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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 05-13-2019, 11:35 AM   #21 (permalink)
JMJNet
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Quote:
Originally Posted by 57diesel View Post
I got the credit for the dud sensor. Now have to decide which brand to buy this time.


Having a similar dilemma with the distributor on one of my Caddys. Complete new turn key assembly for $80 or strip down rebuilt units for $150-$250 plus core. If I knew the rebuilds were high quality I would go that way no problem but my fear is they are all the same crap so I might as well get the complete one for a lot less money.
So which sensor that you got was the dud?
Just curious.

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Old 05-14-2019, 11:58 AM   #22 (permalink)
57diesel
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It was an AC boxed MAP sensor. With it installed I got like 11 different codes and a no start. My theory is its got a short that was dragging down the voltage so lots of sensors were kicking errors.

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98 Burb K25 4.10's 250K miles, new to me, pretty clean and stock.
95 Burb K25 3.73's CRASHED 250K miles, looks to have been rebuilt at least once, stock, bad rust, DE exhaust w/walker muffler, 8' western plow.
81 Buick Riviera GAVE AWAY with the infamous Olds 5.7 diesel possibly still going strong.
15 VW Golf wagon, TDI. Did the buyback on my 13 Jetta TDI wagon so it was basically a trade up.
96 Burb K25 3.42's SOLD at 340K miles, told it was all original, close race between engine wearing out or body completely rust out.
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Old 05-14-2019, 04:02 PM   #23 (permalink)
JMJNet
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Just FYI.
There are a few different MAP sensors categorized by 1 Bar, 2 Bar or 3 Bar.
I think you can go higher Bar but not lower.
In other words, you can use 3 Bar for anything because it has the highest voltage.
At least that is the way I understood it.
The 3 Bar is especially useful for truck that have mechanical Wastegate (TM) to trick it so that it does not code on over boost.
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1995 GMC Suburban:
PMD in Bumper
Leroy Diesel Flight System PMD
Leroy Diesel Oil Cooler Line
4" Warpspeed Exhaust
Kennedy Diesel LP/OPS Harness
Bosch Duraterm GP
Heath Turbo-Master
AD244 Alternator

Last edited by JMJNet; 05-14-2019 at 04:03 PM.
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Old 05-15-2019, 09:45 AM   #24 (permalink)
57diesel
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Just plugged into the harness tripped the codes and caused no start so I don't think it was a range issue.
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98 Burb K25 4.10's 250K miles, new to me, pretty clean and stock.
95 Burb K25 3.73's CRASHED 250K miles, looks to have been rebuilt at least once, stock, bad rust, DE exhaust w/walker muffler, 8' western plow.
81 Buick Riviera GAVE AWAY with the infamous Olds 5.7 diesel possibly still going strong.
15 VW Golf wagon, TDI. Did the buyback on my 13 Jetta TDI wagon so it was basically a trade up.
96 Burb K25 3.42's SOLD at 340K miles, told it was all original, close race between engine wearing out or body completely rust out.
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Old 05-15-2019, 09:46 AM   #25 (permalink)
jnlperformance
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Which bar gives us the maximum allowable psi? Before the ecm tells the ip to defuel...

Bar3?? Or bar1?

Eg I'm running an fvin intake and chip but I'm still using the svin map... I have been wondering about this. Still using a vacuum regulated wg.
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Last edited by jnlperformance; 05-15-2019 at 09:48 AM.
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Old 05-15-2019, 11:56 AM   #26 (permalink)
JMJNet
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Quote:
Originally Posted by jnlperformance View Post
Which bar gives us the maximum allowable psi? Before the ecm tells the ip to defuel...

Bar3?? Or bar1?

Eg I'm running an fvin intake and chip but I'm still using the svin map... I have been wondering about this. Still using a vacuum regulated wg.
3 Bar

@57Diesel issue is bad sensor.
Yes, ACDelco is not immune but at least if it is working it should have the correct spec.
Another problem is "fake" products/parts.
Did you get it replaced?
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1995 GMC Suburban:
PMD in Bumper
Leroy Diesel Flight System PMD
Leroy Diesel Oil Cooler Line
4" Warpspeed Exhaust
Kennedy Diesel LP/OPS Harness
Bosch Duraterm GP
Heath Turbo-Master
AD244 Alternator

Last edited by JMJNet; 05-15-2019 at 11:57 AM.
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Old 05-15-2019, 02:59 PM   #27 (permalink)
jnlperformance
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Thanks jmj!
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Old 05-15-2019, 03:54 PM   #28 (permalink)
57diesel
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I got credit from Rock on the dud and ordered a Standard brand one instead. I wasn't sure what brand to get but the Standard one was from the same location as the other part I needed so that decided it. Historically Standard has been a good brand so hopefully it works out.
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98 Burb K25 4.10's 250K miles, new to me, pretty clean and stock.
95 Burb K25 3.73's CRASHED 250K miles, looks to have been rebuilt at least once, stock, bad rust, DE exhaust w/walker muffler, 8' western plow.
81 Buick Riviera GAVE AWAY with the infamous Olds 5.7 diesel possibly still going strong.
15 VW Golf wagon, TDI. Did the buyback on my 13 Jetta TDI wagon so it was basically a trade up.
96 Burb K25 3.42's SOLD at 340K miles, told it was all original, close race between engine wearing out or body completely rust out.
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Old 05-15-2019, 05:06 PM   #29 (permalink)
JMJNet
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Quote:
Originally Posted by 57diesel View Post
I got credit from Rock on the dud and ordered a Standard brand one instead. I wasn't sure what brand to get but the Standard one was from the same location as the other part I needed so that decided it. Historically Standard has been a good brand so hopefully it works out.
Keep us updated.
__________________
1995 GMC Suburban:
PMD in Bumper
Leroy Diesel Flight System PMD
Leroy Diesel Oil Cooler Line
4" Warpspeed Exhaust
Kennedy Diesel LP/OPS Harness
Bosch Duraterm GP
Heath Turbo-Master
AD244 Alternator
Offline   Reply With Quote Quick reply to this message
Old 05-19-2019, 09:04 AM   #30 (permalink)
57diesel
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Got the new Standard branded one from Rock. From what I remember it looks identical to the AC one. No label or markings of any kind anywhere on the part.

You would think they would want to at least put a dot or scratch or something on them to identify them between production and packaging. I guess that goes on the box.


Have not driven anywhere yet but it starts and I was able to reset the light. At least this part was a little cheaper and so far works better.

__________________
98 Burb K25 4.10's 250K miles, new to me, pretty clean and stock.
95 Burb K25 3.73's CRASHED 250K miles, looks to have been rebuilt at least once, stock, bad rust, DE exhaust w/walker muffler, 8' western plow.
81 Buick Riviera GAVE AWAY with the infamous Olds 5.7 diesel possibly still going strong.
15 VW Golf wagon, TDI. Did the buyback on my 13 Jetta TDI wagon so it was basically a trade up.
96 Burb K25 3.42's SOLD at 340K miles, told it was all original, close race between engine wearing out or body completely rust out.
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