Back fire on start stock 496HO
01-09-2019, 07:14 PM
#21
Registered
Thread Starter
Resolved
Hey guys, replaced the cam sensor and back fire is gone, next problem; replaced IAC, won’t cease ops and cuts out engine when idle or close. Just fine in high power....
01-24-2019, 10:34 AM
#22
Registered
Thread Starter
Crank shaft sensor
hey guys, any cross reference for crank shaft sensor like the automotive IAC for the Merc 496? $330 pretty steep for a quick silver....
01-24-2019, 11:47 AM
#26
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iTrader: (1)
No difference in the automotive IAC that people have been using not the same number as MerCruiser either
01-24-2019, 12:54 PM
#27
Banned
iTrader: (9)
to set the record straight not all aftermarket crossover IAC's work as they should per PWM matching what MERC has installed And for the record I can prove all of this first hand on twin engine scan reports just by same day changing the IAC s and gaskets out from Standard motor products and BWD to what Merc is selling for IAC they use.. Anyone what to take that bet ? because I have the sameday scan reports from idle to WOT of the differences of the PWM between the IACs. You are going to be surprise at the difference between the PWM s. Apples to Apples testing. Plus how many people up here have I told to try the IAC merc uses and they reported their running issues cleared up completely.
I have many OEM IAC s as well for way less plus the proper info and proper related parts that need to be installed on top of.
For the crank sensor the early version were RIBBED versions and are NLA they went to a NON ribbed version. Like I said I have them that are the same as MERC .
I have many OEM IAC s as well for way less plus the proper info and proper related parts that need to be installed on top of.
For the crank sensor the early version were RIBBED versions and are NLA they went to a NON ribbed version. Like I said I have them that are the same as MERC .
Last edited by BUP; 01-24-2019 at 05:56 PM.
01-24-2019, 01:09 PM
#28
Banned
iTrader: (9)
496 Mag surges on idle
the link above is one about switching to the IAC Merc uses - yep 60 bucks more he had to pay but like I said the aftermarket cheaper IACs do not exactly work out alot of the times. Really do not care if you think im wrong cause If I have to Ill post the testing results i did for the day all about this and the difference PWM results from one IAC to another to what MERC uses, I was even shocked at the different parameters when scanning
the link above is one about switching to the IAC Merc uses - yep 60 bucks more he had to pay but like I said the aftermarket cheaper IACs do not exactly work out alot of the times. Really do not care if you think im wrong cause If I have to Ill post the testing results i did for the day all about this and the difference PWM results from one IAC to another to what MERC uses, I was even shocked at the different parameters when scanning
01-25-2019, 07:13 AM
#29
Registered
iTrader: (1)
to set the record straight not all aftermarket crossover IAC's work as they should per PWM matching what MERC has installed And for the record I can prove all of this first hand on twin engine scan reports just by same day changing the IAC s and gaskets out from Standard motor products and BWD to what Merc is selling for IAC they use.. Anyone what to take that bet ? because I have the sameday scan reports from idle to WOT of the differences of the PWM between the IACs. You are going to be surprise at the difference between the PWM s. Apples to Apples testing. Plus how many people up here have I told to try the IAC merc uses and they reported their running issues cleared up completely.
I have many OEM IAC s as well for way less plus the proper info and proper related parts that need to be installed on top of.
For the crank sensor the early version were RIBBED versions and are NLA they went to a NON ribbed version. Like I said I have them that are the same as MERC .
I have many OEM IAC s as well for way less plus the proper info and proper related parts that need to be installed on top of.
For the crank sensor the early version were RIBBED versions and are NLA they went to a NON ribbed version. Like I said I have them that are the same as MERC .
I was just answering his question of a replacement Crank sensor,Those as you know work differently what matters is the air gap between the reluctor and the sensor, the reluctor is the same in the Marine and auto applications because it’s the same crankshaft the sensor is a three wire sensor ,a sensor signal, a 12 V and a low reference wire, so as long as the gap between the reluctor and the sensor are the same it’s the same sensor and yes GMs Crank sensors are also a NON ribbed single O ring design to help eliminate them from sticking in the block.
And not really interested in taking a bet if you were referring to me, just trying to help out
Last edited by boatnt; 01-25-2019 at 08:31 AM.
01-25-2019, 07:34 AM
#30
Gold Member
Gold Member
to set the record straight not all aftermarket crossover IAC's work as they should per PWM matching what MERC has installed And for the record I can prove all of this first hand on twin engine scan reports just by same day changing the IAC s and gaskets out from Standard motor products and BWD to what Merc is selling for IAC they use.. Anyone what to take that bet ?
