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Old 11-28-2013, 02:31 PM   #1
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Need Mach 1 help asap!!!!

So when I bought my mach 1, it had a 62mm throttle body and an idle problem. It would tend to stall. So I picked up the stock throttle body to swap out. I swapped it, cranked it, and it idled very low and most of the time just cut off. And every time I clutched it, it would stall. I called my shop and they told me it probably had a chip that was tuned for the bigger tb. So today, I put the bbk throttle body back on. Went to crank it, and when I turned the key, the rpms jumped up to 3-4k on its own, and the quickly cut off. Tried a couple of times and same thing happened everytime. Soooo at this point I'm willing to deal with the stalling the stock tb gave me, so I swapped back, and cranked it. Same thing happened but this time, it sounds like the belt or something is squealing really loud. I cannot think of anything it could be.

Things I've tried:
Reset battery a few times
Unplugged tps sensor
Swapped throttle body's twice
Gave it gas (couldn't keep it running)

Someone with knowledge please help!!!
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Old 11-28-2013, 02:32 PM   #2
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Idk heard those bbk throttle body are garbage
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Old 11-28-2013, 02:33 PM   #3
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Exactly why I was going back to stock. But now I've got a much bigger problem than stalling
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Old 11-28-2013, 02:49 PM   #4
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Quote:
Originally Posted by 98GTCONV View Post
Exactly why I was going back to stock. But now I've got a much bigger problem than stalling
Could it be your alternator not charging making it stall and the squeaking noise I don't know tho I had some what of the same problem in my truck
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Old 11-28-2013, 02:51 PM   #5
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Originally Posted by Screaming Mach View Post
Could it be your alternator not charging making it stall and the squeaking noise I don't know tho I had some what of the same problem in my truck
I just don't get why the rpms shoot up to 4000 when I crank it...
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Old 11-28-2013, 02:55 PM   #6
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Originally Posted by 98GTCONV View Post

I just don't get why the rpms shoot up to 4000 when I crank it...
Yes that is very weird

---------- Post added at 02:55 PM ---------- Previous post was at 02:52 PM ----------

Sorry wish I could help I just don't know
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Old 11-28-2013, 03:07 PM   #7
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Put a vid on my Instagram @compmachwon
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Old 11-28-2013, 03:12 PM   #8
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Sounds like alt
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Old 11-29-2013, 07:03 AM   #9
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Did you figure it out?
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Old 11-29-2013, 10:34 AM   #10
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Pull the kick panel off and see if there is any chip on the ECU. If there is yank it off, install the stock TB and it should idle like stock.

And yes BBK throttle bodies are less than great.
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Old 11-29-2013, 10:49 AM   #11
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Sorry Paul, I didn't want to be the one to tell you but the motor's shot :/ I'll give ya $5k the car
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Old 11-29-2013, 10:51 AM   #12
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Haven't figured anything out yet. About to go check for a chip. If there's no chip, it's getting towed to my shop ASAP
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Old 11-29-2013, 11:45 AM   #13
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Found duct tape over this
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Old 11-29-2013, 12:58 PM   #14
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So I took the chip out, put it back together, cranked it up, same thing. Whining, and cuts off. Definitely sounds like alternator. Would that cause the car not to be able to start?

Also every time I give it gas to try to keep it running, there is a lot of smoke. Looks blue.
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Old 11-29-2013, 07:00 PM   #15
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I think blue smoke means it's burning oil. Pull the plugs and see if they are fouled. If it's burning a lot of oil, the plugs can get fouled, leading to misfiring and just running like crap
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Old 11-29-2013, 07:03 PM   #16
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Just replaced the plugs 2 months ago
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Old 11-29-2013, 07:28 PM   #17
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Iac anyone? Just my 2ยข

---------- Post added at 08:28 PM ---------- Previous post was at 08:26 PM ----------

Also maybe you have a bent/burnt valve. Could check by borrowings a compression gauge and checking compression across the whole block for the blue smoke. Possible blow by symptoms if any just a thought
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Old 11-29-2013, 10:31 PM   #18
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Have you checked for any codes?

Problem might not show up there, but its worth a shot if you have the tools.

I have a feeling one problem caused another here, but its hard to tell. Blue smoke on start up is usually a valve stem issue. Maybe timing chain broke or jumped some teeth........
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Old 11-29-2013, 10:57 PM   #19
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What would be the cause of the whine tho? I think I'm just gonna give her a bath and put her up for the winter...
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Old 11-29-2013, 11:41 PM   #20
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An iac would cause a "whine" type noise and would also cause it to die on idle.....
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o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 11-30-2013, 11:43 AM   #21
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I agree with the iac. Had 2 go bad on mine
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Old 11-30-2013, 11:53 AM   #22
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It's not like it's a quiet whine. It's very loud. Almost like an eaton at WOT lol
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Old 11-30-2013, 01:59 PM   #23
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Could be idler pulley or tensioner pulley gone bad as well on the whine ...... had it happen to me sounded like a paxton lol
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o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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