Your car won't even idle if you disconnect the MAP, I know because I inadvertenly connected my A/C controls where the MAP goes on the back of the manifold - It sounded like it had a really big cam and would'nt stay running for more than a couple of seconds

 

dude try autozone or one of those places a standard 1 bar map should be like 15$'s

 

hey never said the mechanic was right if just rather the only thing I could think of what was going through the mechanics mind which I say is wrong just like you.

thank you for taking my comments without getting pissy. I'm in a good mood and this is just the way I am. like to give people crap. and the tantrum part came from the sound of frustration with the added ?!?!?!?!?! on the end. just sounded ish. god someone needs to me

 

I've been known to break some stones. Some people can't take it, though.

 

rx7, what ever happened to Stu LMAO? He still around?

 

Good call..lol

I'll call them tomorrow and see what happens.

 

well its not the MAP sensor...

gotta check timing and EGR

Quick question. My mechanic (if you could call him that) when he took out my AIR injection system, just plugged the vacuum line that was going to it. Would this cause any problems?

 

If its plugged right, no that is not a problem.

 

If you removed all of the AIR and EGR stuff, you'll need to redo your PROM. The computer still thinks its there and offsets the o2 sensor reading by .100V when the computer thinks its turning the AIR pump on. I haven't seen this addressed yet, thought I'd mention.

I haven't seen anything that mentions reprogramming around the EGR. What I've read suggests that the EGR is only for the control of NOx emissions, where the AIR pump puts in more oxygen to help out the Catalytic converter. Could anyone else elaborate a bit more?

 

I've had the EGR and smog pump off my car almost as long as I have had it with no chip tuning. The only thing that has happened is the SES light will come on after cruising on the highway and the code reads bad EGR. The EGR on my truck has been non-functional for the last 70k miles and same thing, just the annoying light (it's a work truck and didn't want to pay $150 for a new one ). The one in my Navigator went, but the wife made me replace it because she was "concerned", that one was $250 .

 

Not all of was taken out. Just the pump off the accessory belt and the tubes that went into the old manifold.
The EGR is still functional and hooked up. Could this be a problem?

I've changed the air filter, fuel filter and MAP sensor..still same problem. I have yet to check the timing...maybe faulty injector?

 

Are you sure there is no vac leaks where the EGR connects to the intake manifold?

 

None that I've seen but I'll take a closer look now that you mentioned it.

 

So after being thoroughly stumped and extemely aggravated at my prior mechanic, I decided to find an ASE certified mechanic to fix my problem. I took it to Motor Masters in Rockaway, NJ and the guy Mike is awesome. He kicked my timing ahead about 3 degrees to help with the added flow. He checked over everything and basically once the car warms up and goes into a closed loop, the 02 sensor causing the car to run lean because my air injection system is no longer there. So I have 2 options, put the air injection system back on, or burn a new chip for the ECM to correct the false readings. If my old mechanic still has my parts I'll probably just put the air pump back on. If he doesnt and I need all new parts, then I'm sure its just cheaper to burn a new chip.
Just wanted to update you guys in case you were wondering.

 

how are you gonna hook up your air system when the headers dont have the hook up for the air system. you would have to cut the piece off the stock manifold and weld it into the header on the passenger side to hook it up. I havent had any problems with my headers being on my 3.1l.

 

a bung needs to welded to thread in the tube going from the air pump.

He said it not a problem..but labor would cost more than burning a new chip.

Did you take out the air pump? I have the headers going to a high flow cat and 3" american series flowmaster. I think a combination of the mods plus the air pump being gone are causing a ECM issue. There is nothing else to explain it. Everything else checks out: EGR, MAP, injectors, timing, transmission, all sensors, plugs, wires. I mean what else could it be but the ECM?

You guys figure it out and ill thank you for life.

 

hey man keep me updated on how much it costed to have that piece welded on to get the air pump to work and how much better it runs cause im am a short drive away from whatever shop your taking it to.

 

I was looking at the air pump on my new car. The mount on the back of the pump looks like the same mount for the V6 egr to intake pipe. If so, that would be super easy to fab up that style of mount and find gaskets.

Just an .02 for someone to look into.

 

Most likely you need some chip tuning. With the headers in place the VE of the engine has been increased. There are tables in the chip that define the engine's VE at multiple MAP & RPM points. These values are no longer correct.

While in closed loop the feedback from the O2 sensor can correct for some of this. But not all. Which is why it started to run better with the O2 sensor connected.

RBob.

 

Yeah i definitely will. They are closed for this weekend...usually open but they have their sons graduation so Mike will get back to me Monday and I'll let you know how it goes.

Yeah its not very hard, he said he can do it but its the labor involved I would rather not pay for. It might just be alot cheaper to get a chip burned since I need tuning anyhow.

Yeah your exactly right. We'll see what happens monday.

 

I need a chip burned and don't have the eqipment nor time/patience to do it. Can anyone burn one for me or point me in the right direction? I'll give you the list of modifications to take into account and I'll pay you of course.

Reply here or PM me or email me AdmAnt13@optonline.net
Let me know ASAP.
Thanks
Adam