my 97 is running bad very bad and i wanted to know when i pull the plug to my pass side valve cover it changes nothing both plugs nothing does this mean that i am running on 4 cylnders and why i have not pulled the cover and looked yet i wanted to get some imput before i started to tear her down and what will i need for tools anything special thanks guys

 

That is precisely what that means. Since it's unlikely that four injectors would fail simultaneously I'd say you are looking at a fried injector harness, but it could also be the injector driver module. Nothing but basic hand tools are required to remove the covers, harness or IDM.

 

an ohm meter is your best friend at this point. you need to get an ohm meter and test each injector

the velve cover harness will have 5 pin each connector.

so it looks like this

1 2 3 4 5
- - - - -

pins 1 and 5 are glow plugs they should be around 2 ohms if they are good. if they are over that either the harness or plug is bad. this will not be related to you running bad unless on plug melted and took the other pins out.

pins 2 and 4 are the low side injector wires. one going to each of the two injectors that plug connects to.
pin 3 is the high side wire that is common to both injectors.

to tes the injectors/harness place the ohm meter on 2 and 3 , then on 3 and 4. the readings should be around 3 ohms. up to 5 ohm is ok. anything more and you ahve injector/harness issues

Since all four seem to be not firing it could easily be the IDM has gone bad

 

will any 7.3 idm work ie e350

 

E350 is better. It is 110 instead of 100. Boosts your fuel pressure and throttle response a little.

 

yes any IDM will work from 94.5 to 03 van and pickup. there are three different one with 3 different voltages but they will interchange with really no issue. I would not want to put a 95 IDM into a superduty though. its kind of a step back in performance. but for testing purposes it will work fine. But in your case you can't go backwards so any one will do.

 

Thanks TJ I didn't know that about the IDM. How much are those parts?

 

used you can get them for around $200 if you keep your eyes peeled on ebay. New I think they are $350 or so. Never had to buy one wo I am not sure what they run. I was looking for a spare on ebay a while back but they never went cheap. Just search IDM on ebay. many times people list them as a PCM or ECM also but they are not and those usually go cheaper since people don't really know what they are looking at.

 

well after much searching i found a 97 E350 IDM at the bone yard today what a steal at 35 bucks i will see tommorow if in deed that is the problem but if not i have an extra idm to play with and mod

 

wow thats a great price! all the cheap bone yards around here are too cheap to buy powerstroke era vehicles! good find!

 

Same here, the day one does show up I will be in their like a dirty shirt

 

well i would just like to thank cookie88 and the man with all the right info all the time tj beggs i bow down to you my friend you art the god of the 7.3 powerstroke and i thank you again oh buy the way it was the IDM

 

Glad to help! that was relatively painless for you also since you got such a great deal on that IDM! good find.