87 325e dies on acceleration when warm

M20/M30/M50/Whatever! All engine related stuff here.
User avatar
Yoshi
Site Admin
Posts: 9093
Joined: Thu Feb 26, 2009 7:47 pm
AntiSpam: No
Location: North VA
Contact:

Re: 87 325e dies on acceleration when warm

Postby Yoshi » Thu Nov 08, 2018 6:19 pm

Glad to hear it was that simple. Sometimes the wiring is a bit fubar so make sure things are solid on the connectors.
Image
Status: HG repair. 488wtq though!
Bmwforbossmanswhip
n00b
Posts: 10
Joined: Fri Oct 26, 2018 4:15 pm
AntiSpam: No

Re: 87 325e dies on acceleration when warm

Postby Bmwforbossmanswhip » Sat Nov 10, 2018 8:53 am

Well new fuel pump did jack squat still giving me the same problem only thing new fuel pump did was be a little quieter under acceleration no more “woosh” sound everytime it cut out and you’d give it gas to much bmw projects at one point only one I want working lol
User avatar
M20_fever
Größter Vorsitzender
Posts: 11029
Joined: Fri Feb 27, 2009 1:28 pm
AntiSpam: No
Location: Northern IL

Re: 87 325e dies on acceleration when warm

Postby M20_fever » Wed Nov 14, 2018 6:23 pm

Have you pulled the vacuum line off the FPR to see if it's bad? If fuel pressure is dropping to zero like that the pumps ('87 had dual pumps IIRC) are losing power. Check the relays, trace the wiring from the tank to the fuse box looking for chaffed wires grounding out.
Image
Midwestern Councel C Prepared class champion 2012
North Suburban Sports Car Club C Prepared class champion 2012
HSAX Instructor

GET YOUR E3P GEAR HERE: http://www.cafepress.com/e3pgearshop
Bmwforbossmanswhip
n00b
Posts: 10
Joined: Fri Oct 26, 2018 4:15 pm
AntiSpam: No

Re: 87 325e dies on acceleration when warm

Postby Bmwforbossmanswhip » Fri Nov 16, 2018 7:07 pm

Never pulled the vacuum line honestly but my first approach was the wiring and everything checked out then I just replaced to relays just cause I had so much new ones laying around I’ll pull the vacuum line as soon as the snow melts a little
User avatar
Yoshi
Site Admin
Posts: 9093
Joined: Thu Feb 26, 2009 7:47 pm
AntiSpam: No
Location: North VA
Contact:

Re: 87 325e dies on acceleration when warm

Postby Yoshi » Sat Nov 17, 2018 10:30 pm

Fuel pressure regulator is my next guess. But when you pull 0psi, see what the power going to the pump is. You could have an issue with your wiring.
Image
Status: HG repair. 488wtq though!
Bmwforbossmanswhip
n00b
Posts: 10
Joined: Fri Oct 26, 2018 4:15 pm
AntiSpam: No

Re: 87 325e dies on acceleration when warm

Postby Bmwforbossmanswhip » Mon Nov 19, 2018 12:51 am

So I went to go pull the fpr line and noticed a relay kept clicking I looked it up and it was fuel pump relay I went back to the fuel pump to check for wiring issues everything was good so I did some reasesrch and in people pics of their fuel pump they had two wires on the pump so I thought it only takes 5 min to pull the pump I pulled it and no ground wire in the pump just the power don’t know how I didn’t realize it when swapping the pumps but I soldered a new ground to the empty prong on my new pump put it back together took it for a ride and boom all 120 325e horses unleashed onto New Jersey public roads thank you guys for helping me out on this never thought to even change my fuel pump before this think when a fuel pump is done it’s done now it’s time to focus on the valves ticking and paint
User avatar
M20_fever
Größter Vorsitzender
Posts: 11029
Joined: Fri Feb 27, 2009 1:28 pm
AntiSpam: No
Location: Northern IL

Re: 87 325e dies on acceleration when warm

Postby M20_fever » Mon Nov 19, 2018 9:46 pm

It's an M20, if the valves don't tick something is wrong. Glad you got the fueling issue resolved.
Image
Midwestern Councel C Prepared class champion 2012
North Suburban Sports Car Club C Prepared class champion 2012
HSAX Instructor

GET YOUR E3P GEAR HERE: http://www.cafepress.com/e3pgearshop
User avatar
Yoshi
Site Admin
Posts: 9093
Joined: Thu Feb 26, 2009 7:47 pm
AntiSpam: No
Location: North VA
Contact:

Re: 87 325e dies on acceleration when warm

Postby Yoshi » Tue Nov 27, 2018 7:41 pm

Yea getting an M20 to not tick is like keeping kids away from ice cream. It's gonna happen whether you want it to or not.
Image
Status: HG repair. 488wtq though!

Return to “Engine”

Who is online

Users browsing this forum: No registered users and 4 guests