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Making sense of sensors...

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Old Yesterday | 10:35 PM
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Ray Bell
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Default Making sense of sensors...

When I bought my '91 B250 last year ir wasn't running properly and I got considerable help from the folks here to improve it...

https://dodgeforum.com/forum/dodge-r...i-318-a-2.html

Among the things which came with the van were some sensors, one clearly an O2 sensor, another was labelled as a MAP sensor and it looks like those pictured in advertisements for MAP sensors. The odd man out is this one, which isn't new like the others:



It appears to me to be a throttle position sensor, but branded 'Holley', does it belong on this van?

Anyway, the sensors included show that the previous owner was making some kinds of attempts to make it run right. I got a lot of improvement when I replaced a faulty injector (TBI) but once that was done I was happy to run it like that for the final 3000 miles of my trip. Major works would have to await arrival of the van in Australia.

The first thing, seeing as I'm a bit 'time poor' at the moment with lots of work on, is to determine just what this particular sensor might be and if I need to worry about it. I will find time, however, to check out the muffler I took off it in America and see if it was blocked as I supposed it might be at the time.

For the record, it took almost ten months for the van to get here, the previous one took a day short of a year, and I'm still tied up getting it ready to be complianced for use in Australia. Things will not happen quickly, I don't imagine.

Compliancing this one is a lot easier because it has universally available headlights, the old 5 x 7 units, whereas the RAM1500 I've had to hunt down some that look right and then find a way to mount them. Both vans require the safety belts to be changed and the parking lights to become white and the rear indicators to become amber. I know how to do all that, done it before, but time is the issue.
 
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Old Today | 08:24 AM
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Yeah, throttle position sensor.

What problems are you having??
 
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Old Today | 09:49 AM
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That's still to be established...

I have to get it on the road (ie. complianced and registered) before I start working on that, my nephew will be able to diagnose most of the issues, I'm sure. But just working out what was going on before I bought it is an issue at hand, and establishing what that Holley component is might lead me to an answer on that.
 
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