What have you done to your square lately??

[JamesSam]

@gmbellew Glen, thanks for the feedback. I have researched the code 21. I also looked through the Fuel and Emissions Manual at the diagrams.

I think I want to try bending the tab as you suggest. No scanning ability other than the paper clup trick. I would need to borrow auto-meter, or go buy one.

You are suggesting I bend the metal tab on the TPS that moves with throttle, correct? Which direction should I start with? Towards cab or towards grill?

 

[JamesSam]

@gmbellew Glen, thanks for the feedback. I have researched the code 21. I also looked through the Fuel and Emissions Manual at the diagrams.

I think I want to try bending the tab as you suggest. No scanning ability other than the paper clup trick. I would need to borrow auto-meter, or go buy one.

You are suggesting I bend the metal tab on the TPS that moves with throttle, correct? Which direction should I start with? Towards cab or towards grill?

Also, I have asked O'Reilly's to order an AC Delco TPS. They had to put in a special request and will let me know if they can fulfill the order. So waiting to hear back from them.
I have read and seen in videos that the cheap ones often don't run correct voltage. The one in my truck currently is aftermarket, middle of the road price. Me, trying to save a buck and get it running right. Hopefully O'Reilly's will come through or I guess I will be looking on Evilbay.

 

[gmbellew]

@gmbellew Glen, thanks for the feedback. I have researched the code 21. I also looked through the Fuel and Emissions Manual at the diagrams.

I think I want to try bending the tab as you suggest. No scanning ability other than the paper clup trick. I would need to borrow auto-meter, or go buy one.

You are suggesting I bend the metal tab on the TPS that moves with throttle, correct? Which direction should I start with? Towards cab or towards grill?

Without a voltmeter you are shooting in the dark a little bit. But you'd want to bend it toward the cab, I think, to reduce the voltage at idle.

 

[Ricko1966]

You can make a tps tester out of a 5 volt phone charger. Unplug the tps,hook the phone charger to it. Check voltage with throttle closed,check voltage at WOT. I think your readings are supposed to be .3 volts and 4.8 volts.

 

[Johnny Atomic]

got a rear painted bumper with dings (no rust) and what not for the hunting truck. Gonna drop it off tomorrow to have the lower corners cut out and have him weld in some corner steps like the newer vehicles. $85 delivered and guessing less than $150 for the cut/weld and a little metal.

Make it easier to get in when the tailgate is down.

That bumper sounds cool, I can't wait to see it.

 

[Ontheboulder]

finally getting back to work on my 87 GMC. got the rough idle fixed after a slew of sensor replacements. replaced the stock vacuum booster and another new master cylinder. waiting on steel brake lines for the rear and I have new rubber hose for brakes to fit the lift.with any luck i will finally get to put some miles on it soon!!

 

[brooksman9]

New shoes

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[83Stepper]

Also, I have asked O'Reilly's to order an AC Delco TPS. They had to put in a special request and will let me know if they can fulfill the order. So waiting to hear back from them.
I have read and seen in videos that the cheap ones often don't run correct voltage. The one in my truck currently is aftermarket, middle of the road price. Me, trying to save a buck and get it running right. Hopefully O'Reilly's will come through or I guess I will be looking on Evilbay.

Try Rockauto, found the AC Delco Gold TPS for like $66.79. Shipping might take a bit longer, but they're usually cheaper than 90% of anywhere I look for parts.

1987 CHEVROLET V10 PICKUP 5.7L 350cid V8 Throttle Position Sensor (TPS) | Shop Now at RockAuto

Fuel & Air Parts and More for Your 1987 CHEVROLET V10 PICKUP at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

[JamesSam]

Try Rockauto, found the AC Delco Gold TPS for like $66.79. Shipping might take a bit longer, but they're usually cheaper than 90% of anywhere I look for parts.

1987 CHEVROLET V10 PICKUP 5.7L 350cid V8 Throttle Position Sensor (TPS) | Shop Now at RockAuto

Fuel & Air Parts and More for Your 1987 CHEVROLET V10 PICKUP at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

Dang! Just ordered it from Summit via 2nd day air. I was impressed that Summit was about $30 cheaper than what I would have paid at the parts store, even with air mail.

 

[gmbellew]

You can make a tps tester out of a 5 volt phone charger. Unplug the tps,hook the phone charger to it. Check voltage with throttle closed,check voltage at WOT. I think your readings are supposed to be .3 volts and 4.8 volts.

0.3 is a little too low. anywhere from 0.5 to as high as 1.0 or so is fine for the low end, with 0.5-0.7 as the sweet spot. high end anything about low 4s to 5.0v is fine.