My car will start and run great till it gets warm then it quits. Wait till it cools off and it will start again. I have replaced the coil pack, computer. Could it be the fuel pump, maf, I'm not sure I yust looking for some where to start.
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Re: 89 Grand Prix will quit after running
Starting point is some checks and tests.First,scan the car for diagnostic trouble codes.If a manfunction is occuring,it is highly likely that the vehicle computer has recorded and stored a trouble code or two.The trouble code will point to the system or subsytem or sensor that is malfunctioning.Every trouble code has a diagnostic route to resolve the problem.If you suspect a fuel problem,a pressure gauge should be hooked to the fuel injection rail to verify proper fuel pressure.Also look for vacuum lines that are cracked,deteriorated,or sucking air.Good luck.
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if its the cooling fan at the rad then your talking about then if you disconnect the plug on the fan and run jumper wires to it directly from the battery it should run.also check the plug connection to make sure its in good condition and no corrosion.if you jump the fan motor and it doesn`t run tap the motor it should run either way if it doesn`t then the cooling fan motor needs replacing.
Are you sure it's a tick or is it more of a knock? There is a service bulletin on this issue from GM. Long story short, they tell you to replace all the pistons in the engine to fix it. BUT. This won't hurt anything and you don't have to fix it. I have this exact car. It's been doing this since it's had 75,000 on it. It now has 210,000 on it an is still doing it. It knocks when its cold till it warms up and the pistons expand. Then it goes away. Car still runs perfect.
Start by flushing your coolant system, then refill with a quality coolant.
Run up to temperature and check again for level (when cool again)
Check that the radiator is getting really hot quite suddenly when running from cold, as this is the best way of checking thermostat operation.
When over a set temperature (check your manual) the fan should come on.
If it never does - troubleshoot the fan (temperature switch or sensor first, then fan on direct feed to see if it powers up ok)
not quite a solution but I had a similar problem with a lincoln. Once cool, try to find the advance and ****** diaphram for the timing,( assuming 89 still has one) pull off the small black/clear pipe and block off. lol, I used a twig ( when you're broke down on a motorway anything will do) try starting again see if this cures the problem. if so you need to replace the diaphram. let me know what happens - could be a whole series of probs-this being the easiest to try. AK