Hello I installed an HO intake manifold last saturday but after a week of driving I am having trouble with the car. It ran great for a week but now it is very hard to start and when it does finally turn over it bearly wants to run but then it will idle fine untill I give it gas, then it will stall and sputter and try to die. It does not throw a code. I am having a bad time with it and I was wanting some advise. I think that it is the gasket that I used for the mani that is causeing it, I just wanted to make shure before I go tearing into it and that not being the problem. also i am using a 2.4 tb and an egr simulator and I have triple checked the vacuum lines and sensors. any adive would be great.
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unplug the EGR sim and see if that does anything.
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spray cab cleaner around the gasket areas, if you have a vacuum leak there it will raise the RPM when the extra fuel(carb clean) is sprayed in. It shounds like a vacuum leak to me. i would just spray the whole plenum area.
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Hmm... I'm not really a performance guy but i'm a good drivabilty guy. Does the Ho plenum not have egr and is that why you are using a simulator?
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the HO does not have an egr valve hook up and yes that is why I have a simulator. I just pulled the mani off and I am going to try a new gasket.
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update me please my curiosity has been sparked
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my buddy had the same problem. he just had two vacuum lines switched around. a two second fix, and it ran fine.
good luck.
Portage, MI
well I tried switching vaccum lines around too but sadly it did not help. for some reason it took me a long time to install it but only about 15mins to pull it, I guess its cause I knew how everything went. I will try to install it again tomarrow and see what happens, thanks.
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I know this sounds crazy... but switch the #2 and #3 injector plugs around. This happend to me and I ran it down to that, switched them and things were perfect.
96 All motor 5 Speed Z24, Best time 15.97@86MPH
I didn't take the injectors out at all, I didn't have to so I didn't. was I supposed to??
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