When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
are the worth a I have a tpis thorttle bodies 52mm is the bbk more to spec. this tpis when i cleaned it the idel went up to1200
in p the minimum idlle speed adout 1000 on good timing temp 220 at 6 btdc I have no base idel no vam leak check it white B12 and propane
check egr all good and p/m switch
Are the BBK 52mm thorttle body in spec? On my 85 now is a tpis came
with vett. Cleaned it. NOW idel is high.
Check .
1. vacuum leak with
B12 & propane no leak.
2. Timing 6 BTDC
3. EGR valve & Control Solenoid
4. P/N Switch
5. ICA try a minimun idel speed aujustment to high about 1200
RPM in Park & Drive about 850 nogo.
SO I think my TPIS has gone south.
I do not want to pay $350.00 for A POS!!!!
I have heard good things about Holley TB's. I just ordered a rebuilt unit off of eBay for $180 shipped. Has been bored to 52mm and new bearings inserted for the shaft. If all goes well, I'll be very happy with the price.
Since I'm a first generation immigrant myself, I'm going to translate this into what I think he said since this approach used to help me personally. I'm NOT making fun of your writing but I hope this helps you in the future.
Let me try this again
Is a BBK 52mm throttle body worth the money I would spend on it?
I have a 1985 corvette which came with a TPIS brand throttle body.
After cleaning it, the idle is now higher than it was before.
So far, I've checked the following:.
1. I looked for a vacuum leak using B12 (??) & propane and found no leak.
2. I set the Timing to 6 BTDC
3. I checked the EGR valve & Control Solenoid (how?)
4. I replaced the P/N Switch (that shouldn't affect idle)
5. I reset the idle air control valve (IAC not ICA) and after doing that I ended up with an idle speed that was 1200 RPM in Park & around 850 RPM in gear . this is not good
SO I think my TPIS has gone south.
I do not want to pay $350.00 for A stock throttle body (which is not normally POS)
Jeeze I feel like EFI-CFI but again, this is meant to help so don't get upset.
How did I checked the EGR valve & control solenoid?
With a vacum pump & Helm 85 shop manual.
Chart C-7 page 6E3-121
sorry adout the spelling I know it suck