Follow-Up to: She's Just Getting Old

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Posted by Marty (68.5.40.201) on 00:46:54 07/28/08

Finally replaced the fuel pump today (after how many weeks of honey-do's ??). Managed to wrangle the tank back in by myself. I think I had around 6 gallons. The floor jack helped keep it in position; until I realized that I didn't put the plastic shield on first. Then I cut a few dowels to hold the corners of the tank so I could pull the jack out and slip the shield up.

Anyway, the engine still sputters and cuts out when in gear and accelerating. As noted before, it idles fine. Maybe I'll cut off the cat.

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Original thread start from previous board:

My '94 Sub is parked right now. Was running fine last week; even drove a little 'sporty' on the way home. Parked it in the drive, and it nearly did not start the next morning. I made it over to drop my son at school, and it started sputtering. I limped it home and parked it in the drive.
Going through the FSM, I was leaning toward the fuel pressure regulator. So, I changed the filter and ordered the regulator. The filter change had no positive effect. The regulator added some fuel, but it still surges, and sometimes pings.
I pulled a vacuum on the EGR, and it held. When the engine was started, the vacuum went to '0'. The timing looked to be 10° advanced. So, I pulled the wire and set the timing to stock. Still chugged and hesitated on acceleration.
I even checked the intake vacuum to see if there was a drop when the engine was rev'd. Just to check to see if the cat was clogging.
At idle, it runs fine. Sometimes a light hard start.
Still looking for the cure.

Follow Ups:

Re: Follow-Up to: She's Just Getting Old - gblotter 23:46:30 07/29/08 (3)
- Well, it is not the cat - Marty 14:22:33 07/30/08 (2)
  - Checked the TPS - Marty 17:19:44 07/30/08 (1)
    - Re: Checked the TPS - Ben 10:02:49 07/31/08 (0)

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Comments:	: Finally replaced the fuel pump today (after how many weeks of honey-do's ??). Managed to wrangle the tank back in by myself. I think I had around 6 gallons. The floor jack helped keep it in position; until I realized that I didn't put the plastic shield on first. Then I cut a few dowels to hold the corners of the tank so I could pull the jack out and slip the shield up. : : Anyway, the engine still sputters and cuts out when in gear and accelerating. As noted before, it idles fine. Maybe I'll cut off the cat. : : ------------------------ : : Original thread start from previous board: : : My '94 Sub is parked right now. Was running fine last week; even drove a little 'sporty' on the way home. Parked it in the drive, and it nearly did not start the next morning. I made it over to drop my son at school, and it started sputtering. I limped it home and parked it in the drive. : Going through the FSM, I was leaning toward the fuel pressure regulator. So, I changed the filter and ordered the regulator. The filter change had no positive effect. The regulator added some fuel, but it still surges, and sometimes pings. : I pulled a vacuum on the EGR, and it held. When the engine was started, the vacuum went to '0'. The timing looked to be 10° advanced. So, I pulled the wire and set the timing to stock. Still chugged and hesitated on acceleration. : I even checked the intake vacuum to see if there was a drop when the engine was rev'd. Just to check to see if the cat was clogging. : At idle, it runs fine. Sometimes a light hard start. : Still looking for the cure. :
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