D-Jet Conversion not going as planned., Car starts but will not run. |
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D-Jet Conversion not going as planned., Car starts but will not run. |
slapshot |
Oct 18 2024, 03:08 PM
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#1
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Member Group: Members Posts: 109 Joined: 11-June 23 From: Utah Member No.: 27,409 Region Association: Rocky Mountains |
I am converting back to D-Jet and my car will start but dies right after. It will not rev up applying throttle. I have a 1975 914 2.0. It was running great with Weber 40s prior.
The D-Jet system is from a 1974 2.0. All the parts came in visibly good condition. TPS calibrates good, AAV tested good, Thermo sensor good, air intake temp sensor good, and a new cylinder head temp sensor. The only test that I think is failing is the vacuum test on the MPS. It leaks. Video of testing the MPS.. The MPS has also been rebuilt at some point. The original part # has been removed. There's a good chance it is not calibrated for my car. I have all new vacuum hose and fuel pressure is between 28 and 30. I don't have any tools to calibrate the MPS. Should I try turning the inner screw on the MPS to see if it helps? Or should I send it to someone to have it rebuild again and recalibrated? If the later do you have any recommendations on who to send it to? |
emerygt350 |
Oct 25 2024, 06:56 PM
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#2
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Advanced Member Group: Members Posts: 2,485 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
It is a 123 towle, at least I think it is.
I wouldn't put much of anything into driving performance yet. TPS might be it but I doubt it. Just disconnect the TPS entirely and try driving it. It really isn't necessary for most normal driving. The only time I have run into tps issues is at cruise and having a dead spot. That was actually from the new board. Went back to the original and it worked great. The new material just doesn't hold up like the original. You will get a hesitation at tip in without TPS but that's about all unless you are really getting crazy. |
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