Bad!

[SHOguy 92]

So lately my cars been misfiring, idling high. I replaced the TPS, plugs, plug wires, MAF, clean IAB, change electric solenoid on end of IAB, DIS, and DIS thing on side of the intake. I figured it was electric sensor of sorts. But today I put in the Bosch Platnum 2's. I pulled out the old plugs and the ends were TOTALLY white, gave me a bad feeling. So my guesses are, clogged fuel filter (got a new one I check tomorrow when I put it in), bad fuel injector or a bad fuel pump

I can granny the car up to speed, or up in rpms, as long as it is gradual. In 5th gear I can stomp on it and nothing bad happens. But in any other gears I barely get on it like at all, and it bucks liek crazy and rpms drop up and down.

 

[sdpatt]

I'm not sure where you are getting your diagnosis. I would think a significant vacuum leak could be a cause especially with the high idle speed. Check the link below for a simple read on plug appearances. Those Bosch Platunum 2s are NOT the right plug for the engine. Get 'em out of there.

http://www.buckeye-illinois.com/sparkplugs.htm

 

[SHOfun 93]

That link is good stuff Scott! Added to my favorites!

 

[SHOguy 92]

Thanks Scott, now how do I go about checking for leaks. Running soapy water over the lines? Or is that a bad idea?

 

[91 SHOplus]

That link is good stuff Scott! Added to my favorites!

As usual, Mr. "P" comes through with some awesome info for us. Big for you, Scott.

Shoguy 92, do you have a CE light, or have you pulled any codes?

 

[Camarok]

fuel filter....?

 

[SHOguy 92]

Could it be the CPS?

 

[sdpatt]

Could it be the CPS?

Just plain no. When the CPS fails, there is no spark. Just like you turned off the ignition key because the DIS thinks the engine has stopped turning. There is no signal that teh crank is spinning so there is no spark signal generated.

Inspect for damaged hoses around the intake. If you can, remove and plug one connection at a time. The CANP hose and the main vacuum tap on the passenger side rear of the intake plenum are two possibilities for this test. Also check the fuel pressure regulator hose on the passenger side interior of the front plenum to the fuel pressure regulator. Check the connection to the secondary vacuum accumulator on the rear intake plenum and the outlets from the accumulator.

You don't want to suck soapy water into the intake. That mixture is usually used to check for escaping pressure, not a vacuum leak.

 

[SHOguy 92]

Yeah I figured soapy water is a bad idea, heard of using starting fluid. Oh tonight I just noticed my cruise just so happens to no longer work, thats another hint towards a vacuum leak. I'll have to check those hoses, any recomendations on how to do that?

 

[masho95]

Yeah I figured soapy water is a bad idea, heard of using starting fluid. Oh tonight I just noticed my cruise just so happens to no longer work, thats another hint towards a vacuum leak. I'll have to check those hoses, any recomendations on how to do that?

If your cruise control doesn't work, check the black cruise control line that clips onto the throttle body. It's more common for that to just fall off.

 

[sdpatt]

The vacuum supply for the cruise is branched off the main vacuum distribution header - a small, plastic tee located above the brake booster near the firewall. The supply for the manifold comes from the large vacuum line tapped into the rear face of the back intake plenum near the passenger side.

If the cruise dosen't work because of the vacuum leak, there could be other systems not functioning properly due to the leak in addition to the engine running very lean.