Engine shutoff while driving?, Yes, it had half a tank of gas. |
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Engine shutoff while driving?, Yes, it had half a tank of gas. |
Ecterg42 |
Jul 10 2022, 12:08 PM
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#1
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Newbie Group: Members Posts: 8 Joined: 16-July 21 From: Milford, PA Member No.: 25,730 Region Association: North East States |
Hi fellas,
I had been driving my 75 2.0 FI on the highway for 4 hours on a hot day, with a couple of bio-breaks. After the last stop, while accelerating onto the highway, the engine shotdown. Stopped, checked usual suspects and after 10 minutes it started and I was on the road again. 15 minutes later I when through an interchange onto a different highway, and during acceleration it shut down again. Weather really hot now. This time it would not start again, cranked but was like it was out of gas. Fuel pressure was 30psi. Oil temp was 180 - 200 and the level was good. An oil cooler is mounted in frunk floor where A/C was. Could the heat from the oil cooler have caused the fuel pump to vapor lock? What other sensors or devices could cause the engine to just shut off like that? Car flat-bedded home,(AAA-yea). The next morning at home I gave it a try and it started right up and ran just fine. Thanks, Greg I added a photo of the frunk showing position of oil cooler to fuel pump. Attached thumbnail(s) |
emerygt350 |
Jul 10 2022, 05:38 PM
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#2
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Advanced Member Group: Members Posts: 2,141 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
I doubt vapor lock if its moving but it could be. I wonder about a cooked coil?
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mepstein |
Jul 10 2022, 08:11 PM
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#3
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914-6 GT in waiting Group: Members Posts: 19,313 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
I doubt vapor lock if its moving but it could be. I wonder about a cooked coil? Mine used to stall out at 60mph. Vapor lock. I was at an event in Georgia in Bob Hill’s/Saigon ‘73-2.0. He had it on the drive down and then multiple times on the group ride. First we stalled into a parking place for lunch. Then after lunch it started again about an hour in. We had to get a spray bottle of water and spray down the fuel pump. It would last for 15 minutes and then repeat 4x to get home. He moved the fuel pump to the front and that fixed it. Porsche had a service bulletin on moving the pump. I’m not saying that’s the only thing it could be but it sure fits. |
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