rpms dont like to go above 2000
#1
Senior Member
Thread Starter
Join Date: May 2002
Location: Eastpointe, MI
Posts: 745
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2001 Trans Am WS.6, 1985 Trans Am-RIP :,(
Engine: LS1, 305 TPI
Transmission: 4L60E, 700R-4
rpms dont like to go above 2000
I noticed sometimes on acceleration the rpms will stick and bog at 2000rpm, it wont go above, or if it does it will bog down to 2000. Occasionally it will go above 2000 like normally, but sometimes if I nail the throttle while its going normal, it will bog.
When cruising above 2000rpm(highway) it will bog to around 2000 if i add a bit of throttle, as soon as I let off the rpms will go back to normal.
WTF!? I am out of ideas, I am putting in new fuel injectors, i think that is part of the problem. I am also doing a tune up. I did it last year, but I figure with the injectors bein replaced to it couldnt hurt.
I cant get it to do it in neutral. And there is a slight rpm drop when the throttle is first pressed, not all the time though.
Any ideas please help!
Thanks,
Matt
When cruising above 2000rpm(highway) it will bog to around 2000 if i add a bit of throttle, as soon as I let off the rpms will go back to normal.
WTF!? I am out of ideas, I am putting in new fuel injectors, i think that is part of the problem. I am also doing a tune up. I did it last year, but I figure with the injectors bein replaced to it couldnt hurt.
I cant get it to do it in neutral. And there is a slight rpm drop when the throttle is first pressed, not all the time though.
Any ideas please help!
Thanks,
Matt
Last edited by Matto'85TA; 04-26-2004 at 08:23 PM.
#2
Supreme Member
Join Date: Aug 2002
Location: San Pedro, Ca
Posts: 1,413
Likes: 0
Received 0 Likes
on
0 Posts
Car: White KSwisses
Engine: 5.3L Gen III
Well doing a full tuneup, especially check your plug wires and plugs is a good start. U never know, some could be fouled.
It sounds to me like your fuel pump is out the door too.
It sounds to me like your fuel pump is out the door too.
#3
Senior Member
Thread Starter
Join Date: May 2002
Location: Eastpointe, MI
Posts: 745
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2001 Trans Am WS.6, 1985 Trans Am-RIP :,(
Engine: LS1, 305 TPI
Transmission: 4L60E, 700R-4
I hope it isnt the pump. I know the price to replace would be high, and I am not sure I could do it myself. It seems to be a pain. I'm pretty sure the pump runs. I'll check it out though.
#4
Supreme Member
Join Date: Nov 2001
Location: So. California
Posts: 1,160
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: Pro-Built Automatic/Vigilante 2800
I have replaced many fuel pumps myself and very seldom do they start loosing pressure, usually when they go bad they stop pumping completly. Only way to be sure though would be with fuel pressure guage, also most often a lose in pressure is the cause of a clogged filter. Take filter off and try blowing through it, should pass through with little effort. If pump does need replaced it's not a difficult job but is one the requires a lot of work and time. It's a big job no doubt about it, but not one that requires a lot of skill. Just make sure you have all the correct tools. Also how do your air filters look??
#5
Senior Member
Thread Starter
Join Date: May 2002
Location: Eastpointe, MI
Posts: 745
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2001 Trans Am WS.6, 1985 Trans Am-RIP :,(
Engine: LS1, 305 TPI
Transmission: 4L60E, 700R-4
the air filter looks decent, could be replaced, but isnt that bad
#6
Supreme Member
Join Date: Nov 2001
Location: So. California
Posts: 1,160
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: Pro-Built Automatic/Vigilante 2800
reason I ask is because sometimes a filter that's clogged can cause a lack of air and cause the car to bog, but it usually has to be pretty nasty for the car to act like that.
#7
Senior Member
Thread Starter
Join Date: May 2002
Location: Eastpointe, MI
Posts: 745
Likes: 0
Received 0 Likes
on
0 Posts
Car: 2001 Trans Am WS.6, 1985 Trans Am-RIP :,(
Engine: LS1, 305 TPI
Transmission: 4L60E, 700R-4
Hmm, i was thinking yesterday, would a bad MAF do something like this?
Thread
Thread Starter
Forum
Replies
Last Post
challenger71
Interior Parts for Sale
0
09-10-2015 04:58 PM