Blacktop Posted April 21, 2019 Share Posted April 21, 2019 Hi all, My ‘84 351w has a serious lack of power. It struggles to reach 65mph on a flat stretch of road and doesn’t want to rev. The slightest of inclines and I need to drop it down a gear. Could it be in limp mode? And if it is, how would I know? There’s no check engine light on. It’s a two barrel carb with computer control. Thanks for any info, Alan. Link to comment Share on other sites More sharing options...
BullnoseHunter02 Posted April 21, 2019 Share Posted April 21, 2019 Only 2 things that come to my mind are the injectors and the fuel pump. Its a carburated engine so i dont think its gonna have injectors on it. Plz correct me if i am wrong though. Im bettng its probibly an issue with your fuel pump. Link to comment Share on other sites More sharing options...
Blacktop Posted April 21, 2019 Author Share Posted April 21, 2019 Only 2 things that come to my mind are the injectors and the fuel pump. Its a carburated engine so i dont think its gonna have injectors on it. Plz correct me if i am wrong though. Im bettng its probibly an issue with your fuel pump. Thanks for the reply👍 I have a new fuel pump ready to go on. Also have a 4 barrel Holley and intake ready too but would prefer to fit that later when I junk all the smog, ignition and computer too. Alan Link to comment Share on other sites More sharing options...
Gary Lewis Posted April 21, 2019 Share Posted April 21, 2019 You said it is a computer-controlled 2bbl, and those can easily go into limp-home mode if the computer detects something it doesn't like. The way to know is to pull the codes. The EEC-IV Testing page explains how to do that: Electrical/EEC-IV Testing. But if that doesn't make sense let me know. Link to comment Share on other sites More sharing options...
Blacktop Posted April 21, 2019 Author Share Posted April 21, 2019 You said it is a computer-controlled 2bbl, and those can easily go into limp-home mode if the computer detects something it doesn't like. The way to know is to pull the codes. The EEC-IV Testing page explains how to do that: Electrical/EEC-IV Testing. But if that doesn't make sense let me know. Thanks Gary, I’ll check it out 👍😊 Link to comment Share on other sites More sharing options...
Ray Cecil Posted April 21, 2019 Share Posted April 21, 2019 Thanks Gary, I’ll check it out 👍😊 I thought the title of this thread was Pimp Mode, to which I thought Id offer my advice. Seeing that its Limp Mode, and I don't have ED issues yet, I still can't offer advice. Link to comment Share on other sites More sharing options...
Blacktop Posted April 21, 2019 Author Share Posted April 21, 2019 I thought the title of this thread was Pimp Mode, to which I thought Id offer my advice. Seeing that its Limp Mode, and I don't have ED issues yet, I still can't offer advice. 😂😂😂 Link to comment Share on other sites More sharing options...
Blacktop Posted April 22, 2019 Author Share Posted April 22, 2019 😂😂😂 Ive just ordered a digital obd 1 reader from ebay. The computer and carb will be going eventually but hopefully I can get it sorted for now👍 Link to comment Share on other sites More sharing options...
vjsimone Posted April 22, 2019 Share Posted April 22, 2019 Ive just ordered a digital obd 1 reader from ebay. The computer and carb will be going eventually but hopefully I can get it sorted for now👍 No Engine Check Light until about 1988 on Trucks.... Link to comment Share on other sites More sharing options...
Ray Cecil Posted April 22, 2019 Share Posted April 22, 2019 No Engine Check Light until about 1988 on Trucks.... I would have sworn my 86 efi 302 has a CEL or SES light. Link to comment Share on other sites More sharing options...
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