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| porsche 944 turbo - rough idle, and erratic starting https://forums.tipec.net/viewtopic.php?f=25&t=8713 |
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| Author: | mark23rhodes23 [ Tue Jun 08, 2010 7:08 pm ] |
| Post subject: | porsche 944 turbo - rough idle, and erratic starting |
as per title really - don't like the idle - doesn't exactly sound 'sweet'. Rev's fluctuate - more like a hiccough really, but sometimes seems slow to drop from 2000rpm, also occassionally feel the car 'hunting' when you back off the 'loud' pedal - though this seems to have improved with me using the car more. Also sometimes it will start immediately and ranges up to what seems like a long time (worse with a new passenger in car!), maybe up to 4 seconds. background on car: battery very recently changed - it is proper spec bosch battery. starter motor turns the engine at what sounds like a decent speed plugs changed plug leads changed to splitfire new coil lead new dizzy cap and rotor arm earth leads from battery to chassis removed and cleaned, to starter motor, and from chassis to engine battery charges nicely (13.5volts) according to volt gauge on car new bosch idle control valve vacuum tubing has been replaced new fuel filter and fuel lines would it be worth removing the injectors and getting them tested and cleaned? DME? crank angle sensors (the 2 at the top of the clutch housing)? any thoughts and suggestions would be greatly appreciated cheers Mark |
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| Author: | J.J. [ Tue Jun 08, 2010 9:25 pm ] |
| Post subject: | Re: porsche 944 turbo - rough idle, and erratic starting |
If it were mine I'd put it on the dyno & check the fueling. Should cost about £50 to £100 for a diagnostic. But you need somebody that understands these cars & knows what there doing. A new AFM will cost you £150 so if it's something else like a vacuum leak say. Or the fuel pressure reg'. You don't want to waste your money. You don't say where your based. |
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| Author: | Lee 944 [ Tue Jun 08, 2010 9:28 pm ] |
| Post subject: | Re: porsche 944 turbo - rough idle, and erratic starting |
Stockton-on-Tees it says on eBay? |
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