1998 V70 Crank, No Start, No Spark, after manual swap

nmotzing · Post by **nmotzing** » 07 Jun 2016, 11:36

After swapping a motor and trans from a T5 M into my '98 V70 R I'm getting a crank, no spark scenario. However there is good fueling through the injectors confirmed by popping out the rail and drenching my garage floor. There also is no power coming from the coil but considering they rarely go bad that really isn't suspect.

I lopped off the big connector which attaches to the auto transmission and connected the two green wires to bypass the neutral position interlock junk. I've yet to wire up the blue wires to the reverse light switch but are there any other wires in that bundle that need to be addressed?

My concern is I have two electrical connectors that I cannot find the other side for, one being a grey two prong female coming out from the wiring harness at the same place as the two 02 sensor connectors. It is has the same asymmetrical locating slots as the coolant level sensor and the plug which goes into the alarm connected to the firewall.

The other connector is a two prong bullet type which comes out of the harness just to the passenger side of the brake master cylinder.

The manual transmission wiring harness has neither of these two connectors, and I cannot remember where they go! I feel they need to be short circuited or something but if anyone has some first hand experience it'd be greatly appreciated!

Obviously the usual suspects are the cam and crank sensor. I swapped over the cam sensor from my old motor with no change however it's been sitting outside for about a month so that might be fried too.

nmotzing · Post by **nmotzing** » 08 Jun 2016, 10:38

After some poking around last night, literally, with my electrical connector probe thing, there is power going TO the coil when the key is in the II position, both blue and red wires are hot. however when I turn the key there is no power coming from the coil to the distributor. Tried a different coil with the same results, tried a different (not new) crank sensor with same results as well as a different cap.

I know this is one of about a 10,000 "crank no start" posts on here, I've read most of them, and I realized the only other thread I've started was for the same problem with my first volvo in 2009. That ended up being a cam sensor, one of the first things people suggested and after it sitting for months, I popped a brand new on there and fired right up. I swore It would always be the first thing I replaced for a no starting white block. Picking a new one after work today, just to totally remove it as a variable, however most of the reason for my post was trying to determine if there were modifications necessary to the wiring harness to get a spark beyond what i'd already done.