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running bad

Old May 27, 2019 | 04:16 PM
  #1  
joe morreale's Avatar
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In the past week I drove to Naples and Deltona. When I got to Naples (2 1/2 hour drive) the car stalled at a light. It was real hard to start. When it started it didn't want to run without flooring it. Anything under 4k rpm it spiked real lean, 16-18 afr. Hardly ran. Let the clutch out with it bucking wildly until I hit 4k rpms. Above 4k all the way to redline it ran ok and afrs we're good. I thought it was a cam sensor, since I had one I put it in, after an hour of cooling. Car ran fine 2 1/2 hour ride home.

A few days later, I went to Deltona. Cooler top down morning. Ran well. On the way home, after about two hours I got caught in a bunch of lights on local highway. When it died at lights I did nothing, but **** people behind me off, and the car would start and drive normally, but only for a while. Back to not starting or running in lower rpms. I kept feathering the throttle and made it home. When at one of the lights I could hear my fuel pump making knocking sounds.

I'm thinking the 18 year old fuel pump might be failing. I thought a failing pump would run out of fuel at higher loads though. I drove it today for about 15 minutes and it ran fine. Afrs were stable. No loss of power. I'm thinking it has to do with the longer drive. Any suggestions out there? Filter has maybe 15k on it. Plugs 3k. Wires maybe 12k. Didn't have the laptop with me to get a log when it was happening.
Old May 29, 2019 | 04:26 PM
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If you have spark, then it's gotta be fuel. When I've had fuel pumps fail on me in the past sometimes they will do fine and once they warm up they start acting up. Replace the pump it's easy along with the filter.
Old May 29, 2019 | 09:44 PM
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Replace fuel pump and fuel filter. See if those help any.
Old May 30, 2019 | 11:35 AM
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Ordering a dw200 tomorrow. When I remove pump will the gasket normally be shot? No dealership near me, so I'd have to order it, if it commonly breaks apart. Pump's never been out since new, 2001. Should I get a new relay as well?
Old May 30, 2019 | 12:19 PM
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Gasket: It is a large, flat, rubber gasket. Mine has been no problem: 1999. Don't worry about that.

Relay: I'm running original relay as well. Interested to see what others say on that subject.
Old May 30, 2019 | 01:15 PM
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Originally Posted by DNMakinson
Gasket: It is a large, flat, rubber gasket. Mine has been no problem: 1999. Don't worry about that.

Relay: I'm running original relay as well.
Agree with both of these.

One thing. I don't know for sure, but the DW200 probably uses a different connector than stock. A stock replacement pump may be all you need, and will be easier to install.
Old May 31, 2019 | 07:16 AM
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Also I would really try to get some datalogs of it happening. Without those it is sort of buying parts and hoping they fix it.
Old May 31, 2019 | 10:19 AM
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Next long trip I go on I'm bringing the laptop. I thought the cam sensor fixed it the first time but now I know different. Ordered new fuel pump, relay, gasket and filter. I figured an old car with turbo demands it's an inevitable thing.
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