Intermittent Cranking Problems

[zenwill]

My wife's 99 Bravada has developed an intermittent cranking problem. The engine will turn over but not run (almost like a vehicle with a broken timing belt). When we to try to crank it later it will start as it should. This has happened twice in the past week or so. Could a short somewhere be causing this type of behavior? Or, could it be a fuel pump problem?

I hate to send it to a shop for several days while they try to catch it not starting (of course it will always start fine at the shop ). Wondering if anyone else has had this problem, and if so, what the solution might be.

Thanks for any info you might have.

Ken

[ericn1300]

could be a lot of things, start with checking for at least 60lbs fuel pressue when the no start occurs also check for spark. could be fuel pressure, a security system or the crank position sensor among other things.

[zenwill]

Thanks Eric,

The thing finally went to a full "no crank" status yesterday. Fuel pump is shot. Another $500.00 gone. Seems like every problem with this thing is $500.00.

[spddmn1]

My wifes 01' is doing something similar. She went to start it & it cranked a few seconds, then fired up. I'm used to this problem on my 94' Cavalier & it's always the coil packs. So i checked the wires & one was bad. I ended up replacing the cap, rotor, wires. Ran out of money so i haven't replaced the plugs yet. That's this weekends project. Anyways it fired up right away the first day, after that she starts it up & it cranks for a few seconds then starts, she went shopping & it started right up for her. If you're in & out of it alot it'll start great. Drive it & an hour or 2 later it takes a few seconds to start. Her remote start takes 2 trys to start. Fuel pump kicks on when turning the key forward. Going to get a pressure gauge to check fuel pressure. Besides the other things mention in other replies could it also be the ignition coil, module, ignition switch? If it's the fuel pump i'll drop the tank myself & do it.

[old_master]

Originally Posted by spddmn1

My wifes 01' is doing something similar. She went to start it & it cranked a few seconds, then fired up. I'm used to this problem on my 94' Cavalier & it's always the coil packs. So i checked the wires & one was bad. I ended up replacing the cap, rotor, wires. Ran out of money so i haven't replaced the plugs yet. That's this weekends project. Anyways it fired up right away the first day, after that she starts it up & it cranks for a few seconds then starts, she went shopping & it started right up for her. If you're in & out of it alot it'll start great. Drive it & an hour or 2 later it takes a few seconds to start. Her remote start takes 2 trys to start. Fuel pump kicks on when turning the key forward. Going to get a pressure gauge to check fuel pressure. Besides the other things mention in other replies could it also be the ignition coil, module, ignition switch? If it's the fuel pump i'll drop the tank myself & do it.

It would be less confusing if you would start a new thread here http://www.automotiveforums.com/vbul...wthread&f=2072 and post your question.

Thanks