Questions & Answers for: northstar vacuum leaks

...Northstar and approx. 70,000 miles "Service Engine" display has been staying on most of the time. Coinciding with that display the transmission shifts abruptly. A transmission shop said "your ...

...northstar low idle after warm up. low rpms from 450 -700 after warm up. must drive with map unplugged so car will not stall or engine shaking at a stop. iac was covered in medium carbon , cleaned the ...

Northstar V8, that over heats and idles high (around 2000+), i think the two problems are connected, and are caused by some sort of vacuum leak, how would i find and solve this problem? back probe the

northstar motor If you are referring to the ignition timing,it is not possible as it is all controlled by the computer. If you are having problems(rough idle etc...),then you most likely have a sensor

...Northstar intake cover as I believe it serves no function other than cosmetics but wonder if this is a factor its a factor put it back on. the big brain The vacuum diagram below may help you identify ...

northstar v8 and pools on the top of the engine. From what I can tell, the oil is being drawn into the air intake manifold via the PCV tubes. This vehicle doesn't have a PCV valve on the valve covers.

...vacuum hook up an that is were i hear wissuling the leck Northstar engines are known for intake manifold leaks and also for intake manifold coupler leaks.  I do not know what else you could be ...

northstar vacuum leaks i have a 2000 deville dhs cadillac and its been acting up it starts sputtering the rpm gauge drops and picks back up if i let it idel for a little while it stalls out and dies ...

northstar, the engine will start but stops the second I take my foot off the gas pedal. and the last few days every time I look at the MPG it reads less every day. going from 16mpg to 11.2 mpg in just

...northstar. Check engine light on and running rough. Mechanic said running lean on both banks Drives just fine at highway speeds. Only at stop lights and idle will it shake. Have the fuel pressure ...