fuil problums

20

Asked by Feb 08, 2013 at 04:09 PM about the 1998 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

Question type: General

i have a 98 ram 1500 4wd ,it jumped time so i put in a new timing chain.now when i try to start.it wont start unles i remove the fuil pump relay.while its running if i reinstall the relay it dies as if its flooeding itself out.
please help. i really need this truck and dont have alot of money ..

9 Answers

21,495

it may well be! ya sure the timing is not off 1 tooth on something?

20

Its definitely not off. I did the chain like 8 times because I was thinking the same.

21,495

dodge is good for trouble with their air valve that raises the r,p,m IAC emits air like pulling a vac. line, till warmup ,sticking closed the pcm gives rich fuel at startup as a choke used to do,and with no rpm rise it will stumble,insert relay,hold peddel to floor as this wide open position cuts fuel off during cranking for a flooded condition,see if can be jogged to some warmup,and maby it will hold a nomal run,

1 of 1 people found this helpful.
20

I already put in a new iac. With no avail

13,265

A couple questions for you... The relay you are pulling are you sure its the fuel pump relay? When you replaced the chain did you look if it had jumped? How long does the engine run after you pull the relay? How well does it run with the relay out? Does it smell like it's burning rich while it runs with or without relay? Does it backfire at all? Have you checked fuel pressure at the rail? Not trying to insult your intelligence here just need more info to help you out.

20

Yes it is definitely the fuel pump relay.at least that what it says on thecover,with out relay it runs perfectly, when it jumped time it jumped two teeth going by the marks on the gears.however reading the book it says the computer is sopposed to take over and reset the timing.

20

Also the motor runs long enough to use up the 50 psi of pressure in the line and that's it. If just before it dies I plug the relay back in for a quick sec it will continue to run

13,265

did you replace the whole fuel pump module or just the pump itself?

13,265

Also do a dynamic fuel pressure test. Watch pressure as you plug and unplug the relay. Your pump should not run at all without the relay.

1 of 1 people found this helpful.

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