blakes
Red Skull Member
Edit after much troubleshooting. Root Cause: Out of fuel. See last post as to why I didn't think of this.
I also want to point out that a 98 is chevy vortect 454 DOES NOT show RPM on the tach while cranking. I thought it did and it lead me down the wrong path of troubleshooting.
Original post below:
I think I'm having a bad run of luck. First my rig, 78 J10 with HEI has (I think) a bad pickup coil. New one going in tomorrow.
Now my 98 GM 1 ton with vortec. The thing only has 65k miles and used to run well. I recently replaced the FPR which involves taking off the intake plenum. Also replaced the cap/rotor with Napa parts. That went well and it started right up and ran perfect. I drove it around the property and plowed some snow. Twice. Drove it for maybe an hour total since replacing the FPR and cap/rotor.
Yesterday it was running perfect and I was plowing snow. Today it cranks over fine, but the stock tach shows nothing while cranking. I connected HP tuner and scanned it while cranking and don't see any evidence of spark. Although I'm not sure I should or not...
So I bought a new Napa 'premium' echlen ignition module. First time I cranked it over, the tach DID show RPM while cranking, but it didn't start. Further start attempts the tach didn't move.
What does the IBB think is going on here?
Edit - HP tuner allows you to manually turn on/off the fuel pump and I can hear that, so I don't think it's a fuel pump problem. Also, spraying starter fluid did nothing.
I also want to point out that a 98 is chevy vortect 454 DOES NOT show RPM on the tach while cranking. I thought it did and it lead me down the wrong path of troubleshooting.
Original post below:
I think I'm having a bad run of luck. First my rig, 78 J10 with HEI has (I think) a bad pickup coil. New one going in tomorrow.
Now my 98 GM 1 ton with vortec. The thing only has 65k miles and used to run well. I recently replaced the FPR which involves taking off the intake plenum. Also replaced the cap/rotor with Napa parts. That went well and it started right up and ran perfect. I drove it around the property and plowed some snow. Twice. Drove it for maybe an hour total since replacing the FPR and cap/rotor.
Yesterday it was running perfect and I was plowing snow. Today it cranks over fine, but the stock tach shows nothing while cranking. I connected HP tuner and scanned it while cranking and don't see any evidence of spark. Although I'm not sure I should or not...
So I bought a new Napa 'premium' echlen ignition module. First time I cranked it over, the tach DID show RPM while cranking, but it didn't start. Further start attempts the tach didn't move.
What does the IBB think is going on here?
Edit - HP tuner allows you to manually turn on/off the fuel pump and I can hear that, so I don't think it's a fuel pump problem. Also, spraying starter fluid did nothing.
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