It was down pouring outside so I couldn't check as much as I wanted. Here is
what I did
check. Fuel pressure from the tee was about 28lbs at idle. Pulled the vacumn
line off the pressure regulator and it rose to around 38lbs. When I clamped
the return line it shot up
to about 80 lbs and wanted to stall. I left the gauge on for about 15
minutes and it lost about
a pound. I may run back out and pull the computer again and triple check the
02 wire AGAIN. Question should I look back in towards the computer with it
still plugged in with
the Ohm meter? Should I see a ground in the ECU with the key off through the
center of the wire? Can I damage the ECU by looking back at it through the
center wire. I did check the braid again and it is grounded. I'd love to
pull plugs tonight but its to wet.

A.

On Thu, Jun 18, 2009 at 4:20 PM, Amy Miner <vanagonwestygirl@gmail.com>wrote:

> Yes I did check the braid itself to ground and yes its grounded. The center
> wire is clean until I turn the key on and I get .5 volts. I put one lead on
> the braid and one test lead on the block and I get an almost solid short.
> Where does this braid get its ground from? ie..where is the ground point for
> it? I did notice a small brown ground wire coming off the computer and I
> cleaned that up when doing my inital assesment...Thanks for the help so far.
> Please keep it coming.
>
> A.
>
>   On Thu, Jun 18, 2009 at 4:11 PM, mark drillock <mdrillock@cox.net>wrote:
>
>> But did you check that the braid itself is grounded to the block? It must
>> be grounded for the O2 system to work.
>>
>> The center wire must never be grounded and the braid must always be
>> grounded.
>>
>> Mark
>>
>>
>> Amy Miner wrote:
>>
>>> What concerns me is that when the motor is fully warmed up and I touch
>>> the
>>> center which had .5 volts on it to ground nothing changes. I did check
>>> the
>>> wire and there is no ground on it with a ohm meter. I checked to ground
>>> on
>>> the block and checked to the braid around the coax and there is no short
>>> to
>>> ground. The injectors have all been pro cleaned before I installed them.
>>> I
>>> tried to pull plug wires at idle and each one changes the way the motor
>>> runs
>>> very little. I have a fuel pressure gauge and I will check that tonight.
>>> At
>>> idle is appears to run okay but when I rev the motor I get puffs of black
>>> soot. Even leaves little black specs on the ground. I am just trying to
>>> figure out what would make the motor get "stuck" in what appears to be a
>>> cold running mode. Would to much fuel make the van lose power while
>>> driving?
>>> I also checked the oil and it still looks/smells clean. Doesn't appear to
>>> have fuel in it. I'll report back on the fuel pressure later,I'll check
>>> all
>>> grounds again,pull the plugs and look at them.
>>> Will look back here for more suggestions when I get home before I start
>>> working on it tonight
>>> so please keep the suggestions coming. I'd like to get this sorted out
>>> before my husband gets home from work this weekend.
>>>
>>> A.
>>>
>>
>