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[ians]

With the original cam sensor, apart from the EML, is it running ok?

[JueV6]

apart from being in limp mode, 4500 rpm,  yup tick over is fine, ICV has been cleaned, plugs, leads, Engine had a sump up rebuild, new shells (ends and mains) crank polish etc.

After it was all bolted up, turned the key and it started on the key, first time. all good except EML :-/

[FRE07962128]

apart from being in limp mode, 4500 rpm,  yup tick over is fine, ICV has been cleaned, plugs, leads, Engine had a sump up rebuild, new shells (ends and mains) crank polish etc.

After it was all bolted up, turned the key and it started on the key, first time. all good except EML :-/

From all your answers it would seem all mechanical is ok, but it is an electrical / engine management problem.  With this mind have you checked that no control boxes were hit / damaged when you re-installed the engine?  It is all too easy to damage delicate electrical components / wiring when undertaking this operation!  How is the ECU?

(please excuse me if I am teaching my grandmother to suck eggs, or simply repeating the obvious, but I am just trying to eliminate all the possibilities as I have had to do in the past!)

[albitz]

a trip to mark dtm or the boy for a tech 2 session might save you a lot of time /grief in the long run. :-/

[JueV6]

any suggestions are welcome Lizzie, I think I have check everything possible without getting it put on a tech2

and Fred117 was on a very tight bugdet on the rebuild, and thats why it took a while to rebuild. so stealers prices for a diagnostics check is out of the question atm.

[FRE07962128]

any suggestions are welcome Lizzie, I think I have check everything possible without getting it put on a tech2

and Fred117 was on a very tight bugdet on the rebuild, and thats why it took a while to rebuild. so stealers prices for a diagnostics check is out of the question atm.

Too true they are something you don't want to pay after saving on the rebuild itself!  I have avoided them like the plague, unless my company was paying for it on my 100k+ per year cars!

[TheBoy]

was the new sensor new? genuine gm?

[rickyboy]

The rev limiter at 4500rpm is a dead give away for cam sensor fault.  Get another one it's definitely faulty or not fitted correctly.  When fitting the cam sensor make sure the sensor is spottlessly clean along with it's mating face and that the bolt is torqued up correctly.  

[JueV6]

was the new sensor new? genuine gm?

Yes TB it was / is.

The rev limiter at 4500rpm is a dead give away for cam sensor fault.  Get another one it's definitely faulty or not fitted correctly.  When fitting the cam sensor make sure the sensor is spottlessly clean along with it's mating face and that the bolt is torqued up correctly.  

engine was totally cleaned before the rebuild and rebuilt completely before putting it back in. The only things that needed to be put on as it was put back in was the aircon pump, the exhaust downpipe and starter. and the connect all the wiring and plumbing.
 :-/

[TheBoy]

either faulty sensor then, or prob with its wiring

[pete1666]

Hi have you changed/checked  the fuel filter, what condition are the injectors in? or maybe the fuel pump  might be dying.

Pete