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Author
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Topic: idle and drivability issue
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slidewayz94
CAFords OG
Member # 3101
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posted
 
 
2000 GT about 1k on new engine with comp cams stage 1 cams.
Engines dies upon deceleration, and at idle most of the time. Occasional RPM surge.
Drivability: Surging while driving 35-65 MPH while at steady throttle or slight throttle.
NO issues at WOT. Runs perfect.
Checked for vacuum leaks and found egr vavle was bad. Replaced it along IAC.
No improvement. No codes either.
Posts: 4251 | From: Sac | Registered: Jul 2003
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LXjames
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Member # 10791
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posted
Sounds like my cammed fox speed density. Is your maf correct or fpr? 2 totally different cars but damn same problem.
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On Point Motorsport prez.
King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
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NEIGHT
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Member # 8741
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posted
quote:
Originally posted by LXjames:
Sounds like my cammed fox speed density. Is your maf correct or fpr? 2 totally different cars but damn same problem.
Your fox idle vid sounded like a stock cam tho.
To op: Don't you need to tune newer cars when you do mods like that?
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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top
Posts: 18535 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008
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LXjames
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Member # 10791
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posted
quote:
Originally posted by NEIGHT:
quote:
Originally posted by LXjames:
Sounds like my cammed fox speed density. Is your maf correct or fpr? 2 totally different cars but damn same problem.
Your fox idle vid sounded like a stock cam tho.
To op: Don't you need to tune newer cars when you do mods like that?
Whatever the case, mine had the same exact issues while it was running on speed density. It sounds like he needs a tune or try another maf sensor. Swap it with a buddy's car see if it cleans up any
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On Point Motorsport prez.
King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
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92_5.0
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Member # 7624
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posted
+1 on getting it tuned, if you haven't yet..I'm sure everything needs to be dialed in.
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Infineon/Sears point? same difference!
11.8 @ 115 mph @ Sac Raceway
411 rwhp 402 trq (old set up)
540 rwhp 517 rwtrq (new set up)
ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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slidewayz94
CAFords OG
Member # 3101
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posted
It was a tuning issue. RPM in Angels Camp did a datalog and made some adjustments before putting it on the hr dyno. Car was running lean.
Posts: 4251 | From: Sac | Registered: Jul 2003
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