Before posting messages or replies, see the posting policy rules at: www.dmcnews.com/Admin/rules.html To address comments privately to the moderating team, please address: moderator@xxxxxxxxxxx ------------------------------------------------------------------------ There are 3 messages in this issue. Topics in this digest: 1. electrical problems relating to fuel pump From: Joel Pash <joelpash@xxxxxxxxx> 2. Re: DeLorean with twin turbo From: William T Wilson <fluffy@xxxxxxxxxxx> 3. Re: question about cooling fans From: Mike Substelny <msubstel@xxxxxxxxxxxxx> ________________________________________________________________________ ________________________________________________________________________ Message: 1 Date: Thu, 17 Aug 2000 12:59:56 -0700 (PDT) From: Joel Pash <joelpash@xxxxxxxxx> Subject: electrical problems relating to fuel pump Sorry for the long email, but maybe someone can help me. Several months ago my Delorean started to blow the RPM relay fuse (when starting the car) resulting in not starting. At first I thought it was the alarm that was causing the problem (the previous owner had an alarm installed - not very well) so I disconnected the alarm. The problem kept happening, so I drove around with spare fuses as a temporary solution. Last week I was driving and the car died in the middle of the street. This was the first time that had happened - it usually would blow the fuse when I tried to start only. Sure enough the fuse was blown, and the holder was all melted. So I bypassed the fuse by cutting it out and connecting the two wires. I drove the car home no problem. I thought the problem may be the fuel pump drawing too much current, so I replaced it right away. When I tried to start the car, it didn't start again. Here is what I know for sure: a) If I open up the RPM relay fuse and force the solenoid inside to contact, the fuel pump runs. The solenoid does not move however, when I turn the key (it is obviously supposed to.) This relay is working because I have two of them and one of them is brand new. b) I thought that I had traced the problem back to the main fuel relay being blown. So I replaced that. I tried to start the car but I noticed the main fuel replay fuse (fuse #1) was blown. So I replaced that. The car started and ran for about 5 minutes, then died. c) The fuses in the fuse box are all higher amp fuses than they are supposed to be. I just noticed this yesterday when reading the workshop manual so I replaced them. d) Most of the relays in the car are Bosch, so I understand this means they have been updated at some time. I have a few thoughts. First of all, I need to determine what is causing a short in my electical system. I originally thought it was the fuel pump but it is obviously not that because that has been replaced. Perhaps it is the fuel filter? Second, why were all the fuses wrong. Perhaps the previous owner replced 20 amp fuses with 30 amp fuses, 10s with 20s, etc, to stop them from blowing. Perhaps this is why relays may be getting fried. The thing that concerns me is that before I was just blowing the RPM relay fuse. Now I am not even blowing fuses, just other stuff. And the car doesn't run. Before I changed the fuel pump it did. (I also tried putting back the old fuel pump, but the same problem.) I have gone through all of the wires with a volt meter and I can't find any wires that are not conducting. Maybe I am doing it wrong? Does anyone have any ideas? Thanks very much. Joel __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ________________________________________________________________________ ________________________________________________________________________ Message: 2 Date: Thu, 17 Aug 2000 14:59:01 -0400 (EDT) From: William T Wilson <fluffy@xxxxxxxxxxx> Subject: Re: DeLorean with twin turbo On Wed, 16 Aug 2000 bluevelvet420@xxxxxxx wrote: > 0-60 in 4.2 seconds, finally the deloreans performance matches its > appearance. i wonder if you got oneof those NOS crate engines and put > on the turbo manifold twin turbo how fast it would go.... -greg Even #502 isn't that fast. If it manages to produce 250HP (which is a reasonable guess, assuming the engine has some upgrades besides just the turbos), that would be enough to make the car accelerate 0-60 in under 6 seconds. That's pretty speedy and faster than any $25,000 car of the period- although, of course, the price would probably be much higher for the turbo version. To go 0-60 in 4.2 seconds, the DeLorean would require approximately 400 HP. I think that is beyond the capabilities of the PRV in street trim. ________________________________________________________________________ ________________________________________________________________________ Message: 3 Date: Thu, 17 Aug 2000 16:52:17 -0400 From: Mike Substelny <msubstel@xxxxxxxxxxxxx> Subject: Re: question about cooling fans brownalizat@xxxxxxxxxxxxxxxxx wrote: > My husband and I noticed that our 81 delorean VIN 07003 which has always run > cool, overheated last nite. The cooling fans would not come on even when we > replaced the coolant (which was empty). Jeff let it run for a while and > noticed no leaks but the fans would not kick on. First, find out what caused the initial overheat. This can be an electrical problem, the simplest would be if the fan-fail bypass came loose. Look in the DMC News (below) for its location in the relay compartment. The problem might also be a bad temp sensor, or a blown fuse. It is less likely, but still possible, that this was caused by air in the system. Perhaps you were low on coolant and the fan control sensor was dry. This happens sometimes. Perhaps when you refilled it with coolant there was enough air trapped that the sensor is dry now. This also happens sometimes, although it can be cured by bleeding the system (described in back issues). Maybe you had both happen to you, but the odds are against it. I think you should look for an electrical problem, starting at the fan-fail bypass. Start by going here: http://www.dmcnews.com/zine.html And download the first issue of the DMC News 'Zine. It had instructions and a diagram for fixing many cooling fan problems. - Mike Substelny VIN 01280, 7 years ________________________________________________________________________ ________________________________________________________________________
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