Please help!

[CMprotege]

I have already posted this on another part of the forum and I really need this question answered soon. So my car keeps giving back a code p0660 I have ran the diagnostic many times. I have installed new spark plugs, cleaned the wires, cleaned the throttle body, check the coil packs, and everything is fine. However, when running a diagnostic on my car the machine ran back a code p0660 saying open bank 1 on intake manifold. With this code I figure it directly goes with an issue I am having which is very sluggish acceleration. It honestly, feels like something is holding the car back when accelerating. The car overall runs really well and has no other problems besides this, but I hate my car having codes as well as the sluggish acceleration. Also many say this issue is caused by the VICS or VRCS solenoid (White Connector) however, I have no idea how to tell this theory and after calling my local dealership to find it to be a $125 part I am reluctant to just replace it. So PLEASE help me any advice is greatly appreciated!

I have asked the dealership and many shops and they all say without a $100 diagnostic fee they will not look at it. So since I had a friend use their diagnostic machine and I could do the work myself why pay them? So I need help fully making sure what it is before I start fixing things. The car is a 2003 Protege ES 2.0 DOHC 16 Valve 5 speed manual.

 

[tweety2300]

P0660 is the Vic's solenoid but it will not make the cel come on. If the cel is on you have another problem. Vic's does nothing untill 5200 rpms and then it opens different runners in the intake manifold. It's not a huge difference in power

 

[dacquesta1]

if the valves are stuck closed it will run sluggish. check the vac lines for the solenoid and the vac line for the valve. rev the engine, the plunger should open.

 

[CMprotege]

Yea that is the weird thing the CEL doesn't come on and the car runs relatively fine, but when accelerating or if the engine is in a low gear and idling low like up a hill etc it will accelerate sluggish. I want this to be fixed because something is wrong and I like my car 100% because it's my daily.

 

[CMprotege]

if the valves are stuck closed it will run sluggish. check the vac lines for the solenoid and the vac line for the valve. rev the engine, the plunger should open.

What signs will I notice when the plunger opens? If I am reving the engine in my drive way nothing happens. In fact I've tried to replicate this problem as well as a random engine rattle (these two aren't associated) but I cannot seem to get the results. Like I said to Tweety there is no CEL and it happens under accelerating even when I rev below 3500 which I typically do.

 

[tweety2300]

It may be stuck open then, only way to tell is rev it and see if the bar moves or not. I zip tied mine open one day to see what it would do and it made no difference at all...

 

[CMprotege]

Well if it doesn't make a difference what would cause a shutter affect when I accelerate? It's like the car shutters and then starts to accelerate. People have said this to be coil packs. Is this true?

 

[tweety2300]

Could be or your car may react different as it has a different tune

 

[CMprotege]

Could be or your car may react different as it has a different tune

When you say different tune are you referring to a specific setup? My car engine wise is relatively stock aside from air intake and ngk spark plugs. Everything else is oem even the spark plug wires etc. In all the reserach and advice I have gotten the air intake wouldn't cause this problem and the spark plugs didn't because it was doing this before I installed them. In fact that was the first step I took in hopes of trying to fix the problem was looking at what cheap things I could replace to fix the issue. This was before my friend ran a diagnostic on the car to find the p0660 code though.

 

[tweety2300]

I have an mp3 my ecu has a better tune and I don't have Vtcs. Easiest way of finding out is swapping the Vtcs and Vic's solnoids. Vtcs is only for startup emissions and stays open by default when you swap them your cel will come on if it's the solnoid that's bad but the Vic's will be good if it runs fine it's your Vic's that's causing it if not you have another problem

 

[njaremka]

if the valves are stuck closed it will run sluggish. check the vac lines for the solenoid and the vac line for the valve. rev the engine, the plunger should open.

if the VTCS valves are stuck closed, the car won't rev worth nothing. however, his code is for VICS.

 

[tweety2300]

Vtcs valves are open by default if he were to switch them with a bad solnoid they would remain open and just not close

Vic's and Vtcs solnoids are interchangeable

 

[dacquesta1]

They are closed by default. If you hook it up directly to vac and rev it they open. But vtcs is wrong code. I'm not 100% sure about what Vic's is since I didn't have it with my 1.8l manifold

 

[CMprotege]

Vtcs valves are open by default if he were to switch them with a bad solnoid they would remain open and just not close

Vic's and Vtcs solnoids are interchangeable

Yea this is what I was thinking because they look exactly the same one has a green connector coming from the car and the VTCS has a white. You think if I unplugged the VICS and plugged it into the VTCS slot and vice versa for the other to see if it would run the code for the VICS malfunctioning? Seems like an easy way to test for a malfunction. Not sure if it is safe or not so what do you think?

 

[Broffybakes]

Need help urgent ? I have a 1999 mazda familia with the zl-ve engine, its was automatic and i change it to manual (problems):i am missing my airflow box the part that the filter goes on the bottom half (it was stolen) it had a burnt knock sensor ,blown head gasket around the compression rights,and the gas needle moves every move i make depends on the turn are what ever i have a problems on hill (not my driving skills)when the gas is low are on the first mark,and it has a flat spot on move off if i push in the clutch and rev it will take of then die down immediately then pick back up again. Can anybody shine any light on this matter are know how i should ask?