuned it with crome. I've had this setup for about 6 months now and it has ran fine. But recently it would die out when i was driving it. But it didn't do it very often So i figured it was the main relay. I changed the relay and i thought it was fine but like i said it only did i once in a while so couldn't tell. Well today it started doing it again. So i put another main relay in and still does it. The fuel pump is coming on like it should. but the thing is about 5 months ago the tps **** out so i unplugged it and haven't gotten around to changing it so the cel is always on but it runs fine. But i noticed when it does this the cel goes out wich is weird. the cel still turns on when i first turn the key till the fuel pump primes then it goes out like it normaly does but once i start it it stays out and it normaly comes back on. and if i am in the throttle for more then like 2 seconds it dies out till it gets to idle and than it will stay running. and it will let me rev it up again but only for like 2 second and it will sounds like i turn the key off till it dies down to idle and then it will do it again i tried reburning my chip but same thing and i put a stock p72 ecu in it and it still does it. i cant figure it out. but like i said the cel should be on because of the tps but it isnt. i tried jumping the harness to check the codes or to see if it was still throwing the tps code still and it is but once i unplug the jumper the cel goes out again. i don't know what to do. has this happend to anyone else

 

anyone??

 

Get a new TPS and set it correctly.

 

Sounds like you have a wiring/tps/ecu problem ?
I would suggest checking your tps voltages.
If you can't figure it out take the car to a local experience dyno tuner that knows what they are doing to troubleshoot the issue.

 

He's trying to run with the TPS unplugged because he says it stopped working.

 

the tps has been junk for a while now and with it unplugged it runs fine. its something electrical cuz when it does this the cel isn't on like it normally would be. like i said if i jump it to check the cel it still blinks and throws the tps code but once i unplug the jumper the cel goes out. it makes no sence to me. ive been building hondas and tuning honda ecu's for like 10 years now and ive never had this happen. but i need to figure it out asap

 

i have searched and searched and still nothing... i started it today and it wasnt doing it but i know it will again. can someone help me??

 

i find it hard to believe that im the only one thats had this problem... someone must know what it is. please help

 

Im going crazy, ive been searching for hours and still nothing. Ive found post that start out simaler but then end up being something dumb. All the other posts end up being TPS. Mine has ran fine without the TPS for a while now. Im gonna put one on, but i know thats not it cuz of the whole cel not being on when it does it... I was kinda thinking it was the ICM but that wouldn't make the cel shut off so idk. I need my car fixed Please help

 

Have you found out what you do not have when engine stalls, no fuel or no spark?

When it stalls do you still have ign., does radio still work, does blower still work, do wipers work, are gauges still working?

When it stalls, what does it take to restart the engine?

When you say, "But recently it would die out when i was driving it"
You do mean the engine stalls, correct? 94

 

No sorry i just suck at wording things when Im typing lol... It doesn't stall it just acts like say i was driving it and i shut the key off but stayed in the throttle that bogging sound that it would make with the throttle body open but not running. If i push the clutch in and let off the gas it will drop to idle and stay running like nothings wrong. So ill let the clutch out and it will seem fine for a few seconds and it will do it again. It also does it when i just free rev it, but it never stalls. Almost seems like its not getting fuel or spark but like i said the CEL shuts off when it does this, so Im thinking that its something to do with ignition/spark but idk what exactly.

 

OIC, check the PGM-FI Main Relay, it sounds like it could be be a fuel pressure issue. 94

 

ya thats what i was thinking but i changed it and it still does it. not saying your wrong but i just don't think two relays would do the same thing but maybe... ill try to track down another main relay just for the hell of it but what else could t be?

 

Is there anything else that is between the main relay and the ignition that Im missing or skipping over or between the ecu and main relay cuz the whole CEL not being on when it should be is making no sense

 

What I mean is check the powers, grounds and ecu signal into PGM-FI Main Relay.

There are two powers, [three if you count the hot during crank to start] one is switched hot in run and start and the other is hot at all times.
Black/yellow fuse 24 - 15A hot in run and start.
Yellow/white fuse 38 - 10A hot at all times.
Blue/white fuse 18 - 7.5A hot during crank to start.
Black ground.
Green/black, ground signal from ECU to fuel pump relay.

Make sure the fuses are properly connected, not corroded or loose in the fuse box.
Make sure the ground is good.
Make sure the fuel injector resistor pack is properly plugged in and there is no corrosion on the plug terminals.

If all the above is good check the connections in the distributor for the coil and ICM, [igniter] make sure all terminals are tight. 94

 

thanks for the reply... ill try that when i get the chance and ill get back to you. and is that in the under the dash fuse box or under the hood?? and is that on a 90 integra?? just wondering

 

Fuse 18 and 24 are in under dash fuse box and fuse 38 is in engine bay fuse box.
Yes it is the wiring for 90 - 91 G2s.

Pay close attention the fuse 38 - 10A, [hot at all times] in engine bay fuse box, it is power for the ECU, fuel injectors and a few engine sensor/valves and the 12V+ side of fuel pump relay.

Don't forget to check the connectors in the distributor, especially the ones to the ICM, unplug them, [one at a time] crimp the terminal, [female quick release] a little so they are tight going on, a bit of dielectric grease on the terminal can't hurt either. 94

 

Is there a relay that runs the check engine light from the ecu, or another relay that does the ignition other then the main reay. cuz something isn't turning on and its making the cel stay out. thats when it does this. usually the first time i start it during the day it will run right, but if i shut it off and start it again the cel will stay out and it wont run right. If i let it idle for a few mins something will click and the cel will come on and its fine again till i shut it off again. I need to figure this out asap thanks

 

anyone???

 

Seriously no one knows what's wrong with my car. My car can't be the only one in the world that this has happened to. There's got to be something between the ecu and idk maybe the main relay or the cel. . . I really need to figure this out. Its getting worse.

 

Well mine does not start all together but I was getting the same problem right after replacing my head gasket it would just fall on its *** at idle thought it was timing issue you might want to check that and after a lot of research my problem could be the crank sensor but havent had time to check it. People say crank sensors do not throw codes but I dont know maybe this might be helpful?

 

Its not that at all... When the cel comes on it runs fine. If it had a bad head gasket or the timing was off it would run like that all the time. Im obd1 so i don't have a crank sensor. Its not fuel cuz the fuel pump is on... its something to do with ignition. Man i love this car but its driving me crazy right now. Ive been working on hondas for a long time and there has never been something that i couldn't figure out and fix, but im stumped on this one

 

never said it was your head gasket but if you figure it out make sure to post it!

 

well i changed the icm today and that wasnt it either... this is so dumb, i did the main relay harness check and it checked out fine... theres got to be something between the ignition, main relay and ecu that is doing this. But i can't figure it out. It suck cuz the car runs so good when it isn't doing this. Tonight when i changed the icm it fired right up and ran fine. but when i got home i shut it off and started it back up and it was doing it again...wtf is going on??