I have had my car not re-start twice when it’s been getting hot from booting it or getting stuck in traffic. Yesterday when I was driving to get some new tyres, I was following my mate who was flat out everywhere showing off in his Astra GTE. I needed to boost a bit to keep up, when I stopped, I idled it for about 2 minuets before tuning it off. I had to restart it to drive into the garage and all it did was turnover and there was a lot of fuel coming from the exhaust (over fuelling). After about 30 minutes it started on the button and was fine. Does anyone have any ideas or have had this problem before.

 

P.S. blow away a Supra 3.0l Twin Turbo last night, He He He He He

 

Richie.....

 

 

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I'd check & clean my engine temp sensor, the big yellow one

 

 

 

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1990 300ZX 2+2 TT (Z32) Auto Stage III

1992 300ZX 2+2 TT (Z32) Manu Stage VII

1992 Dodge Stealth 2+2 TT AWD Manual

 

Internet Z Car Club #1000

TwinTurbo.Net #4

Heat soak! All turbo cars suffer really badly with it. Knackers the wiring over time. Hence why you can start it after a substantial cool down period. My Supra used to suffer with it, my Saab used to and my Brothers Saab the same.

 

 

 

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I thought heat soak was about vapourisation of fuel in the lines and carb ? If it is then it shouldn't be as much a problem with a fuel injected engine. Or have I lost the plot here ?

All I know is that the Summer months were worse for obvious reasons. If I cained the Turbo beast(s) shut them off and then bought a packet of fags and re-started they were not happy at all!!! Rev 'em a bit and all would be fine.

 

Fuel and electrics getting absolutely baked under the bonnet with the engine off and the build up of intense heat with nowhere else to go bar through your wiring etc.

 

Lovely!

 

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[This message has been edited by Timmy_Turbo (edited 05-03-2002).]

This was the first sign of my PTU failure.

After a long drive, left it for a few minutes and it wouldn't start.

Leave the bonnet open for 5 mins and all OK.

 

It’s not the ptu because it’s been changed.

I was thinking that it might be just to do with over heating.

Question?

If I put bonnet vents on the car which are quite large, when the car is stopped the V fan will push the hot air out of the bonnet, will this solve the problem?

 

Richie..

 

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Originally posted by richie300zx:

It?s not the ptu because it?s been changed.

I was thinking that it might be just to do with over heating.

Question?

If I put bonnet vents on the car which are quite large, when the car is stopped the V fan will push the hot air out of the bonnet, will this solve the problem?

 

Richie..

 

I'm going for the Astra GSi vents that MAC1 has, reason? Because they are designed to force air out which not all bonnet vents actually do!

 

Most are more for effect than intended purpose.

 

 

 

 

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The GSi vents actually draw the hot air out while your moving and the other real advantage is that they have a little drip tray like jobbie inside, which prevents your engine bay filling up with water when you leave the car parked in the pouring rain. (I know this because I had them on my ...... Astra GSi !)

You're right Andy, I know this from the Macca to be true! LOL

 

 

 

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Ty this, upon reading the bible last night(300zx entusiast's companion) I saw this and thought of you ie.hot starting

I think it is the funy thing that the non turbos do not have. it is on the left hand bulk head at the front just above the washer botle.

This can be a problem related to the fuel temp sensor and the PRVR valve.

When the fuel is hot, the PRVR (Pressure Regulator Vacuum Release) valve should open the fuel pressure regulator vacuum line to the athmosphere.

This will increase the fuel pressure, thereby preventing vapour bubbles building up inside the fuel hoses.

 

Try disconnecting the pressure regulator vacuum hose, when the engine is not starting when hot.

 

Maciej

Trouble hotstarting makes me think of the fuel pressure regulator that sits on the plenum towards the back. Try replacing with a known good one.