Starting

MXB1222

MEMBER
1990 CADILLAC SEVILLE
V8
2WD
AUTOMATIC
138,000 MILES

I drive a 1990 Cadillac Seville (4.5L V8). In the morning the car starts fine, but say I need to drive it to the store. When I park it, go in the store for 10 minutes and then return to the car, it won't start. It doesn't even crank over. I have to wait any where from 30 minutes to an hour for it to start again. Any idea what is causing this problem? Thanks!

Saturday, July 23rd, 2011 AT 9:34 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

https://www.2carpros.com/articles/car-cranks-but-wont-start

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

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Saturday, July 23rd, 2011 AT 9:39 PM