fuel injection problems
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Elder User
Joined: Mar 2004
Posts: 500
Likes: 1
From: Penndel, PA
i've been running fuel injector cleaner with 94 octane. i'm honestly intimidated by the fuel injectors. not sure what i'm opening up. i've read that when they quit, they usually get stuck open which would flood the engine. doesn't appear to be the case, but anything is possible. next nice day, codes are first priority.
Posting Guru
Joined: Dec 2003
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low92flareside. I am not talking about the stuff you put in the gas tank. I am talking about the type you run into the fuel rail and run the engine off of for about 10 minutes. The stuff you add to the fuel tank is pretty useless if you have or develop problems. I have tried it before, but still ended up with dirty injectors. The fuel rail cleaner was run through and it was like a new engine, no miss and much more power. I's not certain that's your problem, but if it has never been done before on you vehicle, it will certainly help. I am determined now to make it a maintenance issue with my vehicles now. I will have it done every 40 to 50k.
New User
Joined: Feb 2004
Posts: 13
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From: Midwest
One more thing to try
One thing you can also check is the temperature sending unit for the ecm. On my 93 302 it was mounted on top of the thermostat housing in a tee fitting with one of the heater hoses. My problem was that the truck was running rich all of the time. in my climers manual it gave the resistances for the temp sender and mine read when the engine was warmed up the value for 120 degrees. I spliced into the wiring harness to the sender and put a resistor in the plug that had the value for 194 degrees and test ran the truck. it was hard starting when it was cold and ran like you described until it was warmed up. maybe you have a sending unit that is telling the ecm that your engine is way warmer than it really is. worth a try.
Senior User
Joined: May 2003
Posts: 135
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From: Florida
Im in the same situation as of now...
Best way to make sure converter isnt blocked and isnt your problem is to disconnect exsaust from the Y pipe....
Also check to see if your computer isnt grounding out......
I just learned how to do the code test its not hard but I understand how fustratin it is as I myself have the same situation im trying to resolve...
good luck and let me know how u fixed it....
Best way to make sure converter isnt blocked and isnt your problem is to disconnect exsaust from the Y pipe....
Also check to see if your computer isnt grounding out......
I just learned how to do the code test its not hard but I understand how fustratin it is as I myself have the same situation im trying to resolve...
good luck and let me know how u fixed it....
Senior User
Joined: May 2003
Posts: 135
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From: Florida
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Senior User
Joined: May 2003
Posts: 135
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From: Florida
The last thing you hope to go wrong, In tank pump, and The last thing you want to replace in the driveway.......
That was one of the things i checked on mine when it was acting up..
I took off the fuel lines going to the resivior then had a friend crank her over to see if fuel was comming out.....but whats to say that going to tell me the awnswer....
From what I gather the pump in the tank just delivers fuel and the other pump builds fuel pressure ........
That was one of the things i checked on mine when it was acting up..
I took off the fuel lines going to the resivior then had a friend crank her over to see if fuel was comming out.....but whats to say that going to tell me the awnswer....
From what I gather the pump in the tank just delivers fuel and the other pump builds fuel pressure ........
Thread Starter
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Elder User
Joined: Mar 2004
Posts: 500
Likes: 1
From: Penndel, PA
wasn't too terrible. floor jack did the job. and yes, the in tank pump throws fuel at an arbitrary rate. next pump inline builds pressure to the system allowing fuel to travel to fuel pressure regulator which then slows it back down to a rate the fuel injectors can handle.
Senior User
Joined: May 2003
Posts: 135
Likes: 0
From: Florida
So you did it yourself, cool, I thought the ford dealer did it ...They just told you what you need to do...
I got mine now running but its making a popcorn sound out of the exsaust..Howerver i havent done the o2 sensor replacement yet...
I , like you, already replaced several hundred of dollars in parts with some results but not yet to have a perfect running truck......u
I could have switched her over to carb for all the doe.....and at least know what im doing(feel more confident) .......
I got mine now running but its making a popcorn sound out of the exsaust..Howerver i havent done the o2 sensor replacement yet...
I , like you, already replaced several hundred of dollars in parts with some results but not yet to have a perfect running truck......u
I could have switched her over to carb for all the doe.....and at least know what im doing(feel more confident) .......
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