Re: Cranking RPM too low?
[Re: Stephen Richardson]
#427701
June 06, 2014 04:03 pm UTC
June 06, 2014 04:03 pm UTC
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Joined: Feb 2010
Posts: 2,504 Your girlfriend's closet
Lucian Marta
Insane Member
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Insane Member
Joined: Feb 2010
Posts: 2,504
Your girlfriend's closet
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I have been beat before by starters that bench test good but fall on their face under load. Agreed! I had the exact same problem and I had extremely low cranking speed. Starter bench tested fine but under load it was weak. Worth a try!
1993 TSi AWD 2008 Evo GSR 2011 Ralliart 2012 Ralliart 2011 RVR GT
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Re: Cranking RPM too low?
[Re: Rob Strelecki]
#427715
June 06, 2014 07:37 pm UTC
June 06, 2014 07:37 pm UTC
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Joined: May 2010
Posts: 1,950 Guelph, Ontario
Jeremy Gilbert
Serious Member
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Serious Member
Joined: May 2010
Posts: 1,950
Guelph, Ontario
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I've seen them bench tested under load. I was at a starter shop and they apply load with a 2x4 against the gear while the starter is in a vice. This was the method I used to confirm that my slow cranking was NOT a problem with the starter. If the starter is out for bench testing, it's worth a shot. If it can chew through 2x4, you've got other issues.
1995 TSi AWD 11.7@119 1.8 60' - Curse of the Bad Driver PHP: 0
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Re: Cranking RPM too low?
[Re: Chris Browning]
#428057
June 12, 2014 08:38 pm UTC
June 12, 2014 08:38 pm UTC
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Joined: Oct 2010
Posts: 9,968 Caledon, Ontario, Canada
Bryan Lawrence
Senior Member, with Far TOO Much Time on Their Hands
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Senior Member, with Far TOO Much Time on Their Hands
Joined: Oct 2010
Posts: 9,968
Caledon, Ontario, Canada
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Maybe try bench testing it with a piece of wood to confirm.
"Old Blue" 91 Talon TSi AWD "Super Enthusiast" 91 Talon TSi AWD Checkout DSMFAQ.com!
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Re: Cranking RPM too low?
[Re: Chris Browning]
#428381
June 18, 2014 09:21 pm UTC
June 18, 2014 09:21 pm UTC
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Joined: May 2010
Posts: 608 Toronto, ON
Chris Browning
OP
Serious Member
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OP
Serious Member
Joined: May 2010
Posts: 608
Toronto, ON
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Well guys I'm at my wits end with this issue. Jeremy kindly lent me a BNIB Bosch Starter to try out in the car. I installed the starter and also decided to replace the positive cable for good measure. So with two new cables and a brand new starter I saw about 210rpm while cranking, still very slow. I then took the car down to PartSource where they allowed me to install a brand new 960 cranking amp battery in the car. So with brand new battery, cables, and starter and all connections checked and cleaned I saw 210rpm. I'm going to need some "outside the box" suggestions on this one. Is there any way the starter relay system could be sending a weak signal to the solenoid so that it doesn't make full contact? I've included two videos below, the first is cranking inside the car from a few days ago with the rebuilt starter installed, the second video is from today under the hood with the brand new starter and cables. I measure the speed while cranking by pulling the ignition plug so that the engine doesn't fire, I can't pull the MPI relay because then my turbo timer doesn't give me an rpm reading. The only other piece of information that I can think of is that when I installed a used replacement ISC motor a few weeks ago the car sounded like it was turning over faster and not labouring as much. That replacement ISC died fairly quickly though and after that it cranked like it did before. This sounds like the engine is being choked for air but if I open the throttle while cranking it does not gain any rpm. https://www.youtube.com/watch?v=h2WA25SOchQ&feature=youtu.behttps://www.youtube.com/watch?v=fVcr39rFbx8&feature=youtu.be
1995 Talon TSi AWD Evo III 16G / FIC 850's / Walbro 255 / RTM FMIC / ECMLink V3
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