964 won't start after it's warmed up.
Discussion
Gentlemen.
I am in need of some assistance. I've had my 1990 964 Tip for four months now, during this period it has failed to start three times after it has warmed up. This morning I drove for about 45 minutes then parked outside the house, I returned to the car 10 minutes later and it won't start. The immobiliser disarms fine, I turn the ignition key and nothing, the starter won't crank at all. If you leave the car for a couple of hours it starts first time. Any ideas are most welcome. I had to walk to work today after a session with my physio on my back, I'm not a happy Bunny.
Kindest Regards
Tod
I am in need of some assistance. I've had my 1990 964 Tip for four months now, during this period it has failed to start three times after it has warmed up. This morning I drove for about 45 minutes then parked outside the house, I returned to the car 10 minutes later and it won't start. The immobiliser disarms fine, I turn the ignition key and nothing, the starter won't crank at all. If you leave the car for a couple of hours it starts first time. Any ideas are most welcome. I had to walk to work today after a session with my physio on my back, I'm not a happy Bunny.
Kindest Regards
Tod
Sounds like it might need to go 'under the hammer'. I had same probs with my 91 C4 but at service the ECU was reset so the engine idle speed was re-calibrated. It's a commong problem but one which can be easily remedied without replacing parts. Suggest you contact your Porsche specialist to see if he can use his Bosch hammer to reset the ECU.
Having re-read original post not sure if above applies noting that starter won't crank.
Having re-read original post not sure if above applies noting that starter won't crank.
Edited by Ravi944 on Monday 11th June 14:12
I had this problem on the 964 I once owned same year as well,
I was shipping it to Spain and stopped off at some friends before boarding the boat, It had never happened up to that point. We said our good byes and got in turned the key nothing tried again nothing,after an hour of worry
suddenly it started and we got to the boat in time. On arriving in Spain same problem ended up last off the boat.
Cut a long story short it continued to do this whether the engine was cold or hot but only sometimes.
I got a local garage to disconnect the emobiliser and never had the same problem again.
Let me know if it works for you.
I was shipping it to Spain and stopped off at some friends before boarding the boat, It had never happened up to that point. We said our good byes and got in turned the key nothing tried again nothing,after an hour of worry
suddenly it started and we got to the boat in time. On arriving in Spain same problem ended up last off the boat.
Cut a long story short it continued to do this whether the engine was cold or hot but only sometimes.
I got a local garage to disconnect the emobiliser and never had the same problem again.
Let me know if it works for you.
Ravi944 said:
Sounds like it might need to go 'under the hammer'. I had same probs with my 91 C4 but at service the ECU was reset so the engine idle speed was re-calibrated. It's a commong problem but one which can be easily remedied without replacing parts. Suggest you contact your Porsche specialist to see if he can use his Bosch hammer to reset the ECU.
Having re-read original post not sure if above applies noting that starter won't crank.
Ravi, how did the clay bar aquisition go.? Having re-read original post not sure if above applies noting that starter won't crank.
Edited by Ravi944 on Monday 11th June 14:12
Ravi944 said:
Sounds like it might need to go 'under the hammer'. I had same probs with my 91 C4 but at service the ECU was reset so the engine idle speed was re-calibrated. It's a commong problem but one which can be easily remedied without replacing parts. Suggest you contact your Porsche specialist to see if he can use his Bosch hammer to reset the ECU.
Having re-read original post not sure if above applies noting that starter won't crank.
Surely you can re-set the ecu by disconnecting the battery for a approx 10 mins, then re-srating the car letting it idle and settle itself down for another 10 mins before revving engine. Having re-read original post not sure if above applies noting that starter won't crank.
Edited by Ravi944 on Monday 11th June 14:12
clubsport said:
Ravi944 said:
Sounds like it might need to go 'under the hammer'. I had same probs with my 91 C4 but at service the ECU was reset so the engine idle speed was re-calibrated. It's a commong problem but one which can be easily remedied without replacing parts. Suggest you contact your Porsche specialist to see if he can use his Bosch hammer to reset the ECU.
Having re-read original post not sure if above applies noting that starter won't crank.
Surely you can re-set the ecu by disconnecting the battery for a approx 10 mins, then re-srating the car letting it idle and settle itself down for another 10 mins before revving engine. Having re-read original post not sure if above applies noting that starter won't crank.
Edited by Ravi944 on Monday 11th June 14:12
Kurgen said:
Ravi944 said:
Sounds like it might need to go 'under the hammer'. I had same probs with my 91 C4 but at service the ECU was reset so the engine idle speed was re-calibrated. It's a commong problem but one which can be easily remedied without replacing parts. Suggest you contact your Porsche specialist to see if he can use his Bosch hammer to reset the ECU.
Having re-read original post not sure if above applies noting that starter won't crank.
Ravi, how did the clay bar aquisition go.? Having re-read original post not sure if above applies noting that starter won't crank.
Edited by Ravi944 on Monday 11th June 14:12
Resistance can increase as the temperature rises, hence why the starter won`t crank when it gets hot. Things like the earth strap can also give the same symptoms and are affected by heat / increased resistance.
Couldn`t have been injectors, head gasket etc as the engine wasn`t turning over, similarly all the DME controls is the ignition & the fuel pump, not the starter.
Hope that helps.
Henry
Couldn`t have been injectors, head gasket etc as the engine wasn`t turning over, similarly all the DME controls is the ignition & the fuel pump, not the starter.
Hope that helps.
Henry
The old leaking inlet manifold gasket gag.
Fallen for that one myself.
The bill wasn't from a little firm 10 miles out of Tunbridge Wells was it ?
Starter motor AND distributer, two interconnected failure that just seem to happen at the same time, every time.
Im not buying it mate.
If it was the starter, which can be bought for £159 that failed, whys the bill 1250 ?
If it was the distributer, these are £270. Unusual for both to simultaneously go.
The old inlet manifold gasket leaking is just padding IMO.
Pull a pipe off on the induction side of the engine, same thing.
Big bills for fvck all.
Fallen for that one myself.
The bill wasn't from a little firm 10 miles out of Tunbridge Wells was it ?
Starter motor AND distributer, two interconnected failure that just seem to happen at the same time, every time.
Im not buying it mate.
If it was the starter, which can be bought for £159 that failed, whys the bill 1250 ?
If it was the distributer, these are £270. Unusual for both to simultaneously go.
The old inlet manifold gasket leaking is just padding IMO.
Pull a pipe off on the induction side of the engine, same thing.
Big bills for fvck all.
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