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.
Map sensor vacuum goes to throttle body? 350 tpi swap
Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Map sensor vacuum goes to throttle body? 350 tpi swap
91 RS was a 305 tbi did a 350 tpi swap from a 88 it is a speed density swap as well , I am trying to sort out some small details it's running on it's own pretty good thought it had a high idle 1500 but I think the tach is off it might actually be more close to normal , anyways sometimes it surges rpms go up on there own and down , getting a code 33 and 42.I did notice the map sensor has a vacuum port on it is this spose to plug into throttle body? Mine is from a 88 maf car I don't see anymore ports to use? Map sensor port
Egr solenoid went to the tb. The map went to one of 3 port on the p/s of the plenum. Looking at it, your plenum looks to only have 2. Originally a maf plenum?
edit, scratch that last question, I just reread your post. Yes, being 88 it was maf, you'll need to add a port to maintain everything the factory has. I had a 89 plenum that I added the port.
the original SD plenum also has more material and a bolt hole to attach the map sensor bracket
Last edited by aliceempire; 12-01-2020 at 04:18 PM.
12-01-2020, 02:58 PM
