problem with my 1975 2.0 d-jet running fine then died, it was running great and then... |
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problem with my 1975 2.0 d-jet running fine then died, it was running great and then... |
buck toenges |
Jun 30 2022, 06:09 PM
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#21
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Senior Member Group: Members Posts: 553 Joined: 25-November 03 From: Fort wayne In Member No.: 1,388 Region Association: None |
I have a 75 2.0 d-jet. i turn the key about 4 times to get the fuel pump sending gas to the engine. Starts right up. it idles a little low to begin with but then idles about 1000 rpm after 5min. So I decided to take a drive. running great down the highway no issues what so ever. After about 25 miles up the road engine dies. Battery is fine and the starter works well, not a battery issue. I can't restart it. Had to have it towed back home. Let engine cool down but still won't start. Fuel pump engages but no start. Shot some starting fluid in throttle body but again no start.
I know my fuel injection harness is not the best but it wasn't good before today. Looking on line I think it might be a cht sensor issue. Saw this online https://www.youtube.com/watch?v=fbmanDTIun8 They tested the cht to ecu and found out it was a bad cht. Once they changed it their car fired right up. I haven't checked the fuel pressure, I haven't checked the injectors, I did check spark and I have it on the sparkplugs. I shot some starting fluid in the spark plug hole and no start. Any ideas? It is funny that it was running great and then died. Buck |
buck toenges |
Jul 8 2022, 08:10 AM
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#22
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Senior Member Group: Members Posts: 553 Joined: 25-November 03 From: Fort wayne In Member No.: 1,388 Region Association: None |
Trying to figure out why my cht went bad. What causes a cht to go bad? Could it be cracked wires from my F.I. harness caused a short? Is it something to do with heat from the cylinder head causing a cht to die. Curious minds want to know.
Thanks, Buck |
brant |
Jul 8 2022, 09:03 AM
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#23
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914 Wizard Group: Members Posts: 11,640 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Trying to figure out why my cht went bad. What causes a cht to go bad? Could it be cracked wires from my F.I. harness caused a short? Is it something to do with heat from the cylinder head causing a cht to die. Curious minds want to know. Thanks, Buck they wear out... I assume most failures are an internal short they are old... everything eventually wears out. they carry a ground signal modified with heat controlled resistance. they don't carry positive power... only ground. not likely to "short" out or be impacted by the wiring harness the failure is internal to the unit.... if there is not continuity to both ends. too many heat and service cycles would be my guess as mentioned by others... a failed CHT causes an extremely rich condition and a no start condition. it does not cause a lean condition... I suppose it might be possible to fail with high resistance... but I've never heard of that happening. They loose continuity, causing the ECU to go extremely rich. you should have "wet" plugs that would like to be cleaned off |
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