1997 lean condition

[VoxVeritatis]

crown: Hope your weather's better than ours (-10 wind chill) or you've got that '97 in a warm garage. Let us know what you discover.

 

[crowncrazy87]

It decided to turn off cold again here yesterday! I'll give it a couple of days to warm back up some since I am working outside lol. Wind chill here this morning was in single digits! High is only supposed to 28 but in this 50s this weekend thankfully!

This vehicle is not our main ride ad we have have a 2002 EB Expy and a 98 F150 as well so it can wait a few days

 

[crowncrazy87]

Started thread in the engine forum for anyone following this! Seems it may be a bigger issue but I hope not!

 

[Killer Ride]

Well I found an exhaust who wasn't going to take me to the cleaners and had him clear out the upstream cat and put in a new Magnaflow downstream one on the passenger side. When I went to pick up the truck I asked him "how bad was it clogged"? He said it was already cleared. I asked if it had all gathered at the second Cat he said it was cleared as well. He said all the material had gathered at the muffler so he cut it off and dumped all the material out of it. Was really bad. Good thing is it has power now and mileage is up 2mpg +.Now just need to do other side

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[Edin]

Hi guys
I’m new here. I have exactly same issue with lean condition and no power no acceleration. Could be a cat’s?

Thx
Ed

 

[Killer Ride]

Yes it absolutely could be. Take it to an exhaust guy have him do a back pressure test. They usually do it for free.

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[Edin]

Yes it absolutely could be. Take it to an exhaust guy have him do a back pressure test. They usually do it for free.

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I would like to if is free. I try to check back pressure but everything is rusty and old I cannot remove my O2 sensors. I think is still OEM. Honestly I updated many things things. I have cat’s and fuel pump. But pressure is ok 32psi 38psi when I remove vacuum from FPR at idle and 40psi when I driving.
And yes I checked IR gun temperature is different 150 and 120 degrees back of cat’s are colder

 

[Killer Ride]

Fuel pressure is right on the money, so rule that out. When I had mine done passenger side was the worst of the two. When he took it apart both Cats had broken apart and all the debris had gone to the muffler and clogged IT completely.

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[Edin]

What do you think about fuel injectors?

 

[Killer Ride]

Did you check the cats?

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