Question about 1991 Audi 100

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No start when my 5 cyl is warm she won't start(fire) Turns over fine but I have to let her sit overnight then she starts even though the belts squeal for a minute and runs great until I shut her off. Then she turns over but not even close to firing

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This sounds like a computer issue or rotor issue- it could be the pick up in distributer electronic pick up in distributer- gets hot then signal won,t travel- cools down then o.k

Posted on Sep 27, 2008

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Can't find the source of the squeal


Year make and model ??
The belt could be glazed and slipping even if it is tight.
You could have a weak belt tensioner too.
The noise when the ac or heat is turned on can be the extra load from the ac compressor or the alternator. The compressor cycles on and off especially in defrost mode.
The load from the alternator is the first noise of the day. As the belt warms up it becomes better at handling the load of the accessories.
Even tho the belt looks fine, you may have to replace it to get rid of the noise.

Feb 13, 2013 | Cars & Trucks

1 Answer

Hyundai accent squealing very loud


You need to replace the belt.
Once a belt gets glazed it will slip no matter how tight it is.

Jan 17, 2013 | 2000 Hyundai Accent

1 Answer

Hyundai accent squealing very loud


Have you checked the belt for cracks? Also, you never want to use the spray on the belt. If the belt is new, then you want to check the pulleys for dirt or old rubber that melted to the pulley. A good way to clean the pulleys is to remove the belt and use soapy water and a tooth brush and clean each pulley. If you are having a hard time getting all the junk off, you could try using a pick or a screwdriver and CAREFULLY pressing it against each pulley until they are clean. If that doesn't work then you could either have a misalignment of pulleys, wrong belt, or possibly fluids leaking on belt.


Scott
ASE Certified Automotive and MED/HVY Truck

Jan 17, 2013 | 2000 Hyundai Accent

1 Answer

Car won't stay running after sits overnight and runs good after you do get it started


In the morning, turn key to on position for 5 seconds. Do not crank.Then turn off for 5 seconds. Repeat this about 5 times. Then try to start. If engine starts right up, the fuel pump check valve is bad. Meaning all fuel in fuel line is returning to the tank when car sits overnight. The only fix is to replace fuel pump. If that doesn't work, replace coolant temp. sensor for the computer. About a 12.00 part.

Feb 05, 2012 | 1994 Pontiac Grand Prix

1 Answer

Squealing at start up


For squealing noise problem,click the link below :----http://technoanswers.blogspot.com/2012/01/squealing-at-start-up-on-car.html
--------This will help.Thanks.

Jan 27, 2012 | 2000 Mazda 626

1 Answer

2002 madza protege 4 cyl had new ignition coils, wires, plugs and egr valve, fuel system clean out but still wont start after cold damp night and sitting 8-16 hours. After day warms up to 50-60 it starts...


Symptoms are indicative of a partially broken wire somewhere, the cold increases the resistance in the wires and if they aren't working at 100% to start with, will cause your problem. I think you are on the right track, I would replace any high tension parts not already new then start looking for wires showing a high resistance. Check and clean ( with contact cleaner aerosol ) any and all electrical plugs in your ignition system. I would try drying out your computer and packing around it with silica gel to keep it dry.
Good luck

Mar 25, 2010 | 2002 Mazda Tribute

2 Answers

Squealing noise


does it go away as it warms up ? or does it stay that way check belt tension

Dec 30, 2009 | Toyota ECHO Cars & Trucks

1 Answer

Chirp when starting


You probably have the same issue as many Sentra owners- bleed off of fuel pressure. This would cause a hard starting condition when the vehicle sits overnight. See TSB# NTB05-052a for the procedure. This is a dealer-only repair (parts are not available aftermarket).

As for the squeal, I've seen a LOT of this- the belts on these vehicles are less than excellent quality. The belts might look fine and some mechanics will say that they don't need to be replaced, but they are noisy and they can't be quieted up even by overtensioning them. Replacement is the only repair. Aftermarket belts can also be very noisy, so I would suggest Original Equipment (Nissan) belts.

Hope this is helpful!!!


Nissan Scope Technician- 10+ years experience in Nissan dealership.

Nov 16, 2008 | 2004 Nissan Sentra

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